Originally Posted by rjd598
I'm surprised no one mentioned this but you are way off on your costs. It will cost MUCH more than $1600 for tune, xpipe, pulley, and drop in filter. To give you an idea tunes are on average $1k and xpipes $1500-2000. Look into ess supercharged their entry level is 535hp and it only costs $8k. Best bang for buck if you ask me. Eas just showed a dyno of a 535 equipped e90 m3 pushing 480whp. Damn impressive for the price
.......an xpipe is 1500-2000. WHY.