my car completely catless with V3 (15.2ish psi) is a night/day faster than just v2 (14.1psi). My butt dyno says it, and so does the real dyno.
This weekend at the dyno will be very interesting though when i can compare it to a stock 335 on the same dyno.
Quote:
Originally Posted by XxLancaxX
So heres the deal with the xi's. Terry and I have been datalogging literally hundreds of runs. The more power you make the more timing the ECU pulls. When I ran a 12.4 I was pulling two degrees of timing, which isn't to bad but still holding back. Do not be impressed with high WHP #'s, with the xi's less is more until someone cracks the ECU. As for JB3 coming out soon, it is a RPM based tune and will help xi's because he is currently making an XI map and will have several of the "torque management" issues for the xi's resolved.  Any more than 14PSI in our xi's the car actually gets slower... Spike to 15 but hold 14 and its actually way faster than running 15-16 psi. |