Im currently putting the engine in my sig in my car. I have two questions.
1. What plugs do you guys suggest?
2. Do i need a tune and if so should i get s dyno tune or just a mail order.

I have an xcal 3 handheld.

Thanks,
Greg

 

Autolite 103 or NGK TR6 (they are the same really)

Dyno tune for sure, email tunes are a best guess is all.

 

okay thanks nick what about the like type? I know ngk has the v power and the other crap. What would you suggest?

 

Cooper Cores

 

im runnnig it n/a right now can i still run the tr6s? Arent they a step colder?

 

Read my article on spark plugs, I would link it but that seems to be a no no for me around here.