im only considering trying the -34 as ive not got any more ideas of what to try next... ive got a std ex cam to fit but cant see this doing anything everything in the engine bay is new so no split hoses or intercooler im sure on a few occasions i have seen the boost go up to 30 psi but for the odd second.. all sensors brand new so maybe me seeing this was just my eyes playing up.. as they are not that new.. even got a new exhaust as i was told that the old one with a missing middle box could have been the cause..