Anybody Using One. I Have Heard Good Things About It And Would Like Some Advice. Also Heard Good Things About The Edge But I Like The Idea That If I Need To Go To The Dealer I Can Bring It Back To Stock Real Easy With The Hypertech.

2005

If u don't install the probe on juice it's less than a minute to get it ready for a trip to dealer.
Takes longer to reinstall the stock program w/ the predator.

Hypertech takes less than 5 minutes to return to stock.

I run the hypertech and like it for what it can do . It came with my truck and I haven't seen the need to upgrade. My nieghbor has the same truck as I but he has the edge with attitude. There is noticable difference in power between the two trucks. His is faster! If you go the edge way be prepared to shell out some cash for tranny mods. Once you get the tasste for power there is no turning back.

Boyd

I have been running Hypertech for almost 8 months now and I like it. I did have the Edge and did enjoy the power but I wasn preparing to tear apart a brand new tranny just for my greed for more power. It has enough as it is. I would love more but I must settle for the way it is. It is NOT underpowered in any way. Hypertech on level 3, to me has better low end torque than Edge on level 3, which is far as you can go with a stock tranny. You wont be dissapointed.

HOW DOES THE HYPERTECH COMPARE TO THE PREDATOR? ANY LONGTERM EFFECTS OF USING EITHER OF THESE IF USED RIGHT. FOR EXAMPLE NOT TOWING ON LEVEL 3 WITH THE HYPERTECH? OH, YOU GUYS ARE FRIGGIN GREAT. WHERE ELSE COULD SOMEONE GO TO GET ALL THIS VALUABLE INFO. SORRY, HAD TO VENT BUT THIS FORUM IS :cool2:

THANK GOD I'M A CONVERT FROM FORD! Found.On.Road.Dead-:t

My truck didn't like the Hypertech. The dealer installed it & lost communication when trying to load the Hypertech programming back into the truck. They had to download the factory program from GM onto a Tech II to get it back. If you're dealer's cool with it, no problem. Trying to explain to them how your programming disappeared & you weren't trying to load a tune might be a little wierd. The harness type boxes just plug & unplug. Just my experience.

HOW DOES THE HYPERTECH COMPARE TO THE PREDATOR? ANY LONGTERM EFFECTS OF USING EITHER OF THESE IF USED RIGHT. FOR EXAMPLE NOT TOWING ON LEVEL 3 WITH THE HYPERTECH? OH, YOU GUYS ARE FRIGGIN GREAT. WHERE ELSE COULD SOMEONE GO TO GET ALL THIS VALUABLE INFO. SORRY, HAD TO VENT BUT THIS FORUM IS :cool2:

THANK GOD I'M A CONVERT FROM FORD! Found.On.Road.Dead-:t

Predator is hotter EGT and has more power like the juice, which will limp your alli.

The juice is nice since u can change power on the fly.

The EZ juice or what ever it's called has the same first 3 power levels from regular juice and doesn't need a pyro or attitude.

Hey You guys forgot Bully-Dog Pup how are they doing any problems?

I got the Hypertech III and like it so far. I am getting about 15-16 mph on level 3 with plenty of power. I installed my guages and even though they say it is safe to tow on level 3, I would be a little wary. Just around town in flat terrain and no load, I am hitting 1300-1400 EGT when stomping on it. Also, FWIW I was hitting about 25 psi boost when it spiked up, but mostly around 22-23 before it shifts.

Out!

AXE, Have you tried towing on level II? I am getting ready to take a trip this weekend with my fifth wheel that weighs about 10,500 lbs and currently have mine set on II. Can anybody comment if this is safe?

I have a couple of friends back in North Dakota that tow their 5th wheels with the Hypertech on level 3 and I don't think they run guages. However, the temperatures are cooler and the terrain is relatively flat, so they aren't at as much risk.

If I were you, until you got some guages I would back it down to level 2 just to be safe. I would imagine that you will only be able to run so fast with your 5er behind you anyway and you will still have plenty of power on level 2.

Out!

Axe, what kind of temps are you running on flat terrain at about 75-80 mph? Also, have you towed much with it on level 3? How much hotter would a 6000lb trailer make it?

Cruising at around 75 mph I am running around 800 degrees, but this morning when I had the hammer down on the interstare running around 90-95 for a few miles, I was sustained around 1000 and for a while was pretty steady at 1200 degrees.

