Hey guys I have a 08g37 coupe with testpipes and a tanabe axle back muffler.
Will I get more gains off of a y pipe or mid pipe?

I've been searching for the last hour. Only thing I've got was the stock mid pipe has more restrictions then the y pipe. But the stock y pipe is so much smaller, so I didn't wanna just assume that was the answer.

Any help counts.. Btw I'm looking for more lower and mid range gains.

 

change both but even if you do one or the other you will not get any more gains than you already got

 

Midpipe, only because I think it's stupid to go with larger diameter piping and have the midpipe act as a bottleneck.

 

Do u have rasp with this setup ??