i was planning to replace my spark plugs, just because and i'm planning to get a osiris tune as well

currently my car has plenum spacer, z tube, jwt intake, catback exhaust, and i'm going to be installing my high flow cats soon as well.

so my question is, is it worth it getting plugs a level hotter for NA? or should i just stick with regular ones?


thanks!

 

Regular. There is no real reason for a hotter plug unless you are cold year round and your car never sees high RPMs.

As long as your car runs at normal operating temperature and the current plugs aren't carbon fouling then there is no reason to step up. Some people in hot climates and FI guys step down.

 

yea i' was misinformed about the heat ranges for plugs

i've decided to stick to the stock heat range.

thanks!