As the title says, recently rebuilt my turbo, and since refitting it, the turbo won't boost above 7-8 psi. Its the LPT turbo, and as standard boosts to 5-6psi. I have an mbc fitted, and before the rebuild it was boosting to 10-11psi. It also seems to take ages to spool up, and its louder than it was before, but I'm putting this down to the new seals and bearings.
Is there a wear-in period?
Just want a list of things to look for (obviously I've already checked all the pipes for leaks). Could it be the wastegate? I've had the CBV off and checked that too, but it seems to be ok.
Cheers
Bomb
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