ok i was at indy bash a couple of weeks ago,and bought this exhaust from a vendor there for 15$.its universal with a chrome tip which is 5 inches( i measured)and the rest of the canister is flat black.buttt.....the inlet is 2 1/8 inches.i want to put this on my car but i was wondering if neone agrees that if have 2.5 exhaust from the axle back,then it goes to the 2 1/8 inlet.wouldnt this cause back pressure,for more HP. anybody know if thatd be true or not true. j/w before i out this on my car.
