[sspdw]

Originally Posted by Brett240

tuning boxes ( at keast the one below ) claim 50-60 bhp boosts. this one claims 312 bhp.

https://tdi-tuning.com/car/bmw/3-ser...uning-box-chip

PRO tuning freaks just did a 478whp stage 1 100oct run on the new supra. The new fuel system, manifold turbo and lighter crankshaft seems to give a big bump in power.