used these literally for less than 200 miles...my car started having misfire issues during cold morning starts and occasionally during a prolonged idle...switched back to the stock coilpacks and no more misfires so my ECU doesn't like them...
$150 for the entire set, (four r8 coilpacks, four 034 adaptors, and stainless steel hardware for adaptors)
i lost one of the bolts for the coilpack adaptors when i was removing it and it fell somewhere inside of my engine bay, i can't find the damn thing but if you call 034 they will send you a replacement screw which they have done for me in the past...

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