Here is a car I just finished today. Customer came in with an 02 Z06, only mods were minor. Haltech air intake, corsa indy catback and an x-pipe. The lower red graph line shows the highest of what the car pulled without tuning. You can tell the car needed some help, and the results were better than I thought they would be. This car seems to want to make some realy damn good power for stock internals and no headers. Enjoy.
Nice gains! Should answer most of the "should I get a tune with my mods" questions.
A couple of items on the graph are puzzling to me though.
First, at the top it says flywheel power and flywheel torque. I know you use a dynapack, but it still measures power at the axles right?
Second, what's with the drop in torque and hp at 4100rpm on the stock dyno? I notice it's still there after the tune, but is reduced a great deal. Were you picking up kr on the runs?
Nice gains! Should answer most of the "should I get a tune with my mods" questions.
A couple of items on the graph are puzzling to me though.
First, at the top it says flywheel power and flywheel torque. I know you use a dynapack, but it still measures power at the axles right?
Second, what's with the drop in torque and hp at 4100rpm on the stock dyno? I notice it's still there after the tune, but is reduced a great deal. Were you picking up kr on the runs?
you will find that with a dyno like mine where it picks up everything during a run, this is natural for alot of the LS1 motors. I have yet to find many "perfect" combos that have very linear graphs. Most LS1 setups have dips and such, but when you drive the car, you never feel these things happen. No KR on the runs.
Seems a little high as compared to a Dynojet. Dynapacks usually show 20-25 hp less than a calibrated Dyojet. What did you have the load settings adjusted to?
Seems a little high as compared to a Dynojet. Dynapacks usually show 20-25 hp less than a calibrated Dyojet. What did you have the load settings adjusted to?
Its actually not that high. I have other Z06 stock cam only cars that did less and this car seems to make more power. Some cars do, some dont. There is no difference on the load factor how I test this car from the others. I also never compare to a dynojet. Sorry.
I only mentioned Dynojet because >90% of the dynos out there are from Dynojet. People can get a better feel for the actual HP numbers that way.
I've tuned on Dynapacks before and once you get past the RPM start and stop parameters for the test, they're very decent (expensive) dynos. Probably more accurate than other dynos, but just not as popular.
I only mentioned Dynojet because >90% of the dynos out there are from Dynojet. People can get a better feel for the actual HP numbers that way.
I've tuned on Dynapacks before and once you get past the RPM start and stop parameters for the test, they're very decent (expensive) dynos. Probably more accurate than other dynos, but just not as popular.
Very true, thats why I bought my dynapack. Yes, very expensive also. I like the sheer accuracy of the unit, and considering what I can do with it, it makes it worth it.
Actually Rick's dynopak has been compared to a local dynojet on several cars. It was either right (exactly) on the money or the deviation was less than 1%. Which could be easily accounted for. Like dirty plugs, oil, weather, yada, yada, yada.
Either Ricks dyno reads higher than the local dynojets, or the dynojets read very low, according to the differences measured by people who have dyno'd on both setups.........who's car are you referring to, Brent?
I know Mike came in a fair amount lower when he went to Newtech in Hayward, and didnt Jerome see much lower numbers on a dynojet with his 402?
I noticed Jerome trapped 119 with 450/460 and Mike went 117 or 119 with 430/400. The trap speeds sound low for the power numbers. For reference, my friends matt and gary both went 123+ with 430rwhp. Im sure some of it is the driver factor, but based on what Ive seen Im inclined to think the dynapack reads a tad high. Ive seen Morzoff state the same thing on z06vette.
Then again, as Rick will tell you, the number is just a number. Its how the sucker drives.............
Actually Jeromes was right on the money. I got this from both Mike and Troy.
Mikes had small issue at the time, which was corrected, but the delta comparison was minimal.
Rick was able to drive one the cars significantly faster the first time out as the owner had never run down the strip. Like over a .5 seconds which accounts for what you speaking of.
Not to pick nits, but the trapspeeds for Mikes car that I referred were the times Rick put up.
