I have a 2001 Gt with just simple upgrades so far. The car came with a X-pipe on it, it had a BBK front and a borla back half. since i got the car less then a year ago, i put the SCT X3 tuner on it with a cold air intake and pulleys. And i wantd to put new exhaust system on it and i was wonderin what would give me more horsepower the borla catted X-pipe or the borla cat back exhaust sytem?

 

You should base your decision on sound, but usually the mid pipe is more of a restriction than the cat back. It's not going to be much of a difference though.

 

Yeah, just go with what sounds the best. Youtube has the best selection of clips for exhaust setups. Borla does sound good IMO. If you are worried about performance with the exhaust, start with the catted midpipe, then go to the catback.

 

so it shouldnt take away horse power from the X-pipe i have on it now if i go cat back?

 

Well if you decide to sell your mufflers i'd be interested in them. But you will get more power from a midpipe change over a catback change. But you already have an x pipe on there so why would you want to switch?

 

so u think if i change my mid pipe thatll b the best thing for me to do?

 

Well you already have a bbk x pipe, which im going to assume is off-road(no catalytic converters on it) so going with a catted x pipe would only hinder performance. But if its already catted, then why buy another catted x pipe? If its o/r, just leave it be and if you want to change the sound, get different mufflers. If its catted, get an o/r x pipe and then if you dont like the sound of the mufflers you have, get different ones.

 

If u already have a bbk x pipe and a borla catback why would u wanna change... I dont understand, thats a pretty nice set up!?

 

i hav the catted ones and i was thinking bout guttin the cats and putting on a o2 simulator

 

yeah it is a nice setup i really like the borla pipes on it but i want to make it louder then what it is so if i gut the cats i think thatll work