I haven't pulled since I got the guages in. I have a boat that sits about 3500lbs and it didn't seem to stress much over about 10 miles of flat terrain. This weekend I will be pulling a 2000 lb trailer with camping and fishing gear up some 6% grades around 65 mph, so I will know a little more.

Later this fall, I will be pulling a 7000lb trailer, so I will know the stats better then.

Out!

I am just interested to see what kind of temps you were seeing because I pulled a trailer one day on a short (150 mile) trip. I expected to only be towing about 3000lbs but ended up having to pick up something else that bumped me to 6000-7000lbs, and I had my Hypertech on level 3 and have no guages.

Well, I did my trip this past weekend running on Level 3 and was surprised at how the EGTs spike up dramatically when trying to maintain speed up grades.

Like I said, I probably was pulling 2000lbs give or take and on grades of 4-6%, I had to slow down to 50-55 mph to keep the EGTs from hitting 1400. I was hoping to be able to run about 65 mph, but it would hit 1400 almost immediately into the hill. Even on some smaller hills, it would tend to creep up over 1300. On flatter terrain, I could run 75 mph with EGTs around 1000. Just so you know, the tranny never seemed to run over 200, so that was not a problem and I wasn't getting much shifting.

In my opinion, it is not safe to pull much weight up grades on Level 3. I think pulling 6000-7000 lbs would be too much at any speeds of significance. If you are going to pull anymore, I would probably drop it to Level 2 and call it good.

I would stick in some guages if you can, that way you really know where you stand.

Out!

Huh, well that is not good news.

One thing, though, was that I was running the stock 245's at the time, whereas you have a much larger tire. Don't you think that would make a big difference?

I was running on the interstate, so it was basically flat (pretty flat in west Tennessee). No real grades to speak of, just your normal short rolling hills every once in a while. Just maybe increase your rpms by a few hundered or so and you maintain your speed. Nothing you had to really get into the throttle for.

On your small hills like that, if you were running 75 mph and came upon a short hill did you have to back off? Like I said, these are something that most people would not call hills. Nothing that the trans would even consider downshifting on just to maintain speed.

Yeah, the bigger tires changed my effective gear ratio to about 3.10. That will make the engine work harder when pulling grades, and it won't work as hard on flatter terrain in theory. When I was hitting the rolling hills or small grades around 70-75 mph, I did not really have to back off the throttle and the EGTs seemed to stay in check around 1000-1100.

I still think with the weight you are pulling and the wind resistance, that you are going to be working the motor hard on Level 3. I think you should install the guages or at least back it down to Level 2. I have come to the conclusion that Level 3 is only fun when you get to stomp on the throttle and that doesn't work when pulling a load anyway.

I also think you will get better fuel economy. I was only getting around 12 mpg. Trying to maintain those speeds up grades I am sure didn't help.

Out!

Regarding wind resistance, the good thing was this trailer was a regular flatbed trailer with some short equipment on it, not some big flat-front RV trailer.

Two more questions, a 4-6% grade is a pretty steep grade, isn't it? How long were the grades you were on?

Also, where were you? Was it at a high altitude? (We are at a pretty low altitude down here in West TN). I have heard that makes quite a difference with EGT numbers, right?

Oh yeah, trust me, I am NOT towing any more with the Level 3 program installed. I only tow with the stock program now. I would have removed it for that tow but I did not think the LLYs got that hot that easily.

My reason for all of these questions is I am concerned about any possible damage I did during that one time tow on level three and I am trying to determine based on your experiences whether I could have potentially caused any damage. Just trying to guesstimate what kind of temps my truck was seeing. Thanks for your help, btw.

The 4-6% grades are pretty typical of several sections of road heading north out of the Phoenix area. It can be a combination of several hundred feet to a few miles of road at a time that you are pulling those grades. Elevations on my trip ranged from around 1000 here in Phoenix to over 8000 in the White Mountains, so that change can definitely affect EGTs. However, it didn't seem to matter much, as I would see the high EGTs when pulling grades at any elevation.

Personally, I would not worry about any damage to your truck. If it was a problem you would know it by now. Like I said, my buddy in ND said he pulls his 5th wheel on Level 3 and I know he has over 25K on his and it hasn't seemed to affect anything yet.

I think the key thing was that the tranny was not shifting much at all and the temp of the tranny never seemed to move from around 190-200. I would think that would be more of any issue than having some spikes in the EGT here and there.

Out!

