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Spark plug Denso or OEM Volkswagen
Reviews
After I replaced mk Denso Iridium IK22's with the bosch coppers the problem disappeared. It looked as if the electorodes on 2 of the Denso's were oddly eroded and were probably causing a misfire.
Pros: problem disappeared
Cons: electrodes oddly eroded
Part number: IK22
I was useing the Bosch +2's for about 4 months and switched them out for the Denso Iridium's, could definitely tell a difference.
Pros: noticeable difference
denso iridiums - changed to these a month ago, and car feels more responsive and smoother
Pros: more responsive, smoother
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