wondered if anyone can help. the other day i went chasing after 1 of them bmw 330 CIs and nailed it in second think i hit the rev limiter if cossys have them then changed into 3rd and had hardly any boost. checked all the boost pipes they seem fine and also changed the amal valve and still no joy. the car now only hits about 3psi and it got me stumped cos there is no smoke or bad noises from the engine and the turbo is fine. my own fault for putting it up 4 sale i suppose. any ideas?