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Discussion Starter #1
hello, just wondering which plugs would be good for my car, it's pretty standard, i have done a couple of searches but can't seem to find anything....
cheers for any help...
 

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are these also good for stage 1 engines ? say up to around 400hp ? or do i need to go colder then
would like to know this too as mines stage 1 with 400hp ecu with BKR8EIX and has a slight missfire at 4500 rpm+ (dont happen all the time)
oh and ive still got stock coilpacks in aswell.
 
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