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Ok, looking to have remapp and looking to boost around 17psi, what dump valve should I go for, do I pay loads for a fancy wooshy one that I can adjust or say a simple non adjustable forge recirc one, or stick on a second hand STi or P1 dump valve and pay alot less.
nothing its just that you read on this board that the standard dump valve is not so good once you start uping the boost.Im no mechanic so looking for sensible advice on this urban myth.