i have a 1990 lx with a cobra intake E303 cam cold air intake 65mm throttle body i drove the car tonight for about 30min and i noticed when i got home it was smoking out the left tail pipe not a lot but some blue smoke i did not start smoking until tonight i just put the cobra intake and the E303 cam i ran the car 3 or 4 times before just idling and reving and it did not smoke before just started tonight what could it be valves because of cam? or pistonring stuck?i have only had the intake and cam on 3 weeks would tempature outside have anything to do with it the tempature is -2 with a wind chill of -15?