just wondering what everyones thoughts were one upper end egt readings , basicly wondering the upper end numbers to look out for when playing , or possibly towing tho i dont tow that often ...... i have my predator set to the 85 tune , now or i usually run the 65 tune. its real easy to see 1300 - 1350 , or 1400 but was wondering how long its safe to run with those numbers , steady or not ?????????

any input would be great !!!!!!!!!
the05hd :ro)

I wouldn't tow with anything over the 65 tune on the predator if you have a stock tranny and keep the EGT's at 1300 or lower.

There have been numerous discussions on the DP regarding EGT's. We really haven't established a rock solid "highest EGT's for how long" standard, though LS's recommendation seems to be the majority concensus. :) Monster Banks exhaust and still running some pretty high EGT's, did you remove the CAT? If not you may want to remove it if you are going to "work the beast"! :rolleyes:

Plenty of guys nail EGT's of 1600*+ racing their trucks, but these are during their runs and only for a few seconds. If you tow heavy up inclines and keep your foot in it you may see higher EGT's for longer periods and should watch things carefully. The Predator seems to run higher EGT's than other programmers, not sure why? :confused:

There was a recent thread, IIRC on the LLY forum about EGT's where there was some good discussion. Try doing a search and go to school on these guys, lots of good intel. Congrats on your truck! Later. JJ :)

If air temperature is above about 75 I can't run the Predator at all towing. I hit 1450 on a long grade and had a hard time backing off enough to cool it down. Almost had to stop on the berm:eek: . I will be adding the Edge today and trying it on the road next week. It seems the Predator tunes have always run hot but I have talked to them about the lack of boost. When I run stock the increased turbo noise is obvious. I can boost more PSI stock than with the 40 hp tune.

For what it's worth, i spoke with Cole from Predator earlier this week about the low boost and high egt's with their 40hp tune. He told me they can adjust the "boost tables" with a custom tune. I am still waiting to hear back from him to see how they are going to do this. I may have to send my programmer back to them, but he indicated that he may be able to send me an "interface" for my computer and download it from an email they would send me. We'll see. I have been patiently waiting...but nothing yet.

He acted very surprised that so many here on the Place have been running high egt's and noting a lack of boost. I told him to hop on here and run a search on the Predator and high egt's while towing and he would see that I'm not alone.

I really hope they come through, becasue I like the Predators diagnostic capablilities, but I am not impressed with the tow tune for heavy towing. If they don't get a fix, I am going back to stock before I head for the steep grades, and high altitudes of Colorado this summer.

I can second (or third...) that. I've tried using the predator 40hp tune, and EGT's would easily top 1450'F on only slight grades on freeway running at 75mph. I had to start backing off the accel more and more, until I was ACTUALLY running slower than the stock tune up many/most hills. Stock tune never seems to go over 1300-1350'F (worst case).

I'm personally looking for a Edge Juice/Attitude now for towing with the builtin defueling as you approach the higher EGT's...for now I tow stock.

-JM

Be patient guys, a fix is on the way. I've been testing several custom tunes for the last few weeks. Not there yet, but certainly moving in the right direction. My egt's will still get way up there, but I have much more usable power before they start to climb. I pulled 9k up a fairly long 6% grade I started around 75mph and was able to accelerate to 85mph and still keep my egt under 1,300. Before I couldn't even maintain speed without getting to hot, let alone accelerate. I can still hit 1,650 on the pyro with the 100hp tune loaded, but it doesn't get there till I'm up in the triple digits, before I could get there by 75 or so. Boost is running 25-26psi, not as high as I would like, but better than 20 or so I had before. It also comes on MUCH quicker. I can hit 18psi very quick and easy. Before that was approaching the max pressure I could hit.

Is this update gonna be a free deal? I'm just curious as to how its gonna work.

I have a pred on my 05

I have a predator on my 04 lly, when I got it I thought there was no option to upgrade over the internet with a download. Is there going to be a downloadable upgrade coming in the near future? I would definitely be interested in higher boost levels and lower egt's

Is this update gonna be a free deal? I'm just curious as to how its gonna work.

