Comp, '02 HO dyno numbers...

[Gary - K7GLD]

For any curious (I was!), here's dyno number on my '02 HO with ONLY a Comp installed... This was at Imler's Diesel Performance in Sacramento, on a Mustang dyno...





Dyno sheet of my run - penciled in numbers are equivelent flywheel numbers:



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MORE pics of the dyno day here:





http://216.235.147.117/forums/showthread.php?s=&threadid=58664

 

[KatDiesel]

for others "comparision" sake. . what gear did you run in? Just in case anybody out there was wondering... .

 

[Bigsaint]

Hey Gary, sweet looking truck, I'm digging those flames . Ditto on what Kat asked, what gear did ya run in and what was the comp. set on ? I would have thought your RWHP would be higher if the comp. was set on kill ?



Scott W.

 

[work2muchplay2little]

Is your injection pump wire tapped? What you have looks like what you'd expect from just the "EZ" part of the comp.

 

[Gary - K7GLD]

Dyno runs are normally made in direct, 1:1 ratio - 5th gear in my case with the 6 speed...



As far as power is concerned, I had 3 runs made, Comp "off", 3x3 and 5x5 - the above sheet was the 5x5, which is why the penciled in 5 can be seen in the comments section.



NOW, for comparison, with the Comp off, I made 204 HP, and 437 torque - keep in mind that even with the Comp off, I still get over 10 psi more boost due to the turbo elbow mod, so corrected #'s would be 256 HP and 546 torque at the flywheel - using the correction factor Ken Imler uses - that's about 10 hp more than Cummins spec for the completely stock engine, and 40 more ft lbs torque - about what is reasonable for the added boost over stock.



SO, I'm seeing at full load, 5x5 on the Comp, 80 more HP and 219 more TQ than with the Comp off, and 111 more hp and nearly *315* more TQ than stock engine rating, at the flywheel...



Now, you can compare and cut that any way ya like - EZ or otherwise - and it's not too shabby! - At least, it was enough to match and exceed ANYTHING the comparable Ford guys showed up with, including one with propane, power chip, injectors, Banks, and substantial intake mods... The '02 Fords there with only chips and injectors were WAY down lower in power than my '02 Dodge - so, I'm not TOO ashamed...



OH - and by the way, with the Comp on 3x3, where I normally keep it set (keep in mind the 50% increase in boost psi even with the Comp off!) - I registered 266. 4 HP and 627 torque at the rear wheels - that's 333 hp and 783. 5 at the flywheel - or, a gain of about 88 hp and 278. 5 ft lbs torque over stock at the flywheel - and THAT, or slightly less, is about what *I* would expect from an EZ on my truck...



In any event, my setup can be run at full throttle up any Sierra grade towing our 5th wheel, never sees EGT above 1200, and even tho I'm getting about 100 more ft lbs torque than what many consider the stock clutch to be good for, have done great so far - don't think I could push things much more without getting things out of "balance" in terms of reliablity - I'm well satisfied with what I've got...



Not bad for a single $600 add-on, especially compared to what the Fords had - to get LESS power to the ground!

 

[Cummins4Life]

Still on the stock clutch?

 

[Gary - K7GLD]

YUP - the clutch is still stock - but only 6000 miles on the truck - lot's of it towing - we'll see what happens further on down the road. I certainly don't baby it on the grades, but I don't abuse the clutch while shifting, either.

 

[TxDieselKid]

as is said, HO's respond better to injectors, try some of them if you REALLY was a "shoot eating grin"!



What clutchs have you thought about? Southbend is the way to go IMO.



Andrew

 

[Evan A. Beck]

Only 285 with a Comp... I am a little surprised. However, a friend ran his '01 HO with a Comp and DD2s on the dyno and only hit 368. For comparison, with my DD3s and an EZ, I ran 391.

 

[Snow man]

Evan you dyno'd at DD,it seems like DD's dyno is a little optimistic,from looking at the numbers,this is just my opinion. I dont think there is an accurate comparison,unless its the same dyno,same day. At leats they are all relative to each other that way,with te actual # being not as important.

 

[Gary - K7GLD]

It's pretty easy to lose yer perspective with this add-on stuff...



For a fact, with a 6-speed, my truck is certainly not for drag racing - nor do I ever plan any sled pulls... It's primarily for local transportation, and largely to pull a 7000 lb 5th wheel. I can do that with the Comp alone, easily, and probably top the Sierra at 90 mph in OD if I am crazy enought - I maintain decent EGT no matter how steep the grade, or how long I keep my foot in it - my clutch seems to be doing fine so far, and all other elements of my drivetrain are relatively safe at what the Comp alone delivers.



I can only go so fast, safely, up a grade - and am fully capable of that limit NOW with what I have - so why invite disaster by adding still MORE that I neither need or could safely use?



I set a goal - REASONABLE power, while maintaining decent FULL DRIVETRAIN reliability without the need of apprehension when out in the middle of nowhere, in the dark and on a cold winter night... I'm THERE with what I have - so why push it?



I know the addition of injectors would greatly increase power over what the Comp alone delivers - but for what purpose for MY needs?



I'm pretty happy with what I already have, especially as compared to what I see the competition does with LOTS more $$$ invested...

 

[KatDiesel]

Originally posted by Snow man

Evan you dyno'd at DD,it seems like DD's dyno is a little optimistic,from looking at the numbers,this is just my opinion. I dont think there is an accurate comparison,unless its the same dyno,same day. At leats they are all relative to each other that way,with te actual # being not as important.

