A couple of weeks ago i purchased a fiesta rs turbo which had a blown gearbox. I replaced it this weekend with a series 2 box so it would give me the benefit of having a LSD. Anyway, heres the problem..

Now i've finally got it on the road i've found out that when it comes on boost and hits 15ish psi it cuts off all power??

I've been told by a mate that this is cos it ain't chipped? Is this correct?

I don't know anything about whats been done to the engine as it only came with FSH, no receipts. It has got a bleed valve which is screwed down as far as it will go which is weird cos its still reaching 15 psi??

Anyone know why its boosting so high and is this correct about the chip? Any suggestions?


Cheers, Craig