Anybody Using One. I Have Heard Good Things About It And Would Like Some Advice. Also Heard Good Things About The Edge But I Like The Idea That If I Need To Go To The Dealer I Can Bring It Back To Stock Real Easy With The Hypertech.

2005
I have been running a hypertech 3. It works well in the 40hp range. Second range realy produces hp, a big jump, but the unit seems to smoke more than I like. Iam also running 285s. Take about 5min to install .
good luck.):h

I'm running one in stage 2 and it runs great ! I ran it in stage 3 for a day or two and loved the extra power.......but the tranny was shifting wierd ! Anyone know if this smooths out after driving it a few weeks ???

The tranny has to "relearn" its shifting patterns after the installation of any program, that is why it is so abrupt. It took about 100 miles for mine to relearn with the Hypertech on level 3. It shifted firm, but not abrupt after relearning. I just switched over to level 2 and it definitely shifts smoother and still has some nice power gains.

Out!

Hey You guys forgot Bully-Dog Pup how are they doing any problems? had it sold it ,left me hanging two hours from home twice. dont bother

I pulled my fifth wheel with a quad trailer behind it about two weeks ago on level two. Total weight is around 10500-11000 pounds. I was able to maintain my speed on most of the big hills. I did notice the motor got upto about 230-240 on the long hills and the tranny got to 220. I don't have gauges yet, so I don't know what the egt's were. I did manage to get 12 miles per gallon on the trip. I got 16 coming home empty. David

That is pretty good mileage pulling that much weight. When I was pulling around 2000 lbs. I only got about 11-12 mpg on my way to the White Mountains running on level 3 trying to maintain speeds anywhere from 55-75 mph. I just switched to level 2 and have spent about 1/2 tank and I am over 200 miles primarily around town (local roads and freeway commuting), so I am estimating that I am going to be getting closer to 17-18 mpg on level 2 vs. 15-16 mpg on level 3.

By the way EGTs were high on Level 3 overall and are reading about 125 degrees less on average with level 2.

Out!

Anyone run level 1? I also went from 3 down to 2 and did get better gas milage. Still trying to find a place(reputable) here in Phoenix to do the install for me. Any help would be great.

Axe, That pull to the White Mountains is pretty hard compared to Flagstaff. You barely get anytime to rest between hills. I kept my speed at about 63-65mph. This speed keeps my rpm's under 2000, which I think helps with the mileage. One thing I have noticed is the truck is getting better mileage in town since I made that pull. I am switching to the toyo open country 325x65x18 next week, so I will see if this affects my mileage at all.
Axe, How do you like your gauge set-up so far?

My current tires and wheels have less than 1000 miles if anybody is interested in them. David

I like the guages in the double a-pillar pod pretty well. My only complaint is that the top of the guage pod does not seat fully against the a-pillar. I am going to put some double sided tape on to cure that. The color matches pretty well too. I would use the primer and I think you will get a more even color with less paint.

I can help you install the guages if you want. I am not a professional mechanic, but I have wrenched on enought things to make it work.

Those tires are essentially the same as the Nittos I am running. I like them so far. I also liked the BFG ATs that I have always ran before. They are a great tire and I always got 50K plus on them. I hope I get at least 40K with the Nittos. Most everyone else doesn't seem to think that is going to happen.

Out!

Well, I finally got a full tank through running on level 2. Mileage included daily commuting about 60/40 freeway/local streets respectively. Unfortunately, I still only logged about 15+ mpg, so for me there seems to be little difference from level 3 to level 2 in terms of mpg.

I still only have about 5000 miles on the truck, but I am a little dissapointed in the mileage. I guess I can blame it on my tastes (i.e, lift and large tires).

I will probably run another tank through on level 2 and if no increase, I am going back to level 3 and will be stomping on the throttle, pouring black smoke, burning rubber, and wasting $3 dollar fuel. :ro)

Out!

I bumped mine back up to level 3 and put a new exhaust on !! Power is great and shifting has improved dramatically(guess it relearned since the first time I ran it on 3) !!
No problems so far and milage is about 15-16 mpg around town..........got 21-22 mpg running 80 mph on the hwy this weekend (which I thought was awesome) !!

I've taken a lot of flak for my outgoing expression of dislike for the Hypertech, but I seriously cannot see how anybody who has tried anything else can like it. I dyno tested the same way that I test every other module or tuner and it produces some of the most horrific curves that I have ever seen AND less boost than stock. I just verified this again today on a 2004 LLY and while the results were slightly better than my truck, they were very similar.

