Just changed mine yesterday and what a difference, it was like night and day, my bimmer was kinda draggin' and laggin' on acceleration, but I've got my gurl back, she drives like the day I bought her home in 1999. I also changed the OEM Ignition Coils as well in my 00 E46 323i I must say that this spark plug change made a significant difference. Previously I had a couple of misfire codes on cylinders four and five as well as an Ignition coil five code. Now my gurl is runnin' like a champ. Just my two and a half cents worth. Happy Motoring...
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