Borla doesn't actually make it...DMH Performance makes an electirc cutout for the Borla exhaust.
http://www.dmhperformance.com/

 

i thought i'd let you know, i'm now running headers, ORP, and then a hooker catback, and i love the sound. Alot of the rasp is from not having a cat, but the borla muffler still sounds a bit raspy either way. All i can say is with the flowmaster i had, it sounded like total crap, but the hooker catback seems to be just made to be used without a cat cause it sounds great.

 

My car has Hooker LT, custom 3" Y-Pipe, 3" to the rear with a 1 chamber Flowmaster-single inlet/outlet...sounds awesome