Coolant Comp spark adv in WinBin...

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12-22-2001, 02:01 PM

V8Astro Captain

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Car: Bee-Bowdy

Engine: blowd tree-fity

Transmission: sebin hunnerd

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Coolant Comp spark adv in WinBin...

Are these figures subtracted from the total spark advance when at that temp & kPa?

Also, in the WOT starts at VDC of TPS, I want to turn some of these UP at the lower RPM. I made a chip once where I had tried some things with this and it caused the engine to stall once when I nailed. So I'm kinda hesistant to mess with again even tho I never really proved that was the cause. Anything I should watch for?

Last edited by V8Astro Captain; 12-22-2001 at 02:31 PM.

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12-23-2001, 12:29 PM

Brent

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There is a doc over on the GMECM page that explains all the 747 spark functions. All I remember is R. Rausher wrote it.

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12-24-2001, 12:38 PM

fast_broker

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Those are EXTRA spark advance degrees ADDED to the Main Spark Table. ie, more advance when engine is cold and under rich/choke conditions. Doesn't really need to be messed with. i lowered mine a bit cause of my aggressive spark table..