well i finally did it and not happy. Its really loud with some raspy to it. people are telling me to get a bigger muffler cause the injen muffler is really small. has anyone else done this or something similar? does anyone have any suggestoins on how to get rid of this? help!!

 

i'm interested to see how much more hp/tq ppl are making by adding custom mid pipes. doesn't seem worth it. i've talked to ppl at greddy and at local muffler/race shops and they all think the stock midpipe is sufficient for NA use.

 

the midpipe? aka s-pipe/downpipe?