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Altezza555

3sge+t altezza backfire

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Hey I'm having a issue with my 3sge+t beams altezza. I had it tuned recently in Hamilton and am having a issue with it backfiring sometimes when I crank it. It will crank for 2-3 seconds then it backfires. It doesn't do it every time most of the time it will start fine. Any help is appreciated

Cheers

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Some of these engines have very low voltage from the cam sensor at cranking speed so your arming threshold table might need some adjustment.  Please unplug the coils (so it doesn’t start) and do a trigger scope while cranking.  Save as a log file and post that here.

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