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hello there ive got a evo 8 at 403bhp and want too know wats the best sparkplugs for her ive looked at these but not sure NGK BR9EIX.
thanks antony
 

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Transmission Dynamics
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hello there ive got a evo 8 at 403bhp and want too know wats the best sparkplugs for her ive looked at these but not sure NGK BR9EIX.
thanks antony
I really don't think you'll need a heat range 9 unless the engine is running very, very hot, and at 400bhp, there would be something wrong if it needed a 9.

For a tuned E8, the R7376-8 is a better plug than an BREIX. It has an iridium centre electrode and a platinum ground compared to the nickel ground electrode of the BREIX.
 
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