I have a pred on my 05


It sure should be free. If you can't use the tow tune without risking your engine, what are you/we/I paying for?
In any case we all need a new tune.

I second that.,,,,,,,,,,,

Interesting! Keep us posted on the updates Pwdr Extreme!

It IS downloadable over the internet, I've tried several tunes so far. Still a work in progress, but getting better each time. The latest 45hp tune runs REALLY well. I accelerated up a 6% at full throttle from 70 to 105mph and only saw 1375 on the pyro. I'm leaving today towing for the weekend, I'll let you know how it does. Only downside is an intemittant check engine light. They fixed my check engine light on the 100hp tune, but I'm still gettin pretty hot 1600+ although it doesn't get there nearly as quickly as before. I'm seeing boost psi in the mid 20's.

Like I said, still a work in progress, but we are definitely on the right track!!

Pwdr Extreme

When can we expect to see the download available over the internet?

This is way cool. So far, this is my only real ***** about the Predator, as we've both commented on before Pwdr Extreme. I can pull like a freight train when running the Predator, but my EGTs just get out of hand too quickly.

To the original question:

For me, it's all about length of time. It really doesn't even make me nervous anymore to peg my 1600° gauge as long as it's for a really brief period of time. When towing, I really don't like to exceed 1350° period, and I won't go much past 1250° sustained. If I'm smoking ricers, then I'll let it rip north of 1600° for a few seconds. And I ALWAYS cool down after virtually any kind of a hard run/pull. Hopefully my recipe will lead to a long turbo life.

Update on towing: 45hp custom tune loaded. 75degrees ambient ~4500 altitude pulling 11,000 lbs. Climbing 7% 2 mile long grade at 70-75mph egt stayed low 1300's engine temp went to about 220 or so (dash guage) engine fan came on about 2/3 up the hill. Towards the top of the hill I floored it, downshifted to 4th, accelerated, egt shot up to 1490 max turbo pressure was 24psi. Flat cruising at 75mph egt ran right around 8-900. Interestingly, I never got a check engine light till I later unhitched and started running around 85mph, then the intermittant light started.

Bottom line for me: this tune is much improved over the original 40hp tune, egt can still climb outta line, but using a little common sense corrects that. Plenty of usable power on tap to climb the hills.

mgmack I have no idea when, that's a question for Predator. I would speculate it's still a ways off since I am still having some bugs that need to be worked out.

Any More Update?????

Any More Update?????

+1, i would REALY like to know, because i am wanting to buy a predator for my 05 LLY

Truck pulled great to California and back, only pulling around 7k though. 75mph up any of the hills, egt never went above 1376. Check engine light only came on a couple of times. Averaged 14 - 16 mpg, depending on hills and wind. I haven't heard anything from Predator since before I left, I'm going to try to get a hold of them this week and see where we're at.

Pwrd extreme:
we all appreciate the work your doing! I for one am very interested in the outcome. I'm all set up with the Predator/kitty less/and blocker plate. :confused: Wondering if I'm going to have any problems pulling my 8,000 lbs 5'ver.
Our big trip is going to Bristol in August from Michigan, for a full week of Racing.

Pwrd extreme:
we all appreciate the work your doing! I for one am very interested in the outcome. I'm all set up with the Predator/kitty less/and blocker plate. :confused: Wondering if I'm going to have any problems pulling my 8,000 lbs 5'ver.
Our big trip is going to Bristol in August from Michigan, for a full week of Racing.

I wouldn't worry about it, i'll run the juice off and see what i get w/ just the predator.
I was towing 14,500 over weekend, just put on 5" exhaust and 40hp predator tune, was running 1380* max w/ juice on level 1.
I'll start watching psi and temps more to see what happens w/ different power set ups.

My predator with a 40hp tune would hit around 1500 before I started messing with the new tunes. But for towing it was manageable if I would keep my foot out of it. What fun is that??!!

