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MP DYNO results-LLY vs Kodiak

34K views 146 replies 41 participants last post by  demp223  
#1 · (Edited)
After comparing all the pulls and video of gauges I have ###s.
See signature for truck type.
This dyno comparison is between stock LLY mp with LLY intake tube vs a Kodiak mp and LLY intake tube cut down with 4-3.5 silicone adapter.
Ken Imlers Mustang dyno.Numbers are to the rollers with weight of truck set at 8300 lbs which is what it weighed at scales.OAT low 60s at start high 60s at end.ECT stayed consistent before each run except for run #5.Took almost 1hr start to finish.

We did 3 pulls for each run(MP/ tune combo). Predator 120hp tune and stock.
Pulls were back to back and appx 12 minutes between each run to allow retune and swap of MP and cool down.Last run was to add boost stick and there was no break between pulls(no cool down).

Dyno runs were in this order.
1=Predator 120hp with LLY mp===========fuel temp 86,OAT 62,ECT 180
2=stock tune with LLY mp ==============fuel temp 92,OAT 63,ECT 183
3=stock tune with Kodiak mp============fuel temp 101,OAT 66,ECT 183
4=Predator 120hp with Kodiak mp========fuel temp 109,OAT 68,ECT 186
5=Predator 120hp with Kodiak mp and B/s==Fuel temp 121,OAT 69,ECT 210

I averaged out pulls in each run to compare to its counter setup for overall results .Each pull per run was pretty consistent.

Stock tune Kodiak mp averaged 4.5 hp and 5.6 ft lbs more than LLY mp plus a 50* reduction in EGT. LLY mp climbed steadily to 1225 EGT while Kodiak climbed steadly to 1100 then creeped up to 1175 EGT.
Predator 120hp tune Kodiak averaged 4hp and 13 ft lbs more than LLY mp plus a 125* drop in EGT. LLY mp climbed steadily to 1525 EGT while Kodiak mp climbed steadily to 1325 then creeped to 1400 EGT.

Best pull of stock tune run. 21 psi hold
LLY mp=========262.0hp @ 3000 rpm----498.9 tq @ 2250 rpm
Kodiak mp=======266.4hp @ 3000 rpm----506.2 tq @ 2250 rpm

Best of Predator 120 tune run. 24 psi hold
LLY mp=========395.8hp @ 3000 rpm----790.7 tq @ 3000 rpm
Kodiak mp=======395.4hp @ 2750 rpm----795.6 tq @ 2500 rpm

Final run with Boost stick was to see what it could do to EGT and extra power on a pretty hot motor with hot fuel at this point.Only had 1/4 tank in truck.No break between pull as it only takes 30 seconds to pop in B/S
Predator 120hp
Kodiak mp with B/S=403.3hp @2750 rpm----787.3 tq @ 2500 rpm
Boost hit 33 psi hold and would not crack 1350 EGT.

There you go,
D

All pull posted in post # 27 in order
 
#3 · (Edited)
So it looks like there is minimal HP/Torque gain with the Kodiak MP on a fairly stock truck, but EGTs are held in check. Looks like with the Boost stick the Kodiak MP keeps the EGTs very much under control.

Thanks for taking the time (and your hard-earned $$) to do this test!
 
#4 ·
If these are peak numbers, how do the curves look through the rpm range? 1500-3400rpm? I was never a fan of advertising peak numbers but would rather see how the curve changes through the whole range.

Let's just say i've seen lower peak numbers make more average hp across a curve and thus be quicker and faster all around. :cool:
 
#7 · (Edited)
The curves are almost identical except with the subtle bump in power.Only exception is Predator 120 kodiak mp tune peak hp comes on 250 rpm earlier.Other than that it is so minor you wouldnt know it was different chart.The EGT reduction is really the benefit.
 
#5 · (Edited)
Well, I posted on the other thread that I thought there would be a 10-15 hp increase pushing it hard. I'm a little over 500 hp with mine. I still say its a drivability mod & I'm still happy with mine. :)

I also offered to pony up a little $$ to help out with the dyno expenses. Send me your Paypal address and THANKS for doing this!! :thumb:
 
#9 ·
With over 400hp to the ground Im at least over 500 at crank.Ken recommends lift pump if I want to keep running that tune and not loose an injector.One more thing to save up for I guess.
Pm sent
 
#6 ·
Interesting stuff and settles that question and/or debate.... Any chance you have the dyno graphs electronically or able to post them, would be also very interesting like Confrontational stated to see HP and TQ curves through the rpm range.

Thanks again for sharing the info, very much appreciated! You're the man!
 
#15 ·
Definately makes me feel better about spending the money, I mean it looks like it would help, but nice to see on paper. Thanks
 
#16 ·
Cool, so that's it for the Kodiak. I wonder if there would be a difference with the LBZ mouthpiece. It has a bigger inlet than the Kodiak does right?

