Originally Posted by
HairyDave
Ah. If it's he re-circ, then I have a wee problem. I fitted a dump valve and put a one way valve into the re-circ vacuum line. The noise only appears when the engine revs to about 2000rpm and I lift off. When I do the same at 3500, the dump valve works. However, I have noticed the dump valve seems a little weak and just put this down to low boost pressure. I'll go and have a root around and see if things are still plumbed in properly.
Smithy, 15% more power and 30% more torque sounds good to me! But could I just put a Manual boost controller in and simply turn it up? I don't think my engine is the strongest, and need it to be reliable, but my bro has got a little fiat coupe, but despite being a hairdressers car, it's pulling 350bhp on the dyno and is ££££in' rapid and I wouldn't mind at least keeping up with him!