I tend to agree with the same day same dyno. However I must say that DD's dyno is the "closest" to being realistic as it can get on my truck so far. If you take the times... . and more importantly my MPH I ran in Vegas... and the weight 6500lbs with a lil over 1/4 tank of fuel... ..... and do the math... I'm over 500hp. DD's dyno showed 512hp my chip... and 504hp with their chip. And I ran 13. 5 at their strip. I have a better turbo now..... and a tighter TC... ... and in TX ran the fastest 1/8th mile I have ever ran... ... yet the TX dyno only showed 446hp earlier that day... ... . so take it for what its worth.

 

[Evan A. Beck]

Strong 3s...

Snow Man, we made 3 dyno runs when I was at DD this past summer... THe first was done in 5th gear, where I was able to hit a shade under 380 HP, and the last two were done in 6th. I ran 390, then 391. Seems the turbo spools up a little more aggressively when in a taller gear. I am going to get on another DynoJet up here in WA and see what it does at sea level. After that, I will put my HX40 on, and see if I can hit 400+.



Here's some more interesting info... I dynoed at BD on their Mustang with JUST the injectors, and hit 347 and 350 HP on two runs in 5th gear. The injectors I have are old style Stage 3, and came from a batch produced back in late '99. So needless to say, I have a very strong set of 3s... Lawrence was quite impressed, and kept asking if I had another hidden box under the hood somehwere! *LOL*

 

[Evan A. Beck]

Interesting info, Kat. From others I have talked to, DD's dyno is very accurate.

 

[KatDiesel]

Originally posted by Evan A. Beck

Interesting info, Kat. From others I have talked to, DD's dyno is very accurate.

I'll be on a dyno in KC on the 10th... another dynojet.



I've dynoed their before but all I ever had was the PDR HX35 and DDIII's... ..... and that was 447hp. So we'll see what it shows with bigger injectors.



I haven't had a chance to hit the track since I got back from TX ... weather and schedule conflicts.

 

[Snow man]

Kat,you made 512 on a dynojet,with BD4's,correct. This is very high,IMO. I have almost the same configuration,with way more fuel,and couldnt hit 500,Doug smith hit 505 w/PDR cam with BD8,s the same day. I just find it hard to believe that you would hit 512 with bd4's,on the same day/dyno I only got to 485 on,there is a huge difference in fuel between the bd4's and 5's and bigger. if you werent running those 4's,then none of this is relevant. I have the drag comp,I know there are custom comps that will fuel harder,if you have one that explains some of it.

 

[KatDiesel]

Originally posted by Snow man

Kat,you made 512 on a dynojet,with BD4's,correct. This is very high,IMO. I have almost the same configuration,with way more fuel,and couldnt hit 500,Doug smith hit 505 w/PDR cam with BD8,s the same day. I just find it hard to believe that you would hit 512 with bd4's,on the same day/dyno I only got to 485 on,there is a huge difference in fuel between the bd4's and 5's and bigger. if you werent running those 4's,then none of this is relevant. I have the drag comp,I know there are custom comps that will fuel harder,if you have one that explains some of it.

Yes BD IV's.



The IV's are rated at 120 hp... ... . DD III's 100hp. You made 485hp... . with DD's chip I made 505hp... ... theres 20hp difference? Its not surprising Doug only made 505 with BD VIII's. Was your 485hp with the BD VII's or the DD III's? I'm guessing since you said way more fuel it was with the BD VII's... ... . Its all about airflow... ... or in most cases lack there of. However he hits the nitrous and its all over. If the dyno numbers don't make sense on my truck... . then how can you argue/explain the times I run with my weight... doing the math?



To me its "right" on track... . with PDR HX35 and DDIII's I was at 447hp on a different dyno. Add injectors, bigger turbo, cam... . and I am sure thats worth 50hp. The trick is finding the happy medium of injectors in relationship to turbo. Hence once I nail 12. 9x on #2 only single turbo. I'll go twins. I want 600hp #2 only.



I'm going to some hefty injectors ... . and I am prepared to lose hp because of it being too much fuel. But they will be my daily drivers for twins. I'm gonna dyno them and run them a few days but most likely take them back out for winter... too much lowend.

 

[Snow man]

Kat,I know 5-8's wont dyno much different without N2o or twins,but bd4's are quite a bit smaller. I need to get to strip so i can see where im at,the one run with the g tech said i ran 13. 15@103. 6,but thats a Gtech. track is over 2 hrs from here,and its mobbed. My estimated race weight is 6990. I weighted my truck at 6780lb im 210lb. Ill say this,you got a strong truck,a real strong one. Kat, i hit 485/979 with the bD7's. To be fair my truck wasnt up to temp when it was run,which may affect the readings some. I was hoping for 500/1000. Maybe another day. I still have the 7';s in now,ill drop back to dd1's for winter/plowing.

 

[Chipstien]

I'm thinking of going from DD3's to BD5's. What will I gain? What would I lose? How about BD6's. Should I consider Supermentals or Megamentals. PS. I currently am running the HY, but before the injectors go in a Pier's HX-40 is in order. I want more, more, more. :{ :{

 

[Gary - K7GLD]

JEEZE, you guys ARE power mad - crazy, crazy I say!



Shucks, with THAT sort of power, I could stretch my 24 foot 5er into a 30 footer with a fast start...



NAHHhh - think I'll quit while I'm ahead... StILL, Ken over at Imler's in Sacramento DID say it would only run about $600 to upgrade my injectors.....