Sorry to bring up an old thread, but does the HR y-pipe have any effect of an 05x. I wanted to get one until someone said the y-pipe on an X might have some clearance issues and that it looks the same.

Has anyone actually tried to put it on an X and noticed similar things?

I put the Hr y pipe on my 04x and at fit fine, and i noticed the same results as everyone else on it, felt like it smoothed out the revs n made it a little less "boggy".

Ima take off my borla and sell it well already have like 5 people feenin for it lol.

I have g37 Y pipe, and im thinkin about doing custom midpipe with magnaflow resonator, and maybe hks rear? hmmm

hey what if i leave my stock y pipe on would that make a big difference?

Woah way to resurrect the thread... Anyways it depends on your model year but it won't make a huge difference