Having a few issues with this     Got this boost problem, well lack of boost i think, car feels very boggy and hardly moves till way up the rev range. I'm certain its not an intercooler leak, core holds pressure and all pipes and joiners are solid. When core is bypassed its still the same. I've two different turbos here a VF12 and a VF10, same problem with each one, i know for sure the VF10 is ok because it ran bang on in my pals V. The VF12 visually looks perfect with no oil leakage or shaft play. The EWG is just an ebay one but its brand new. Issue is the same with o2 plugged in and also unplugged. I was using the standard 85 FPR, unsure what pressure it was so i bought a brand new adjustable FPR and the problem is still there, although i know the FPR is faulty because it wont adjust lol !!   I've got standard turbo injectors which seem to work ok, the ECU is from my GT so thats working. The ignition timing does need set but it shouldn't cause this. The throttle cable is adjusted perfectly.