im not sure how its set up, as i said its a m8's. hes had a new -31. the turbo is also new. (new to him, second hand off ebay)

it has been running fine for the last couple of weeks, but now and again it wouldnt come on boost. he took it to a tuning company near us and there verdict was.....the turbo wont produce no more than 8psi.

i havent spoke to my m8 in person about it, just in txt as hes been at work.

the company he took it to havent really got much good feedback but he was deperate to get it sorted quickly