hello all. running 4x4saph 320bhp 803,s 20psi hybridT3 currently using motorcraft pp8,even though the car idles and runs fine been told i need different plugs could anyone suggest what would be better,many thanks.

 

motorcraft 071's m8 finis number 1120834 gapped to 0.6mm.

 

STOP right now, you will kill your engine on these plugs at that power.
Either as said or better still IK31 plugs 0.6mm gap.
PP8 only good for stage one or std, way way too hot for anything more.
tabetha

 

thanks for advice 071,s on order £2.50 each bargain alot cheaper than pp8 and better for my engine, thanks again.