I'm sorry, and it may offend some people but it's the truth...

I am not offended.........but I am curious ! I just got this truck and it's the first tuner I have tried !! It's a lot faster and no problems ..........I don't know enough to know what's better than that !

What's better and safe on a stock trans. /and will recalibrate for tire sizes ?

I don't necessarily disagree with your testing. I have spent a fair amount of time on dynos with my quads and bikes, so I know the value of the information recieved.

However, the Hypertech has shown definite power gains and good performance by my "seat of the pants" dyno. After installing the lift and larger tires my performance was definitely compromised and the Hypertech brought it back and then some on both level 2 and certainly on leve 3. As for using another product, why would I bother since the Hypertech has done what I expected it to do (more performance and corrected my speedo).

I am dissapointed in my overall mileage so far around 15 mpg with my typical daily use and I wasn't happy that the Hypertech needed to be sent in to get the latest Cal for my 05. However, I can tell you for $330 dollars, there isn't a clearly better product price vs. performance.

Anyway, bottom line IMHO is if you took my truck with the Hypertech and the exact same truck with say a Predator and ran them side by side, towed them, commuted with them, and alternated trucks day after day - the same driver would be hard pressed to tell you meaningful "real world differences".

All products have pros and cons - make your own selection armed with some facts and generally you will get what your after!

Out!

Anybody on here have quarter mile times for Hypertech programmed trucks ? Haven't seen much on times for one of these !

I agree, and will point out that this dyno test is only one aspect (WOT) of a tuner's capability, but the other tuners respond well. The Hypertech also DECREASES factory boost...

Kennedy - if it decreases the boost it for sure decreases the HP - I think. I'm all for facts and data. How much. One thing I've noticed with the HP on 2 or 3 it seems to fall flat once it goes onto 3 & 4th gear. Is this consistant with your finding on the dyno?

I agree, and will point out that this dyno test is only one aspect (WOT) of a tuner's capability, but the other tuners respond well. The Hypertech also DECREASES factory boost...

Can you describe the issue with DECREASED BOOST? What problems does it cause and how much of an impact does it make (in general terms).

Thanks.

I am not sure where the decrease in boost is showing at WOT either. When I stomp mine down, I am hitting as high as 27 PSI. It doesn't stay there long once it shifts, but I think they are still hitting as high as any other tuner.

Again, I can tell you that different dynos produce different results. So I would be interested in seeing some other results from others. I know Hypertech doesn't show the issues you see, but that wouldn't be a good marketing plan, now would it?

Anyway, Hypertech is a good product for the money. It could be better, but then again Edge could have a speedo correction and Predator could have the ability to switch settings on the fly for several hundred more $$$.

Out!

Hey Axe.

I also live in phx and love to head to Big lake for some trout fishing. I pull a 30' toy hauler wieghing in around 9000pnds. I also use the hypertech 3. The last time I pulled my trailer I went up through the Saltriver canyon and I was running stock. I would easyly hit 1400-1500 on my egt gauge. I only got 6.7mpg and the truck strugled to maintain 60mph. On the way home I came down through payson and had the hypertech on level 1.I didn't see much of a difference in egt. I will be heading up again over the holiday and will have it programed on level 2. I will let you know what happens. In town I have on level 3 all the time and I only get the same mpg that you are . My truck is a 04 lly dually 4by4 crew cab.

Boyd

I agree, and will point out that this dyno test is only one aspect (WOT) of a tuner's capability, but the other tuners respond well. The Hypertech also DECREASES factory boost...


on all levels or just level 1?

Boost:

Cool, thanks. I assume the broken line is boost and the solid line is egt? It is kinda hard to see on my computer even when enlarged.

So it looks like it was lower in every level.

I had a post generated and who knows where it went, but suffice to say: For those complaining about Diablo's high EGT's (V2..0 65HP tune for example) should try and compare it to the Edge level 1 which has similar power and more EGT, and Hypertech level 3, which has less power and more EGT. Ever wonder why some mfrs say tow safe in all levels?

Kennedy, Do you have horsepower and torque curves for the Hypertech also ?

Also do you have charts that could be compared for all 3 you just mentioned ?

I have some of the plots on my site under Gallery/Superflow Chassis dyno.

Thanks Kennedy........that was very informative !!

