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Thread: Base Spark Maps Inverted?

  1. #1
    torc55 Guest

    Default Base Spark Maps Inverted?

    I'm not understanding why the spark maps are advanced at idle and retarded at WOT. At first glance, it looks like all the base and custom spark maps are like this. I reversed this trend for my car and it finally starts and runs well.

    It does not appear that there is a separate learning module for timing. Probably too difficult anyway...

  2. #2
    Join Date
    Dec 2009
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    Default

    Engines can tolerate more timing advance at idle & lower MAP kPa regions of the Timing Table.
    The Base Timing Table has nothing to do with starting the engine; see "Cranking Parameters - Timing".
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

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