Thanks for taking the time and effort to put up some numbers for us.
 
#20 ·
Cool, so that's it for the Kodiak. I wonder if there would be a difference with the LBZ mouthpiece. It has a bigger inlet than the Kodiak does right?

Thanks for taking the time and effort to put up some numbers for us.


dear god, here we go again
 
#17 ·
great results now to find somewere that stocks the lbz-kodiak mouth piece:D
 
#18 · (Edited)
I realize that it is difficult to steady all variables, but I just want to point out an observation. All the "after" runs are performed under heat soak conditions, progressively. If you logged IAT, and can post that, this will be more evident. It is well documented that heat soak and reduced MAF from rarified conditions leads to underperformance. IMO, these results are a little conservative from this perspective.

Nice effort, thanks Demp.
 
#21 · (Edited)
I realize that it is difficult to steady all variables, but I just want to point out an observation. All the "after" runs are performed under heat soak conditions, progressively. If you logged IAT, and can post that, this will be more evident. It is well documented that heat soak and reduced MAF from rarified conditions leads to underperformance. IMO, these results are a little conservative from this perspective.

Nice effort, thanks Demp.

Yep, I agree it should be accounted for.

Oops forgot to say Thanks Demp and nice job.
 
#19 · (Edited)
"My bet would be minimal results. HP between 5-10, EGT 100-120 and torque about 25. My seat of the pants is minimal gain, although I have the LBZ intake and mouthpiece. I have not seen any significant changes in performance or egt."


It looks like GM and KB are the ones who benefited on this mod.
 
#76 ·
BS. For the cost, the extra power and lower EGT's are well worth it. It's also fixing something that GM should have engineered correctly in the first place.
 
#23 ·
Good work, looks like it will be a good thing for an engine with a bad reputation. Thanks for doing this.
 
#24 ·
Thanks demp, awesome results, my "BUTT" Meter was right on the money;)
 
#25 ·
Thanks demp!

It looks like the numbers are more along the lines of what I expected. I'm a hot rodder: I've worked on and had/have cars that I've done a ton of work on. I think I have a good sense of 'feel' when gains are made, and was quite sure there would have been more seat of the pants feel if there was indeed these 35-40hp gains that were claimed. I've achieved those type of gains on other vehicles, and the effects were noticed immediately. Of course, those vehicles weighed less than half of what these trucks weigh:eek:


Demp,

Like Rick D Lance, I'm still willing to contribute towards your dyno time. Or, if you or the general public here wants another set of numbers to chew on, I will work on getting a price for dyno time. Earliest I can get on the dyno now will be 3/23.

Thanks again!
 
#36 ·
...wants another set of numbers to chew on, I will work on getting a price for dyno time. Earliest I can get on the dyno now will be 3/23.

Thanks again!
if you do it above 6000 ft elevation, and can use a tune I provide, then I will pay half.

I am repeating myself, but I want to stress that on a dyno run like this, we don't see the best aspect of this mod...the compression heat reduction to the induction process, and the turbo shaft rpm reduction.

IMO
 
#28 ·
Nice, again thanks for the results. It is nice to finally have some numbers to dis spell a lot of speculation, although the discussion was interesting.
 
#29 ·
Thanks for posting your numbers... I thought it would be a little more then you had seen, but then I have the complete LBZ intake tract.

The curiosity is getting to me now. I will have to check my local dyno shop to see if they would do my truck now. Being a ricer tune shop, could their dyno accommodate the torque of a diesel?
 
#30 · (Edited)
You have to ask.A few that I checked with couldnt handle torque let alone size of truck.Needed to pull off outside duals.
Imlers dyno just rolled truck right on up with about 8 inches on each side.
 
#31 ·
Demp,

Check your e-mail, you have a few $ sent your way!

Thanks again for taking the time to test this. Have a few beers on me!!!:D


Out of curiousity, how much time did all your pulls take?
 
#32 ·
Almost 1 hr exactly. Appx 12 min break between each set and appx 1 min per pull.
After that we did pulls with boost stick and a few 1/4 mile simulation 2wd pulls.
Thanks again.Very much appreciated. Tri tip BBQ tonight!!!
 
#39 ·
briano,

Sorry to hear that. I might have missed some of your work, or the subject was one I passed over, or I'd have sent something your way. Don't stop experimenting and sharing results; there might be more of me out there that are willing to contribute, since you will have saved us so much time by doing the testing.

Now ya got me thinking, and I'm gonna dig thru here and see what you've all done!:)
 
#40 ·
Thanks again to those that donated and to Duramaxdave for shipping me his stock LLY mp. Without it I wouldnt have been able to compare.
This site and its members are full of great info and am glad to help as it has provided me with many great improvements to my truck.