2007 Corvette Z06
I recently purchased a bone stock 2007 Z06 3 months ago. I'm loving the car, but have caught the bug to start doing some minor upgrades. So far, I have installed a Halltech intake and am scheduled to have the heads worked and a dyno tune in the beginning of August. I installed the Mild to Wild switch and feel that the car sounds decent with the valves open, but I still find myself wanting a bit more volume. I've been looking at a few axle back and cat back exhausts. So far, I've narrowed it down to the Borla Atak axle back, B&B Bullets axle back, LG GT4 axle back, Hooker Blackheart axle back (both with and without mufflers, and the Magnaflow Competition cat back. Of the ones I have listed, which would be the loudest? Will they be significantly louder than the stock exhaust with the valves open? From personal experience, do any of these drone a lot more than the stock exhaust (I notice a bit of droning between 70-75 with the stock exhaust and the valves open, but it isn't enough to drive me crazy). Will they provide any power increase? I've heard that a cat back or axle back is really just for sound and not performance gains. Also, how difficult is it to remove the stock exhaust and install one of these on a C6 Z06? I was able to install the Halltech intake without any difficulty and have ramps, jack stands, a socket set, and torque wrench. Thanks ahead of time for the help and information!