[nonovurbizniz]

This is based on my experience.

I was going through plugs like they were free. My internal coil was shot so i got an msd external coil and a msd modifier cap.

it put almost an end to the pinging.. stopped the sputtering (a mechanic told me my clutch was slipping (he was wrong))

Give it a shot they don't cost much I may even have the one (modifier cap he'll still need an external coil) he needs for sale.

Or just get a new stock coil.

could be something else though