Purchased a bf xr6 turbo couple days ago for dirt cheap , owner did say mechanically a1 , took it for a test drive hit boost , car spluttered and backed off , owner at the time went purple faced and said iv never stepped on it for ahwile I dont know , kinda true kinda not yet he was a elderly bloke , I purchased it anyway always wanted a xr6 turbo , using it for 2 days now iv relized it moves alot harder then my my uncles ba xr6 turbo before it hits cut out of some sort , after a couple times of hard boost and it cutting out engine light came on , Today got a boost gauge hooked it up , got my brother to hang on to it and boost hit up to a high as 11 psi and I backed off as I didnt want to do anymore damage if I have done any , Please some one tell me somewhere to start ???????