Hey all. Just installed a new Borla ATAK catback on my 2012 GT. Install wasn't bad at all, with the help of a friend and a few beers. Only issue was getting the tips aligned straight, centered and even in the back recesses, but even that was made easy the way Borla designed this setup. I took some pics of the old and new systems for comparison. Definitely check out the old H-Pipe pic. Notice the size difference. Also, the Borla mufflers seem to weigh aboot half what the stock mufflers weigh. The sound is very good too, very tame at idle, roaring monster at WOT. No drone in the cabin at all. Enjoy!
The resonators have some kind of indention in them, from factory. Also there's a choke point before and after them. Total pewp.
Notice here that the Pipe goes from 3" to 2 1/2", back to 3". Totally restrictive.
The resonators have some kind of indention in them, from factory. Also there's a choke point before and after them. Total pewp.
Notice here that the Pipe goes from 3" to 2 1/2", back to 3". Totally restrictive.