What Spark Plugs??? HELP!!!
 

Man, I need a lot of help lately...now it is plugs.

I have a blower and TFS heads. I can't seem to find the right plugs. My car WILL NOT cold start worth a crap....it will start, pop, sputter and die. I have to sit there for 5 minutes and feather the throtle to get it warm enough to run...it is only 30-35 in the morning.

I used to have NGK FR 5's gapped at .35. It would start ok, but when I would drive it, it would pop and backfire sometimes at about 1/2 or less throttle at lower rpm's.

I decided to switch to a different plug. Now I installed NGS B9ES gapped at .35. It is worse than before. This is what I was talking about above...but it pops and backfires almost everytime.

Any suggestions? Do I need a colder plug? What about Gap, what Gap should I use? I have heard some using .45, but I have been recommended .35 for some reason. What plugs are you guys using?

Autolites...
 

3924's...do not use platinums either. Just straight up 3924's are what tfs calls for, at least twisted wedge heads. 35 thousands...