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Old 08-12-2009 | 05:24 PM
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2fst2c
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From: Martin, MI
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Hey Monty, on the P5X head buttons there are dimples. On my standard button there are 3 in a row and on the turbo's there is 2 on one side and 3 or 4 across from it. Do the 3 go over the exhaust port? Also, what is the reasoning for this? I was thinking it was for indexing the plug in the chamber but I'm not really sure. Thanks!
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