Hi wondering if anyone can help ?
i have series 2 RST and was running fine before and had front end crash its since had whole new front end new rad new intercooler,
now after it was put back together had loads of trouble trying to get it to run correct timming was out and air fuel was way out its now set at 2% and idle fine i can drive the car but as soon as anysign of boost the engine starts spluttering and then sounds like only running on 3 cylinders then it will clear as long as revs are kept below 3000rpm at first i did find that from the accident the actuator bracket had been hit hard and the acctuator was holding waste gate open so adjusted that and that has made it worse as now it will boost to 15psi if i keep my foot down but it will cut right out then back in and splutter and run rough ive run out of idea as ive renewed everything and still cant sort it ?

could the turbo be cracked it was brand new before accident
thankyou in advance
andy