i changed the plugs the mis/backfire went away... still has smoke coming off the exhaust mani tho.. i ran it today for 30 min and then changed the oil to get out all the shit in the engine. drove it around my neiborhood... it was running hot on my temp gauge got close to the warning dash BEFORE the red and i shut the car off and found that biran and i forgot to plug in the radiator fan.. drove it for a few more minutes then parked it... its making a wierd wining noise like a belt is loose (prob the ps belt) or air is escaping some where and making the sound.. but in all its running good with the changed plugs i have 4 miles on it now i just need to get my logger back hook it up log it and break it in... oh Jordan Y thanks for the link... so basicilly i need to keep the engine at higher rpm w/o boosting it thats what im guessing anyone else have any input on the breakin process