hi, i have just spent alot of money on bolt ons for my my new car, i bought a rb25det with box and put it in a vl, added a heap of bolt ons got a auto elect to wire it up, after a couple of days starting it up and such was running a lil bit rough, now today, the car sounds like is miss firing, and its blowing some white smoke, the motor had been sitting in a garage for a year before being started again, please help what could be the problem and how can i fix it?