Been using hypertech for almost two years. Excellent product without having to do major tranny upgrades.

Kennedy,

Thanks for the info. How big a deal is 2psi in boost? With the extra HP it is probably worth it. At worst it seems that stock would have 2-3 psi higher boost? Is that true?:help2:

Can anyone tell me what type of power programmer has the manual adjustment capability? What I mean by this is; HP changes can be made as you drive.

Kennedy,

Just curious as to why you run the LLY tests with the Hypertech and no exhaust, but it seems like many of the other brands tested get run with an exhaust. I suppose this is because they are not your trucks, but that perhaps would seem to cure some of the issues with power and EGTs.

As for boost, that curve is not what I see when I drop the hammer and roll on. My boost shoots higher from the get go. I think the reality of what you feel and what the dyno says you should feel are two different things.

Boyd, it sounds like we have similar stories with our trucks. I agree with you pulling that weight up those grades is probably best done on stock or level 1 settings. Are you running an intake and exhaust?

Out!

I have a AFE intake and cat back Banks exuast. I also have ATS triplelock converter with co-pilote.I;m about to do the stack sealing and hope for the best.


Boyd

The 04.5 as well as my truck had upgraded exhaust when running the Hypertech. Intakes were stock.

Axe,

Do you have a lot of stock in Hypertech or something? I see a few posts from you in recent threads where you really bash Diablo and push Hypertech. What is this crap about Diablo not knowing what they are doing and going bankrupt??? What a load.

Diablo must be doing something right because they are an awful lot of people that buy their tuner, probably more than the Hypertech. Also, its not like Diablo has been working on the update for years either. I just heard that a new version would be coming out a few months ago and I'm sure it will be available soon. I'd rather wait for the beta to complete and be sure I'm getting a fully tested product than having something rushed and end up being an unwitting debugger.

Kennedy showed the dyno plots and you still don't believe they are accurate for the Hypertech. Since you have a Hypertech and feel its a good tuner, rather than bashing the Predator, why don't you get on a dyno and post the plot...

So, I'm all for the data. I have heard results vary by dyno.

Kennedy - You're not offending anyone, at least not me. Those who use Hypertech want to know if the output claims from Hypertech are accurate - that's what I went by when making my decision. I'm sure power output is slightly lower than others which is suffice with some. Some may bash you but I haven't seen anyone with HyperIII putting testing with a dyno. One thing I noticed on your charts the other tuners have aftermarket exhaust and the Hypo test is stock. Were your #'s rear wheel or engine?

-Has anyone else dyno'd with HyperIII? I would like to see a comparison between a complete stocker and the 3 levels including boost #'s

-Don't all programmers raise EGT's?

-Lower boost = less power?

-Anyone in the Bay Area know of a dyno shop? I'm willing to dyno mine and share results unless someone else wants to go with.

Sorry for being ignorant - I am far from an expert in this area.

Link to dyno chart from Hypertech (LLY):

http://www.hypertech.com/images/dynocharts/gm04056.6LLLY.pdf

*note - The truck they dyno'd at Hypertech is a manual 6 speed. Doesn't say if the results were rear wheel or engine

You can Mark my word, I am not a shareholder in Hypertech! I am into them for around $330 for the product and it is the first one I have owned. Like I said, it a good product for the money and regardless of what a dyno says it performs on the street as described by Hypertech. I don't need a dyno to tell me that.

As far as DiabloSport goes, yeah they clearly don't have their act together on this latest "fix" to the product that they released too early without proper testing. On top of that they are obviously communicating very poorly about the issue. It is hard to argue the facts! Does that mean I hate Diablo or wouldn't buy something, no I might someday.

As far as bashing goes, I would say Hypertech has had its share on this board all because of a dyno run that may not be all that it's cracked up to be.

Now, if you want you can slowly reach around your backside and with a swift tug remove the wadded up panties out of your chapped asss!!!!! :eek:

Out!

My results are always rear wheel, and without correction factor. Any runs made with my LLY have my exhaust on them as I installed it quite some time ago. The results can vary from dyno to dyno, but we are talking 2 trucks on same dyno with same test and same test that all other mods are subjected to. Add to that, the Superflow is the best unit available and highly repeatable.

I offered a while back to load and test it for anyone who wanted to try it so I could confirm. Running it again on a 2004.5 and seeing the same lousy curves is proof enough for me.

