Typically, when a car does not trap the MPH it's expected to...it's because the car is not making the power it's assumed to be making.

Maybe you have a boost leak?

 

I had my car shipped to imagine auto with Steve Casper and I am certain it is producing the power maybe plus or minus the 690 but close. Maybe the 690 race program will not produce 134mph on the San Antonio race track.

 

Have you dynoed the car since it was returned to you from IA? If you have not, then there is absolutely no possible way that you can be 100% certain of how much power it's currently making. A car truly making 690 flywheel HP will hit 134 on San Antonio reacetrack. It's a IHRA certified track at an elevation of only 625' for godsakes.

This has nothing to with IA or Stephen, as he's an outstanding tuner. But for all you know, you could have a boost leak or some other easily remedied issue that's causing you to lose power in your car. Issues like that are quite common with highly modified cars, regardless of who built/tuned them.

Trust me on this. I've owned a few heavily modified cars over the years. Pretending to be certain that your car is running at 100% of its potential when certainty is not a possibility, is not beneficial to you, your tuner, or your car. I would get it dyno'd ASAP. If it dynos in the 570-600 awhp range, then it's probably your driving that caused you to trap so low. But at least you'll know for sure.

 

I am going to make some more runs when there is no wind blowing and then I will look for that. I do not think it is a boost leak but it may not be producing the power. The question is what top speed should the car do. I guess you are saying 134mph.

 

my friends 996 turbo ran 110mph and his 996 turbo s ran 113mph so I thought 130mph was the limit. I am suprised to hear 134mph with the power I supposedly have.

 

Let me give you some better points of reference:

-Bone stock 996TT's have hit 117.

-Bone stock Turbo S's have hit 119.

-Bone stock 997TT's have hit 121 mph.

-My car at IA Stage 2 (intake, exhaust, tune), full weight with AWD hit 126.

-My car with 675 flywheel HP and RWD hit 136 and Woodtster's car with the same power but AWD hit 134.

With a true 690 flywheel HP, you should be hitting *at least* 130 mph.

 

My be there is some porblems with his ECU..cause of diff weather or climate (was you ecu tuning done at the same place and all aspect tken into account)...I had this problem on other car...had re-programm my ECU to ge best results..thus resulted in 0.2-0.3 drop in 1/4...not sure about trap speed but definately car pulled harder on top...

 

I believe I could hit 130mph but not 135 on my AWD TT 997. My friends AWD 996 turbo ran 110mph and his convertible AWD 996 turbo s ran 113mph on the same track over a couple of runs. I just need to dyno my car. I could not dyno it because of new clutch. Imagine Auto with Steve put on the clutch, Evo intercoolers, boost hoses, Awe Exhaust, ECM tune with race program, brembo brakes and bilstein shocks. I also have champion wheels. Car runs great and feels good. I need to make more runs. I could not get my car in the 11s on the day I ran 125mph. My friend ran my car on a different day which is part of this post but let up a the end; however, he ran an 11.7 time his best ever.