I think you would be fine if you just kept an eye on your pyro. You are also at a much lower elevation which will help. Most of my testing is being done at just short of a mile high.

I would hope that by August Predator will have a full release version out anyway. Again that is purely my speculation.

Thanks.... Any input would be greatly appreciated. dmaxalliTech and I both pulled the 5'vers down with the juice/attitude but with the new truck and different power set-up I've been very leery of the High EGT's I've heard of with the Predator. With the Juice set-up I could actually run level 2 and 3, with temps being lower than 1250.

Thanks.... Any input would be greatly appreciated. dmaxalliTech and I both pulled the 5'vers down with the juice/attitude but with the new truck and different power set-up I've been very leery of the High EGT's I've heard of with the Predator. With the Juice set-up I could actually run level 2 and 3, with temps being lower than 1250.

Hangin out w/ Eric WILL get u in trouble ):h

Hangin out w/ Eric WILL get u in trouble ):h

Isn't that the truth..:eek: .. But .... I have Bristol and Michigan tickets (EXTRAS)....... so I kinda have a bargaining Chip.....

I gotta tell you though. It's great to have the best to work on my ole Dmax.

Predator on kill, WOT 0-100mph, Max recall on my SPA reads
Boost = 30.4 lbs
EGT = 1745 deg F

Race Hemi:

I don't doubt the 1745°, but I see a MAX of approximately 23 psi boost under a full load. How are you getting way more boost than the rest of us?

Race Hemi:

I don't doubt the 1745°, but I see a MAX of approximately 23 psi boost under a full load. How are you getting way more boost than the rest of us?

i would say look in his sig for that answer ;)

You mean since he's stacking it with the TTS Tow?

The numbers were generated using only the Predator, it's not possible to "stack" the TTS and Predator. You could load the Predator over the TTS however, that is a big no-no. I saw 27lbs before the Vigilante/Transgo and 30.4lbs afterwords because the Ally will now hold WOT throughout 4th and 5th. Not sure exactly when or how long 30.4 was sustained, just know I let off around 100-105 and hit the recall button.

If only my co-pilot would keep her eyes on the gauge instead of the sight seeing:HiHi::HiHi::HiHi:

Where do you have the transducer for your guage mounted? I too am REALLY curious how you are seeing 30.4psi when most of see in the low 20's...... Highest I ever saw on EGT was 1676, but I did back out of it around 105mph instead of letting run to 115, I don't doubt it would have hit well over 1700. I just don't see how you are getting those pressures, and if you are, your egt shouldn't be near that high. I'm wondering if maybe you have a faulty guage? I've had transducers fail in the past and give me erroneous readings.....

I guess I shouldn't have said "stacking" since both are PCM type tunes instead of harness boxes. You meant what I knew, though!

I also have a tranny that is definitely holding everything I'm throwing at it, and under WOT, I just can't see much more than about 22 psi boost. It may spike to 24 psi, but certainly no more.

I copied turbo lcc, look here:

http://www.dieselplace.com/forum...highlight=boost

I will try verifying the numbers with a different gauge next week, the hard part will be making sure the co-pilot keeps her eyes on the gauge! :D

I did a WOT 40hp predator run and saw 25psi on the attitude (juice 0).

The 5" exhaust may help.

I just sent my Predator back to Diablosport today for them to load a beta version of the enhanced 40hp tune. According to Johan, at Diablosport, it is supposed to have increased low end boost and lower EGT's by 200-300 degrees. We'll see. I'm hoping to get it back by next week as we are heading for the hi-country in Colorado, and I will be towing our toyhauler which fully loaded weighs in around 15k lbs. I was hitting 1300-1350 pretty easy with the old tune, so hopefully this will be the ticket:cool: . I will post the results when I return, if I get the predator back in time.

Any new info on the custom tunes?? Really like the predator, but would like to know the egt's are in check while towing. TIA Mark

The Banks systems set up a "bypass" system to go to original factory settings if temp. goes over 1300 degrees...They've done a lot of research on diesels and the GM engineers agree with them...much more then that can really work on your turbo no matter who makes the truck.