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Thanks a lot for sharing too. I'm curious to hear your results. Same as i mentioned above I have not been able to test the BM3 that much either but the tune is noticeable and whether it's 80, 90 or 100 HP gain, it is certainly a great tune for a Stage 1. I had a chance to speak to one of the people yesterday at PTF and they advising the following:
"If you'll be running less than 25psi of boost we suggest a 0.020" gap, or 0.018" if planning to go higher. In most cases though we just go with the 0.018" gap and call it a day. We don't suggest using the S55 OEM plugs when tuning your motors and the NGK SILZKBR8D8S (97506) have been found to be far better."
Not only based on their feedback, but as I was saying my experience with NGK and tuned engines (back since the N54, N55 days) has been fantastic. Thus I will opt for the NGK ones mentioned above.
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