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Originally Posted by Simple3
I've used rockauto coils on my n54... no issues when I had misfires. Rockauto is legit. Definitely order from them. Good luck dude. Your coils were probably on the way out and the stage 1 pushed them over the edge....
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Ya I had a feeling either coils or plugs would go when I put the chip in.
Which coils would you recommend , the Bosch or SMP ?
Took chip out, car idles a little rough, but check engine light is gone and power delivery is smooth again