it may not be your clamps, i looked at your pics and you are still running the Weapon-R couplers? if so that is your problem they blow, i had them on my secret weapon intake and it never seemed to be right until i bought better couplers from siliconeintakes.com. made a huge difference, turns out the couplers i had were leaking and i didnt notice so that is probably your problem. they are too thin and too flexible to be effective. buy better couplers from siliconeintakes.com. much better quality than what came with your hardpipes