Champion = Best Spark Plug

[Davelaf]

That's good since your soon to be Vmax has new NGK's in it.

Sean

This is an old thread, but question on plugs. With a stage 7 installed, stay with the DPR8s or get hotter with DPR7s. I think I just fouled a plug. It was tuned to a factory exhaust and I recently put a set of aftermarkets that I got with bike, smells awfully rich, but sounds pretty bad ass.

 

[Parminio]

Pal, if you are still running the Cobra pipes, there is nothing - REPEAT: NOTHING - you can do to sort that out. It will run rich, foul plugs and perform like shit forever.

The only possible fix is to get rid of those shit pipes.