Had the car dynoed yesterday at Coastal Chasis Dyno in Brandon Florida by Sam the owner. Great guy who seems to take alot of pride in what he is doing. I know you guys can relate when you have your baby in the hands of someone else. Its a mustang dyno which I am told is about 15% behind a Dynotech Dyno, so keep that in mind. Here are the results. First baseline pass 316.6 hp @ 6100 rpm and 307.3 tq after tuning.....sit down down......354.5 hp and 328.5 tq......thats right just tuning the car with the predator realized a 37.9 hp gain!!! and a 21.2 tq gain. Was it worth the $419 bucks I gave Sam........OH YEAH!!!!! My only performance mod on the car is a Donaldson Blackwing.

 

man that much hp from just the predator? :confused:

 

Holy Shizzznit! Nice numbers. :crazy:

 

:bs :bs :bs There is not a 02 Z06 in the world that would pull that lousy of a baseline pull, especially with a BW already installed on it.:nono: Your second numbers look like the numbers a totally stock 02's are pulling straight off the dealership lots. :smash: :smash: :smash: :cheers:

 

Great results you have a baseline and the results look good. Just keep using the same dyno and go from there for future mods. Rember some dynos are happy dynos (read high) , they make happy customers. You just need to see improvements from your dyno. :cheers: Ron B.

 

:cheers: :lurk:

 

Coastal Dyno has a Mustang Dyno so the baseline #'s are about right for a 02 Z06. I used that same dyno and when I got tuned by Sam I also picked up 35rwhp over my Ed Wright tune I had on my old setup.

 

:bs I dynoed my car on a Mustang when it was still fairly new before I modded it and I think it dynoed around 352rwhp.

 

Somthing aint right :confused:

What this a custom tune from RWTD?

 

Racer44 you can throw the bs flag all you want. Mustang dyno's usually put down 5 to 10 percent less horsepower than a dynojet. I have seen MANY stock Z06's put down between 355rwhp and 365rwhp on the SAME dynojet. At almost everyone of our dyno days we have a Z06 there. One of my good friends purchased a 03 Z06 6 months ago and his car put down 365rwhp STOCK. Now you are telling us you put down 352rwhp on a MUSTANG dyno? I think your dyno operator was a little on the happy side. 352rwhp on a MUSTANG dyno would put you right around 385rwhp on a dynojet. I saw Dwaynes dynograph and it shows the b4 tune and after tune dyno. He gained almost 40rwhp from the tuning. You have to remember GM tunes our cars on the conservative side. Most of the stock C5's I see on the dyno shows a/f's around 11 to 12. Leaning the car to around 13 flat alone would give you more horsepower. Play around with the timing and wallah. When my car was stock I put down 318rwhp/329rwtq. I added headers and the T1 cam and on the stock tune put down 369rwhp/365rwtq. I sent my pcm to Ed Wright and when it came back I redyno'd and I ended up with 390rwhp/380rwtq. Ed Wright said all he did was increase the timing from 26 stock to 30 degrees at WOT. My A/F was 13 to 1 b4 Ed's tune and 13 to 1 after Ed's tune. I can go on and on, but I would rather not tell you all my stories. Anyway, I really do not want to get into a arguement with anyone. I applaud Dwayne for getting rid of his brand new CLK55 and getting a Z06. Dwayne has no need to bs anyone and neither does the tuner.


[Modified by vmoore, 7:35 PM 1/24/2004]

 

:bs Those numbers look messed up. Your torque is way low for the power, and the first numbers are really bad. You will not get that much power from a tune, maybe 10hp if you are lucky.

 

Something was seriously wrong with your baseline pull. No tune will ever deliver a 37.9 HP gain on a near stock car like this unless something was wrong with the car in the first place.

 

It would be great but the #'s just don't fit. I don't know if you should be sad at how low your first pull was or happy that the Preditor gave you what you were missing in the first place. Not a flame it's just that the #'s are not what we usually see. :confused:

 

I hate to be the bringer of bad news, but like others have said..... your numbers are off. The baseline numbers are about what a stock LS1 puts down w/ the Blackwing. Your 2nd set of numbers is right on for a stock LS6 w/o a Donaldson, but the rwtq number is low.

You should be about 360rwhp and over 350rwtq w/ the Donaldson and no tune.

