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Who can explain why VAFC/SAFC advance timing?

Old 04-29-2003, 05:09 PM
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Default Who can explain why VAFC/SAFC advance timing?

We have several electronis and computer engineers at work and I was explaining to them the VAFC/SAFC hack, but I couldn't explain why it advances timing.
I need to know details.
Thanks
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Old 04-29-2003, 05:19 PM
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Default Re:Who can explain why VAFC/SAFC advance timing?

I could be wrong(wouldn't be the first time), but I think it is because since the AFC is taking away voltage from the map, the ecu thinks it is running lean all the time, and to compensate it advances the timing. Where is Joseph to correct me?
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Old 04-29-2003, 06:32 PM
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Default Re:Who can explain why VAFC/SAFC advance timing?

I dont think the AFC hack messes with timing. I think the computer does that automatically no matter if you have on the AFC Hack or not.

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Old 04-29-2003, 07:06 PM
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Default Re:Who can explain why VAFC/SAFC advance timing?

True, but the ecu is advancing the timing due to the fact that the AFC is "hacking" the map signal and telling the ecu that it is running lean. The AFC itself does not advance timing.

Where the hell is Joseph??
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Old 04-29-2003, 08:31 PM
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Default Re:Who can explain why VAFC/SAFC advance timing?

Read the sticky thread at the top, "The truth about the AFC boost hack"
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