Car was tuned by Gary Capper. I bought an adapter loom from another company to go from the Ver5 loom to the G4 at the ECU end, but it never came with a wiring diagram or anything and when I checked over the wiring there were a few things wrong with it anyway, may as well have done it myself. Re-wired the engine side of things myself (Ver8 engine to Ver5 loom), also AVCS, boost solenoid, air temp etc.
If I did it again I'd probably not do it this way, was a lot of mucking around going from Ver8 engine to Ver5 loom to G4 adapter loom and then separate loom for AVCS. Probably better off making whole new looms and wiring the engine straight to the G4. Would be super tidy this way as well.