im considering a BMS box only cuz of the cost. I really want to do a 3 stg manifold + aa tune but thats quite a bit of coin.
yes it will help, no its not a chip or tune. just throttle remap. idk wtf your talking about with the spark plugs......
2008 328i 6spd
1995 Z28 6spd - 377rwhp rip