i have a boosted gsr hatch making 300whp im thinking about doing a pipe to the back tomorrow but i dont wanna lose power but i want it to be alil bit quiet n not smelly

what do you HT ppl think keep it 3"dumped or 3"straight pipe

lmk asap im thinking of doing it tomorrow

 

3" strait piped! it's only cutting corners when you have a dump unless your going pro!

 

put an exhaust on it, your not anywhere near the power level for a dumped exhaust

 

thanks

 

hey do i need a new tune for exhasut? it seems to lag alil