This is a strange one. After driving the car with the HKS spark plugs, I got hesitation on full boost randomly that wouldn't go away.
I then removed, re-gapped and checked them and it was no go. I had had enough....I cleaned the "original" spark plugs, checked the gap...it was the same. Put them in and car runs sweet. I give up. The stock ones are staying in so I can drive the car and have a think....and re-measure!
I have it down to an art form now removing the plugs. An hour to do all 4! Not bad on a boxer engine!
I then removed, re-gapped and checked them and it was no go. I had had enough....I cleaned the "original" spark plugs, checked the gap...it was the same. Put them in and car runs sweet. I give up. The stock ones are staying in so I can drive the car and have a think....and re-measure!
I have it down to an art form now removing the plugs. An hour to do all 4! Not bad on a boxer engine!
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