2004-2007 Cadillac CTS-V Performance Mods Discussion, Borla has a new cat-back exhaust in Cadillac CTS-V Series Forum - 2004 - 2007; Borla has a sweet cat-back system now. I let them use my car to design the prototype. I picked up ...
Borla has a sweet cat-back system now. I let them use my car to design the prototype. I picked up my production system from them a couple of weeks ago. It fits, looks, and sounds great as Borla is known for. It uses an x-pipe design and has five inch diameter tips. It is a little bit louder inside the car but it is not bad at all. I have had four Mustangs with different aftermarket exhaust systems and this is much quieter than any of them could ever hope to be. It gives the car a meaner growl but still retains the refinement. It really sounds great at WOT. They asked me not to post the HP or TQ gains but suffice to say I was very, very impressed with the increases shown on the dyno. There is no binding, creaking, or rubbing.
If you are interested in the system, call Borla (877-462-6752) and ask them about it. I am sure they would be more than happy to answer your questions. They have not updated their website (www.borla.com) to include this system as of yet. They used my car to build the prototype and then installed the production piece you see in the pics a couple of weeks later. David Borla said he was going to call me in a few weeks to see how the system was doing. They may be holding off on updating their website until they call to make sure there are no issues that need to be addressed. They do however have the means to produce the system at-will.
I am very pleased with the system. I was afraid it might drone on the highway or elevate interior noise to excessive levels as I have experienced with many a Mustang system. This is not the case with this system. It is more audible in the car than the factory system but is not excessive in my opinion. If you are overly concerned with "refinement" forget looking at any aftermarket system. Just go buy a set of pipe tips. I am unaware of any aftermarket performance system that does not increase interior noise to some degree in proportion to any increase in exterior noise. The man who can invent such a system will be a millionaire. If you wish to increase performance and or get a meaner "growl" you will have to sacrifice some level of "refinement" with respect to audible interior noise. I am very pleased with this system.
If I get a chance next week, I'll try to do some recording of inerior and exterior noise with my digital voice recorder.