I have a question i think no one really thought about. Its that if you install the dual tip with no muffler kit, doesn't that kill the aero of the under body? Because from what I see, the exhaust let the air flow from the exhaust to the rear diffuser. Anyone else notice this problem?.. Or maybe there a solution to fix it? Thats a really big gap for air to swurl around in there and cause unnecessary drag?

 

And what class of racing do you do?

 

Is this an autobahn car, or autocross car. If not your wasting time.

 

If there is any drag at all it won't be enough to counter-act the 15whp gain from the exhaust.

 

There are vents in the middle of the diffuser near the license tag spot that vent out air that builds up. You might have a point, but I wouldn't worry too much about it. I like the way that cobb's system is looking so far because it retains the typical muffler design, and probably flows about as good as a straight through design as long as the internal section is designed right. We'll see I suppose.

 

i 'm sure they will make some kind of rear diffuser soon. Make sure, if you get an exhaust, try to get place it, as high as you can on the hangers. So big no for those low hanger types.

 

Drill holes in your bumper! ahahaha

 

or go thru the trunk. I like that. those set ups looking sick. dual tip on the trunk between the lights !