...As far as DiabloSport goes, yeah they clearly don't have their act together on this latest "fix" to the product that they released too early without proper testing. On top of that they are obviously communicating very poorly about the issue. It is hard to argue the facts! Does that mean I hate Diablo or wouldn't buy something, no I might someday.
...!

The only problem I'm aware of the Predator LLY 100 has is that the datalogger doesn't show boost correctly. I received one of the first production units, and it works very well. Puts out about 120RWHP.

For the money, it still wins the Bang For De Buck award.

If you want "stoopid" power, seek the PPE/VA stack. Not cheap, but serious power.

Axe has got to be a troll. No point in responding.

Axe has got to be a troll. No point in responding.

Mark clearly needs a hanky! Trolls don't carry them, can someone help?

Hey I see you have an LTZ 400, if you want to see some dyno results on my KFX 400, I will post them. You will be impressed with the 50HP and 38 ft.lbs of torque. Maybe we can agree on that common ground and we can be buddies!

Out!

Axe,

LOL, only if you ride on sand! Have only put a pipe and filter on. Bought it before the 450's came out and was king, for a while. A little lacking now up against the 450's but have not been able to put any cash into it. Sank all my money into my toy hauler and this truck...

Nothing personal here. I don't have a hypertech or predator but I have followed closely all that is out there on them and others to try to decide which is best for me. My personal opinion is the Hypertech is lacking and I think there is evidence to back that up. If you feel Hypertech is better for you that's fine. We can agree to disagree...

Just got the impression you were trolling from some of your posts. A BBS troll is someone who just starts an arguement for the sake of it and just trys to stir things up.

Mark

I have been running Hypertech for almost 8 months now and I like it. I did have the Edge and did enjoy the power but I wasn preparing to tear apart a brand new tranny just for my greed for more power. It has enough as it is. I would love more but I must settle for the way it is. It is NOT underpowered in any way. Hypertech on level 3, to me has better low end torque than Edge on level 3, which is far as you can go with a stock tranny. You wont be dissapointed.
what is your mileage at stage 3 city and highway ?

I am getting about 15-16 mpg on level 2 and about 14.5-15 mpg on level 3. There really isn't that much of a difference that I can tell so far, so I am going to run level 3 day to day and level 2 when I am towing anything of size.

Overall, I think if you don't have the lift and larger tires you can get a couple more mpg. A buddy of mine running on level 3 said he was getting 18 mpg when running stock and even seen 20 mpg under ideal conditions (flat terrain no wind).

Out!

Beating around town I usually get around 400 miles to the tank. Not bad for 26 gallons. Highway, I've seen up to 26 mph at around 65-70 with the cruise control set. I have no porblems at all. In fact, I sent my truck in for tranny service and they gave me the latest software update without me asking for it. When I went to plug the Hypertech back in at the house, it said calibration not found. I called Hypertech and they simply said, send the unit in with the recipt from the dealership stating that they updated your computer. I did so, and 2 days later, I was running tuned on level 3 with the latest GM software update. Hypertech has great customer service.
I liked the Edge but had absolutely no desire to tear apart my tranny just to run on level 4 or 5. Trust me, I would love more power but right now Hypertech is enough for me. I have more important things to spend my money on than a new tranny for a truck thats a year old. I didnt pend 42k on a rig to throw away the warranty in 6 months. Now, when I win the lottery, sure, then, and only then, will I upgrade the tranny. And when I do, I'm putting in Banks, not Edge. I had too many problems with too many Edge boxes.

That is some pretty serious mileage on the highway at those speeds. The best I have heard is around 21-22 mpg with speeds around 55-65 mph and flat terrain. Must not have too many hills around you. Just curious if you have adjusted the Hypertech for larger tires? Those 285s are about 33 inch tall.
Out!

Axe:
I did adjust the programmer for 33's but it was off by 5 mph reading faster than I was going. I finally got it figured at 32.0 was the best mix. And now it reads accurate and the GPS agrees.

Does the Hypertech correct the Speedo on the truck for 35's? It seems no-one does this unless you ignore your stock guages and watch the info on the tuner box.

I think Hypertech reprograms for up to 42" tires. Mine reads spot on with the 35s and the odometer is correct as well. Some people say that the DIC mileage gets off when you are running the programmers, but I don't have that option on my truck anyway, so I can't say for sure.

Most of the programmers (Hypertech, Superchips, Predator) will correct speedo/odo readings and some raise the speed limiter.

Out!