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Dude, if you fitted BCPR6ES they were probably gapped to 1.1mm. Check and see if the part number is actually BCPR6ES-11. If so, I would make sure you gap them to 0.8mm before you install them again.

Remember, it is always a good idea to check the gap with feeler guages even if you're not changing it.

If you are running higher than standard boost, I can strongly suggest BCPR7ES-11 gapped to 0.8mm. These are exactly the same plug but one heat range colder. They should only cost the same as the 6's @ about $4- retail. I pay about $2.65.

Good luck.

Adrian

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Thanx for the reply guys.

I did gap em to 0.8mm before hand.

Ben

I cant remember what they cost, I walked in and pickup a few other items at the same time..

Adrian

Im boosting to 10psi but this is a miss at idle dude. I have noticed I dont have an ignition amp mounted on the coil cover near the firewall. There was never one there when I purchased the car and I had no idea there should have been one, but the car ran fine before the change of plugs..

Wonder if one of the coil packs or wiring harness may have a problem after moving them?

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Put in the old plugs agian and see if the miss goes away...

I was going to do just that. Next time a get a spare 30 min..

funny thing is the old plugs where a USA brand Autolite APP3924-11 Double Platinum... There worn out and the gap is at over 1.7mm :headspin:

Still the car ran fine as they where and managed to pull a 13.9 at WSID :)

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