createvolumetricefficiencymap
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createvolumetricefficiencymap [2008/01/23 09:02] 76.100.119.159 created |
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| - | ====== Overview ====== | + | ====== Create Volumetric Efficiency Map ====== |
| The VE table is **only** used while the ECU is operating in Fake MAF mode. When Fake MAF is selected, the signal coming from the real MAF is ignored above the entered switch over point. For that point on, a MAF signal is simulated by extrapolating from the conditions observed at the switch over point. | The VE table is **only** used while the ECU is operating in Fake MAF mode. When Fake MAF is selected, the signal coming from the real MAF is ignored above the entered switch over point. For that point on, a MAF signal is simulated by extrapolating from the conditions observed at the switch over point. | ||
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| With boost lowered appropriately, deselect Fake MAF and set the clamp point to something around where full boost is achieved. Again, datalog MAFRaw to determine this value. Then log both MAFComp and MAFSD. MAFComp is the MAF sensor reading after compensations have been applied to it from the MAF Compensation table. MAFSD is MAFComp after VE adjustments have been applied (as well as factoring in pressure if you have Use MAP selected). Both of these are calculated even when they’re not being used. Adjust the VE table until MAFSD replicates MAFComp. This process will effectively map out the volumetric efficiency of your setup. | With boost lowered appropriately, deselect Fake MAF and set the clamp point to something around where full boost is achieved. Again, datalog MAFRaw to determine this value. Then log both MAFComp and MAFSD. MAFComp is the MAF sensor reading after compensations have been applied to it from the MAF Compensation table. MAFSD is MAFComp after VE adjustments have been applied (as well as factoring in pressure if you have Use MAP selected). Both of these are calculated even when they’re not being used. Adjust the VE table until MAFSD replicates MAFComp. This process will effectively map out the volumetric efficiency of your setup. | ||
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createvolumetricefficiencymap.1201096934.txt.gz · Last modified: 2008/01/23 09:02 by 76.100.119.159
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