Dyno with bolt ons 98 Z28

98 Z28 M6 w/75k miles
I had a bolt ons tune done at TTP in NJ.
Mods were as follows:
Kooks LT's with cats
SLP Loud Mouth
MTI Lid
Pulley
The car has a hypertech tune on it before, put down 335 before and 345RWHP after. No detonation and clean a/f which was no goal. They did a good job and I am happy with the numbers, now time for a cam

Are these numbers low, average, or high for my year and mods?
Last edited by srproductions; Nov 8, 2006 at 10:11 PM.
. I believe the SAE correction was 96%. Trending Topics
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. I believe the SAE correction was 96%.
. I believe the SAE correction was 96%.My 98 made 333/345 with the mods in my sig, but on the stock clutch(I imagine the non-slipping SPEC 3 and a way lighter flywheel picked me up a few at the wheels), would be interesting to compare it to the SAE numbers of this car.
I don't think they are disadvantaged in anyway. I did a 98 cam only (ms3) that put down 418 SAE before a 9inch.
on top of that my 98 vette dynoed 325 SAE with a tune, catback, and vararam which doesn't help being stationary at all.
There is no difference between the 98-00, 98's being inferior is a myth.
98 heads are the worst.If you take them off and put stock 00 heads on you'll gain hp/tq.
The tuner was embrassed by the results and I was shocked. Maybe I have a heat problem since the tuner said he could only advance the timing by 1 degree because of detonation. At 331 HP and 323 TQ, I am at a loss for words.
I think I will get another tune at a different shop. What else can I do?
. I believe the SAE correction was 96%.WHAT??? That is the reason we use a "standard" system for comparison is to control as many variables as possible vs. changes made to the platform... Otherwise you cannot truly isolate the differences between hardware changes or environmental impact...
But anyway nice numbers out of a 98 im sure your enjoying them.


