Will I lose a lot of power if I go with a custom 2.50" piping all the way back BUT into a 2.25 muffler? will I lose a great amount of power? How will it sound? the muffler is an ES Oval btw..that **** sucks...OR am I better off with going with a 3" piping with a Apex Turbo N1 muffler? Is 3" needed for a SOHC boosting 6lbs?
-ThanKS

 

It's always better to go with 3" exhaust piping when it comes to force induction.

 

what kind of turbo is it? if it's greddy, you should be ok. if not....ahhh just get the 3 inch with apex n1 muffler.