Jerome went to a dynojet and made much less power, and then went back to synergy, where he duplicated his earlier numbers. But the dynojet was off. Maybe he can comment?
Either Ricks dyno reads higher than the local dynojets, or the dynojets read very low, according to the differences measured by people who have dyno'd on both setups.........who's car are you referring to, Brent?
I know Mike came in a fair amount lower when he went to Newtech in Hayward, and didnt Jerome see much lower numbers on a dynojet with his 402?
I noticed Jerome trapped 119 with 450/460 and Mike went 117 or 119 with 430/400. The trap speeds sound low for the power numbers. For reference, my friends matt and gary both went 123+ with 430rwhp. Im sure some of it is the driver factor, but based on what Ive seen Im inclined to think the dynapack reads a tad high. Ive seen Morzoff state the same thing on z06vette.
Then again, as Rick will tell you, the number is just a number. Its how the sucker drives.............
Hello I think one off the resons why my trap speed was on the low side is because i did not have and traction in the first 3 gears (running street nittos 275/40/18) because of this i only went about 3/4 thorttle in first ,second and granny shifted 3rd so i can get a little traction I am sure with some proper tires my trap speed would be higher. Another thing that i have noticed was when i first got my car the previous owner had it tuned by charlie (A & A ) and the dyno numbers where at 403 rwhp i then took it to rick to have it dynoed (Mind you nothing was done to the car yet) and it dynoed at 395rwhp. From what i understand about dynojets there are quite a bit of things that can be done to have your car dyno higher or lower depending tire presure how it was straped down or even programing. On a dyno pack you take that out so the numbers would be more accuate. Please somone correct me if i am wrong.
Thanks for chiming in Jerome, good info! Im sure you will get lots more out of the car in due time.
Btw, I dont think tire pressure and strapping the car down will affect power more than 1hp. Unless its a 1500hp car that hasnt been strapped down tightly enough and it starts spinning on the dyno, of course.
Actually straping can affect the number at much lower rwhp number as well as wheel weight. Which is why the dyno pak is very accurate it takes the percentage out immediately. I believe (15%) is what Rick has it set for. Which is high, especially for manual FRC or Z06, where the drivetrain loss is around 12%.
Yes, Jerome is absolutely correct the pressure in the tire will also affect the number on a dynojet.
I specifically spoke to someone that is a good friend of Nicks, who is friend of mine. Nick said is was to nose.
I am positive both cars are running hard street tires. Mike a few days ago has changed out his F1 Super Cars and stock rims for some CCW's, with rims for rear drag tires and rears with stickier street tires.
Power is worthless if you cannot hook it up. Next time you see him at the track, we will have him in the low 11's. I bet you with the right set of tires (that are in the shop (I was eyeballing those REAL drag tires today)) and a good clutch, I could put that car in the tens, cam only, with a good light and perfect 5,000 rpm dump.
The cam is very similar to a particular Cartek cam. Rick, myself, suggested it to Mike. Found out later, how close it actually was to Dave's spec's.
Last edited by #001 2001 Z06; 11-18-2005 at 01:03 AM.
Low elevens for him, and tens for you in his car on his current setup?
whats the wager? I predict 12s and MAYBE high 11s for him, and maybe low elevens for ya.
I think with the right set of DR's Mike will get it into the 11's pretty easy as long as he can control that lead foot of his. I am willing to wage a hotdog at the track that mike will turn a 11.898.or better We all know mike is one crazy driver and won't leave untill he gets it right.
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Z06 Dyno graph...nice gain.
I am sure with some proper tires my trap speed would be higher. Another thing that i have noticed was when i first got my car the previous owner had it tuned by charlie (A & A ) and the dyno numbers where at 403 rwhp i then took it to rick to have it dynoed (Mind you nothing was done to the car yet) and it dynoed at 395rwhp. From what i understand about dynojets there are quite a bit of things that can be done to have your car dyno higher or lower depending tire presure how it was straped down or even programing. On a dyno pack you take that out so the numbers would be more accuate. Please somone correct me if i am wrong.
We all know mike is one crazy driver and won't leave untill he gets it right. 
