[tacomaspeed]

questions ....in theory colder plugs are for what ?
also i would like to know what everyone thinks are good plug for na and turbo applications

 

[Awizeguy4u]

step colder for NOS

 

[Guest]

2 steps colder are usually ideal for Supercharged and Turbo applications depending on the engine and setup.

 

[TacomaKevin17]

Does anyone have any experience with Bosch's Platinum +4's. I want to know if I could get some better gas mileage with em. When splitfires first came out we put some in our V6 minivan and the gas mileage went up drastically but the quality of the plugs were crap and they fell apart. Since bosch is good quality I'm wondering if I can get some more MPG with em.

 

[Awizeguy4u]

My boy runs the bosch 4's however his taco is turbo...he says they run better than NGK....i ether run NGK or toyota denso plug....both plugs are basically the same though...

 

[tacomaspeed]

i was thinking of going with the bosch( iam running a turbo ) however i have and msd 6a and was told you can not run platnium on a msd box