hey guy i got a 1991 blaster all stock. and you know the original pipe where it slips into two, there is that rubber piece with two clamps holding it down, well there is a hole in the rubber piece that i just realized yesterday through the hole i can see another hole. im not sure if its just the two pipes that split or a hole in the exhaust. well let me tell you it sounds better lol and i dont know if its me but it feels like its got more power now?! my main question is, is leaving that hole or whatever it is good or bad for the engine. the hole is not on the expansion chamber so i dont see why it good be bad, thanks guys !!!:S