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Originally Posted by rev9k
I don't see the reason for the extra Blow off valves, esp @ only 11 psi. (still don't get why the new AA kits use 3??)
One should me more than sufficient.
I have no doubt your still using the shitty OE clamps on the iTBS and that's whats causing lifting of the mani under boost. I would have prefered a brakcet to hold down the intake or better clamps (think t-bolt) on the ITBS if you can fit them.
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I hear you and use to feel the same way, but the single Vortech bypass is not sufficient in this case, a larger Tial type BOV might do the trick, but I can't stand the noise. We tried different clamps, that's not it. There are only a few cars in the world running 11+psi the majority of them have had this issue. AA actually runs 3 BOV's and one bypass valve, Evolve runs two BOV's. When you go to 13psi you will need a bypass valve on the rear ICV hose to relieve some of the pressure or it will throw a code, and go into limp mode. It appears the third bypass valve in the front has done the trick. I never had an issue with spirited driving on the street, but that is because I don't hit the speeds I do at the airstrip events.
