Matt Alexander

hi i was at a drag racing event today in cumbria with my 323i, i was running consistant 15s best been 15.47 but i just need that exstra little bit dose any one have any ideas with engine tuning n what the best way of doing it what kinda bhp can i get out of one of the 323 (im a machanic so im quite handy) with this been my first bmw i dnt no many trics with them, any advice would be helpfull thanks