I also recomend advan beleive me they are not dodgy i had my car tuned from a different tuner dont think i am allowed to mention who he was but he only managed to get 170 rwkw considering my mods i thought that was crap mods are- to4e turbo external gate aftermarket top mount manifold 550cc injectors plazmaman front facing plenum bosch 300 lph intank fuel pump 3.5inch cat back exhaust pod filter fmi ems stinger 4 ecu 15psi, when i took it to advan for a diagnostic he couldnt beleive the guy let it out of the workshop with that tune so i left it at advan for acouple of days and when i got it back with 210rwkw out of my internally stock rb20det (r32 gtst) i was over the moon,
point to my story Advan are definantly not dodgy.