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Old 11-07-2020, 09:16 PM
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Scott.T Scott.T is offline
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Join Date: Sep 2008
Location: Hastings, East Sussex
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Quote:
Originally Posted by viper1982 View Post
Scott, is the "MAF scaling" procedure very complicated to do the procedure in order to see if the value it brings is correct without having altered the diameter or anything of the intake system? I want to try doing it just out of curiosity and the intention to learn.
Easy enough to do by swinging the g/s value up or down. You'll see the fuelling shift either way.
If you can switch closed loop lambda fuelling off you could adjust the MAF scale at idle and see an immediate effect.

It can be used to cheat the fuelling. Instead of adjusting fuelling cell by cell at the top end, if you want to adjust everything by say 0.5AFR across the board you can shift it all by adjusting the MAF at the voltages that are being hit.

But your AFR values loaded in the fuel map wont then equal what you actually read on the Lambda because its being offset by the adjusted MAF. This doesn't matter for the car but for me I like the AFR tables to be close to actual AFR readings.
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