Do any of you notice a difference when running a single exhaust? Im a bit worried about creating extra drag since the oem muffler works as a diffuser and theres a huge gaping hole when u remove it lol, thanks in advance.

 

Not much til after 100. TS rear diffuser cures this.

 

Didn't notice a thing, then again i have a bumper tuck . The bumper thuck should cure the potential problem.

 

Same, bumper tucked, plus there's so much weight saved with a titanium single over oem, the car felt so much zippier, and gas mileage only went down a little.

 

Weird , my milage went up.

 

Put on headers hfc's and y pipe with it. And I dont drive particularly conservatively..,

 

Thats the part, my car also has headers, y pipe, and sometimes test pipes. I get about 2 mpg better on the freeway with test pipes.

 

The problem isn't so much extra drag (it might knock a few mph off your top speed, but when are you going to be doing 160mph?) but rear-end lift.

I have a single exhaust, and even so, the rear end only gets light above 140mph or so (and even that is a speed I don't see often). IMO, at the speeds you're likely to see on the street, drag strip or anything but the fastest road courses, you'll see more benefit from the weight savings than you'll see detriment from the drag/lift.

Tuck your bumper if you're worried, or throw a diffuser/undertray on the car, but really, who cares about a few more points on the Cd?

 

This concern is only for a picky person. It really won't change much. I agree with the others have said.