I am installing my x pypes off road tomorrow to match with my Borla Cat backs. can someone inform me should I losen up all the bolts from back to front or will it go in easy just taking off the stock pipes from the headers to the cat backs. Also will I need to re-tune since the o2 sensors will be there with out the cats????

 

Randy the only thing you should have to do is take off the old h-pipe and there will be enough slack in there for you to put on the mid-pipe, just by moving it all around a little bit like you said. As far as it being an offroad pipe you will need to either get MIL's which cause the engine light to not go on other wise your car will bog out after a short while or you could get a handheld tuner and turn the o2's off which acts like the MILS would. Hope this helps Dan-

 

Its only 6 bolts to loosen and tighten back it took me about 2 and half hours to change mine. The hardest part was getting the car jacked up and getting all the tools together.

 

I finished installing them about 2 hours ago. Awesome sound REAL LOUD these X Pypes are. I drove about 40 miles and I did not have any buzzing sounds and also no Check engine light came on. I feel some extra power and love the sound on down shifts, Rumbble is nice. Sometime next week will get with a tuner and have the overlook the specs. I did not see a tune posted anywhere for adding X Pypes. Does anyone know if there is a tune for Diablo or SCT 2 ??? Please infom me on this.


Loud and Proud!

 

You don't need a tune with the X-pipe. It won't change your A/F that much (If it did you would be throwing codes like crazy).