Bosch plugs are ok with the magnum engines. Champion Gold truck plugs
seem to make it idle better. No real performance increases. Have you
added an ignition box and coil?? If not, try the Crane Hi6 with their
92ss coil. digital set up and get response.
DMH wrote:
> I am thinking of swapping out my spark plugs and am
> looking for input. I went back thru the archives and
> saw where some people tried the platinums with mixed
> results. Also many with champion truck plugs. I have
> run splitfire in other cars before and honestly didn't
> see any thing great about them. Are the Champion
> Truck plugs decent performers? Should I look into
> some type of splitfire type plug?
>
> TIA
> ===
> dakota_59_rt@yahoo.com
> 1998 Dakota 5.9 RT
>
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