mark1987supra;1867970 said:What size exhaust piping are you running? I am seeing the torque to hp crossover point around 5000 rpm in the first graph, and around 5200 rpm in the second. It looks like you are being restricted by something up top not allowing you to make peak power. I was there @ the dyno and was wondering the same thing after your dyno.
Hey Mark
I overheard Larry saying "hes got a lot of back-pressure" after seeing the dyno graph. If I was not restricted - there was a slim chance for me to beat your 580+WHP on the board (Just joking)
I guess it may be the point where I have to replace my HKS Dragger that I got as a gift 10 years ago for my NissanSentra Not even sure what the OD is ,but it is not more than 2.7inch and my DP and rest of the pipes are 3inch.