Spark plug recomendation?
Spark plug recomendation?
With my mods on my car(HKS hipower, JIC DP, Helix High flow cat pipe, Walbro 255 pump, Turbosmart MBC 21PSI, JDM EVO MR DV) which spark plug do u guys recommend. Cleaned out my intake manifold due to the RPM raising after shifting...and im sure my spark plug is getting messed up..so which 1 do u guys recommend?? thanx


