i was planning on changing my spark plugs. which ngk plugs are the best? mods are in my sig and i only plan on heads cam and intake change for my big mods

 

if you dont do forced induction or nitrous get stock heat range TR55

 

what is the differance from the tr55 and the tr6 i might run nitrous later on but i will probly not do that for awhile.

 

TR6 is a cooler heat range plug.

 

For your application, what's wrong with the O.E. platinum plugs?
You wont see a difference between stock and the TR55 NGK's. IMO.

Jim

 

The 160* T-stat only hurt your MPG's. The 160* stat is only good fo FI or medium to wild NA motors.
You will not see any hp/tq gains from doing this. How do I know, I've done it and lost 1 mpg on average. No gains in power.
I'm keeping it in because I already have a S/C to add.

Jim

 

TR55's until you decide to run the gas then TR6's

 

The TR6 plugs are a colder heat range. If you are spraying, there is no need for a lower heat range plug. The NO2 is already cooling things down.

Jim

 

thanks guys tr55's it is