409Cobalt07

i installed the NGK 1 step colder plug for my nitrous install im currently working on. the car stil runs great even when just riding around town

VRCobalt

I installed my new NGK plugs. They were the iridium IX plugs. It made the cold start much better. No more hesitation in the morning. Smoother acceleration and idle. BTW part # LTR5IX-11.

next thing is is mobil 1 full synthetic w/K&N or mobil oil filter

Chuck

Hey what kinda plug did you pull out of your car??
NGK plugs are awesome.. To my knowledge a iridium plug creates a more intense spark with less voltage compared to a platinum plug..

BTW you can't go wrong with Mobil 1!!!

VRCobalt

I pulled a AC Delco. I believe its an iridium plug too. When I pulled them out, there was only about 30-40 percent left on the plug. Unfortunately, these plugs dont last to long. I reckon that at about 50K miles and the car would start misfiring.