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Discussion Starter · #1 · (Edited)

I installed my street unit edition turbosmart bpv , it makes a metal clap sound when you give it a little rev while idling ? more noticible with stock air box on . so I took the turbosmart off and pushed up on the valve and let it go that cling sound thats exactly the same sound , should i be able to here that while it's on the car and is it safe ?
i contacted su they said they had no idea . :argh 1:
and it holding boost really well .

so should i put my other spring in the one for 18-25 psi ?

second i noticed today that its giving me surge when shifting in lower rpms but higher rpms shifting its very quick and has that nice loud swooosh sound ..
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