is it cuz it was ebay and not name brand? i dont make enough money to put aem on injen on my **** so yea... it was bout the only thing i can afford which wit my truck im gunna get the best brand i can get .. and im also gunna see if my uncle will try and help me run a headerback exhaust wit 2 high flow cats and 2 magnaflow or flowmaster mufflers cant decide which one yet