alright when it gets cold outside. like 40's or colder. my car runs terrible. sometimes when i first start it up in the morning it will run fine till i start moving, then it starts kickin and poppin. i started it up 2 nights ago. it was below freezing outside. it started and ran, i turned the heater on. still ran fine. then i turn my wipers on, and it started missin and popping. i turned the wipers off and it ran fine. turned them back on and it started its crap again. so i turned the heater off and it ran fine. i just replaced the fuel pump about a month ago cuz the last one went out. i have not replaced the fuel filter. do not know how old the battery and alternator is. i have the egr installed but i have a egr code settin off when i am cruising. and idle it does not light up. i have headers, with no cat and 3in. exhaust to flowmaster. thought extra info might help. also running stock tune. i have tried HEET also. thought maybe there was water in the fuel. symptoms still there. worse sometimes than others. it doest always do this either... sometimes it starts and run like a champ just a small flat spot in the acceleration. i also have 305 tpi heads on it.