Does anyone know what the Mazda Motorsport recomended spark plug heat range for the SP is? What is everyone else using?
Cheers
SP Spark Plugs
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Thanks BD, I'm running 6's atm and I think they may be a bit hot. I'm trying to find out what the specs are but it seems like it's one of the closest secrets at Mazda for some reason.
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I put some 7's in tonight and I'll see how they go. It had 5's in it at one stage.
Around the same time it was playing up last January. I'm not sure if they were installed at the last service before I went on holidays or if the Mazda place in Albury gave me the wrong ones. It's a worry when Mazda dont even know the correct parts for your car.

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