grounding on stock SR coilpacks suck...you may want to considder ordering a grounding coilpack cover from Phase2motortrend (easiest way to do it...its plug n play)...on one of the shop cars we were having misfire problems with a redtop...we created a grounding plate kit for the motor and it smoothed right out...u may want to considder this before u start swapping out injectors or tearing apart wiring harnesses...its a quick and cheap fix...even if its not the problem...it does help greatly when u start producing higher numbers in horsepower
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