Carcraze28
Well-Known Member
Hi all, in the midst of choosing a f10 523. The engine being an NA I6, I know the tuning potential is rather limited for the usual basic upgrades like the air filter, exhaust. Are there any common upgrades which will help bump up the HP? Love the engine for I6, but wish to have a little more power. Hope all gurus can chime in. My other choice is a f30 328 if the potential is not there. TIA!