It all depends how much $ you want to spend. For some basic cheaper mods you can get a CAI, Performance chip, catback exhaust. For more extreme go F/I like turbo or S/C. I would go with the Brembo brake kit.
|AA stage 1 software| UUC light flywheel and clutch| UUC EVO 3 ssk | K&N Intake | Ebay Headers | BMWCCA member#407674 Founding member of the hit 145 mph in my almost stock 325i BMW club.