I haven't really seen any examples for the Diablo thing actually adding any HP. The only type of performance tune I have seen that actually works well, is LS1edit while the vehicle is on the dyno and in the hands of a good tuner. Good for about 10rwhp or so. Usually done after intake and headers to maximize the benefits.


[Modified by TexasRedZ06, 1:03 AM 1/25/2004]

 

:iagree: :nono:

 

Vince thanks for the input!!!......I guess I need to go line up with another zo6 and see what happens. I know that fater the tune, its like driving a a whole new car. Makes deactivating the traction control kinda scary. My last so called muscle car was a 97 Trans Am GTA ( first year for the 5.7) They use to call me Mr.Slideways cause i spent alot of time lookin out the side windows to see where I was goin. So driving it hard is all starting to come back to me. I guess what IM saying is that although IM having to relearn to ride the bike so to speak. I Can SOOOO feel the added ponies!

 

Well, I guess I will throw my input in here as well since I was there.... The car stock was a tad under 11:1 a/f, when done it was around 12.5:1 if I remeber correctly. It was dyno tuned with a predator and gained almost 40hp....FWIW, I dyno'd on a dynojet 100% stock 307/317...Temp/humidity/time were all about the same, and these are SAE corrected numbers. I also dyno'd Friday with DeWayne, and since my dyno on the dynojet I have added the exhaust and intake. I dynod on the mustang dyno 311rwhp/313rwtq - also corrected numbers. I will say comparing dyno runs from different dynos is apples & oranges but still, the car gained 40rwhp. No dyno tricks, no air pressure change in the tires nothing... 3 runs, right around the same time, same temp, same day, all within 15-20 mins of each other.

 

Ok, I've been doing some thinking on these and everyone calling BS.... Everyone read this with an open mind (and you may need a sheet of paper to follow along - I know I did).

My dyno stock on Dynojet - 307rwhp/317rwtq
My dyno w/ blackwing & exhaust on Mustang dyno - 311rwhp/313rwtq
PwtrFRC dyno on Dynojet w/intake (Vortex) & exhaust (Stingers) - 328/336

With my mods on my car, the most I might see is 330rwhp/336rwtq on a dynojet. If you take a 7% correction factor between dynojet and mustang, then the mustang would show me to have 307rwhp/312.5rwtq --

330rwhp Dynojet x .07 (correction) = 23 rwhp; 330 - 23 = 307 rwhp on Mustang dyno
336tq Dynojet x .07 = 23.5; 336 - 23.5 = 312.5 rwtq

Most people say that a mustang dyno is 10-15% difference than a dynojet, I am only using a 7% correction factor which is quite a bit lower.

Now apply this 7% to DeWayne's stock run ---

316.6 rwhp x 1.07 (adding 7% correction) = 338.8 rwhp ~ 339rwhp on Dynojet
307.3 rwtq x 1.07 = 328.8 rwtq ~ 329rwtq on a dynojet

GM states the z06 has 405hp/400tq at the crank, so assuming a 15% loss in drive train an AVERAGE z06 would put down about 344rwp/340. Using my 7% correction on the mustang, his car put down ~339rwhp/329rwtq which is 1hp and 11tq low of GMs claims from the factory....

Now his run after tuning -- 354.5rwhp/328.5rwtq...Add in the correction factor for the mustang dyno:

354.5hp x 1.07 = 379.3rwhp on Dynojet
328.5 x 1.07 = 351.5 rwtq on dynojet.

Doesnt 380rwhp/352 sound about reasonable on a Z06 with tuning and a blackwing? How can you say his car is low, when Vince's SS Camaro, by his own admission, with cam and headers was putting down 369rwhp/365rwtq? Can I get an AMEN?!?! :yesnod:


[Modified by Automag928, 6:52 PM 1/25/2004]

 

Any way you try and explain it, it works out to be :bs 354 x 10% = 390rwhp with just a blackwing and tuning?? :confused: :confused: Sorry, I stand by my :bs

Lets say it is more like 5%. 316 x 5%= 331rwhp for an 02 Z06 with a Blackwing? Again :bs

We won't even go to the 15% that boss4zo6s' tuner said was the differance
:rolleyes:

Anyway you look at it, there is something wrong with the numbers. :cheers:

 

There is no way a jump from 11:1 to 12.5 will result in 40 RWHP. That is impossible. That type of A/F swing on a near stock car would be worth 10-15 RWHP max.