Ok im running the Hiboost kit at 8lbs with a stock exhaust system. I was tinkering with the thought of gettin a complete DP-back catless exhaust system before Juan comes down to tune the car. How much of an increase do you guys think I'll see from this mod?
>> 2.5 str8 back with no cats and my HKS muffler?
>> 2.5 str8 back with no cats and my HKS muffler?