Looking to get some new spark plugs for my 2.2 that is now supercharged. Now here is my question to the community.

I am looking for a 1-step colder plug, pref copper and is also taper seat.

I suppose I can run platinum or iridium, but it needs to be 1-step colder/taper.

Please help me and post some part numbers (ie pepboys, o'rielly auto, etc)

Much thanks!

 

Ngk 4644

 

Why do you want to run a Copper plug?

I would go a 1 step colder NGK iridium plug

 

^ this.

 

I only had 19k miles when I bought my SS/TC last month and switched to ngk plugs one step colder and made a difference in mileage not sure about any real power gain. Ngk makes great plugs we all use them in our ls1 motors as well. Never had an issue with them.

 

part numbers?

 

Probably going to go with LTR6IX-11 which are iridium, and tapered seat.