sup yo. i need help on my motor.. i did a obd1 ls motor into my 99 civic coupe.. and its not running right now.. my motor is misfiring when the engine is cold.. it misfires at low rpm.. like from 1 to 3.. and my motor is laggin wen the engine is cold.. it laggs on low end.. same as misfiring.. but after runnin awhile.. the motor runs fine.. can anyone help??