^ if you're going full 3" piping to muffler then you would just take out the reducer.

 

nah the only exhaust that i know that is 3inches catback it the apr and um i think there is another. his is either 2.75 or 2.5. i have the blueflame and it is 2.75 i wanted a 3in but the apr one is fu*kin expensive. i was thinkin of doin the same thing i just have to get the 42draft dp. hey just to ask did you feel a huge difference when you got the dp i heard it's as much at gettin the car chipped if that is the case i can't wait that was like nite and day.

 

The downpipe was a ridiculous difference... I did it all at the same time... downpipe, testpipe, catback, intake, and diverter valve....it was all a pretty hugue jump...put a big smile on my face...and today i had the resonator from the borla kit removed...so its straight pipes back to the borla muffler..