Far as I was aware in the RA BC5 the internals were forged from factory, is this incorrect?
Ive had a few VF10s running 20psi that didnt blow before the bottom end did
also had a few VF8s running 20psi on standard everything with nothing blowing up LOL
This was back when BFs/BCs were a dime a dozen
I also had the popping and farting problem - had me super stumped fixing lots of stuff that didnt need fixing
Curious if you turn your boost up past 12psi does it still pop and fart?
My RS saw 25psi on 1 occasion when I had the external wastegate hooked up wrong, and yes it would have been terrible on the engine but it ran flawlessly even at 25psi - no hesistaion or popping / backfiring (I had a chip so boost is no limited for me)
When I turn it up past 16psi now it pops and backfires, bloody annoying so I just leave it under that and it goes sweet. still abit concerned there might be something small wrong however
Dunno what a W8 runs But ive got a W6 with TD05h and runs tight now I replaced everything on the ignition system
Have a HKS downpipe and full stainless exhaust, sounds tits and hauls ass
Z4 also good but not as cool as a W6
When you upgrade your turbo do the ECU as well and youll be away no sweat