maftcalibrationbywbo2
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maftcalibrationbywbo2 [2008/01/23 08:10] 76.100.119.159 |
maftcalibrationbywbo2 [2008/01/23 18:37] DSMmaniac_Big_O A simple formula for calculting the adjustment amount need when using this technique for MAFT calibration |
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| Example: If the fuel trim is at a constant +7%, add +7% to the 250 Hz slider in the airflow table. Repeat until you are happy. | Example: If the fuel trim is at a constant +7%, add +7% to the 250 Hz slider in the airflow table. Repeat until you are happy. | ||
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| ====== WOT Tuning (A/F Ratio, WBO2, & MAFRaw) 400hz, 800hz, 1200hz, 1600hz, 2000hz, 2400hz ====== | ====== WOT Tuning (A/F Ratio, WBO2, & MAFRaw) 400hz, 800hz, 1200hz, 1600hz, 2000hz, 2400hz ====== | ||
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| * When A/F Ratio is leaner than WBO2 subtract airflow. OR when A/F Ratio is above WBO2 on the graph, subtract airflow to move A/F Ratio down. OR when you want less fuel, subtract airflow. | * When A/F Ratio is leaner than WBO2 subtract airflow. OR when A/F Ratio is above WBO2 on the graph, subtract airflow to move A/F Ratio down. OR when you want less fuel, subtract airflow. | ||
| * For each 0.10 A/F Ratio is off, adjust by 1% airflow. | * For each 0.10 A/F Ratio is off, adjust by 1% airflow. | ||
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| Example: You make a pull and you get the following results: | Example: You make a pull and you get the following results: | ||
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| | WBO2 | 11.0| 12.0| 10.7| 9.6| 9.6| 9.4| | | WBO2 | 11.0| 12.0| 10.7| 9.6| 9.6| 9.4| | ||
| | Adjustment | +17%| +25%| +13%| +4%| +3%| -1%| | | Adjustment | +17%| +25%| +13%| +4%| +3%| -1%| | ||
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| + | A simple formula for calculating this is(submitted by Omar R. "DSMmaniac_Big_O"): | ||
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| + | (est a/f - WB02) * (-10) = airflow adjustment amount. | ||
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| + | <code>Example: | ||
| + | MAFRaw (hz) 800 | ||
| + | A/F Ratio 9.5 | ||
| + | WBO2 12.0 | ||
| + | Adjustment + 25% | ||
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| + | (9.5 - 12.0) * (- 10) | ||
| + | (-2.5) * (- 10) | ||
| + | = 25% </code> | ||
| ====== Notes ====== | ====== Notes ====== | ||
maftcalibrationbywbo2.txt ยท Last modified: 2024/03/15 11:16 (external edit)
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