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  1. REXPEED: Performance Ignition Coil for 2000cc & 3000cc models.

    Can you please share all the data for these? Spark testing, at different dwell times vs stock. Power output vs stock, etc, etc. Would be interesting to see. Here is a table from other independent testing on some other popular BMW coils vs the B58 coil. If these make more spark energy, we would...


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