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    Side Gaping Spark Plugs etc.

    You can get more out of the car by side gaping the plugs. ( http://performanceunlimited.com/documents/plugsidegapping.html ) ( http://www.angelfire.com/me4/dugbugwap/images/SplugMod.JPG ) I have used these in a 03 Protege DX. I used ZFR6F-11 like that & the BKR6EK types but the BKR6E-11 are...
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    Sparkplugs options...

    I have used many spark plugs in my 03 Mazda Protege DX. I was wondering how they worked for you. Out of all of the bunch I came up with the best as in. NGK BKR6EK ( Needs better octane 89 - 91 ) NGK ZFR6F-11 ( Needs better octane 89 - 91 ) BOSCH F8DC4 ( NON-Resistor Needs better octane 91+ )...
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