S2000 Under The Hood S2000 Technical and Mechanical discussions.

Question about VAFC Tuning

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Old Mar 3, 2002 | 11:18 AM
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From: Aurora
Default Question about VAFC Tuning

Is it possible to change the settings of the VAFC when the engine is running? The manual doesn't say anything. I am currently entering the numbers and then starting the car. Any help is appreciated.

Thanks
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Old Mar 3, 2002 | 06:02 PM
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i too would really like to know this!
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Old Mar 3, 2002 | 07:02 PM
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Yes, you can.
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Old Mar 3, 2002 | 07:05 PM
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Wes, so while driving, you can tune the AFC and the corrections will be made instantly? I am wondering because I installed the AFC a few days ago, and haven't gotten it tuned yet. I was told to put the umatch at -6, and for some reason, the car doesn't really move the same as before?

Nick
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Old Mar 3, 2002 | 07:50 PM
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I haven't even had a chance to drive my car yet. Denver got slammed with snow this past weekend and the weather has not been the warmest lately (as you can see from my banner).

Pappy, just courious what you used as a base setting.
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Old Mar 3, 2002 | 08:28 PM
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Originally posted by Pappy
...the car doesn't really move the same as before?
I wouldn't drive the car without having it set up by a tuner. I had a Houstook set mine up, he mixed up a setup setting and I went through half a gas tank in 50 miles on my way home...and the car was slooooow. I have tuned my V-AFC while driving, it's impossible to feel if it takes impact "immediately". But logically, there's no reason why it should not. All the V-AFC does is change the air flow pressure by a percentage...there's no need to turn the car on and off for it to change this.
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Old Mar 5, 2002 | 11:43 AM
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Thanks Wes
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