Tuning MAF......
If you have commanded an AFR of 12.5:1 across all engine speeds (RPM Points) at WOT and you perform a test run on the dyno or track and see that your resulting AFR is 13:1 your MAF curve must be adjust to correct for this.
In this case an AFR of 13:1 is approximately 4% leaner than commanded. To correct for this you would highlight the cells corresponding to airflow and add 4% to the values in those cells and retest?
The question is?
How did you know it is 4% not 5 or 6%?????
Use a histogram set up to measure AFR Error, use the Copy/Paste Half % function to apply the changes to the MAF table.
There are a lot of threads on how to do this.
13.0/12.5=1.04Originally Posted by BERSERK
The question is?
How did you know it is 4% not 5 or 6%?????
Best regards,
Bill
Silver 2003 C5 roadster, M6, Euro red/amber tails, Z06 Ti mufflers, Z06 2 cat H-pipe, Z06 airbox, and HPTuners s/w - available to any Corvette or other GM vehicle in Calgary, and also for Ford and Dodge products, including Cummins
ok the MAF error.
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