v3mafadjcombft
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v3mafadjcombft [2009/01/12 14:05] twdorris |
v3mafadjcombft [2009/02/26 14:23] twdorris |
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| ====== MAF Adj: CombinedFT ====== | ====== MAF Adj: CombinedFT ====== | ||
| + | **NOTE:** Make sure you're running the latest version of the [[v3changelog|laptop application]]. We are constantly improving and tweaking this function to get better results as more users are posting example files. | ||
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| The **MAF Adj: CombinedFT** menu item is one of several tools you can use to help "dial in" your airflow settings. This particular item maps out and averages [[v3combinedft|CombinedFT]] over a range of closed loop driving conditions to produce a set of adjustments to the current MAF compensation table. It's basically letting the ECU track how much adjustment it needs under various conditions and then moves that adjustment into the MAF compensation table. | The **MAF Adj: CombinedFT** menu item is one of several tools you can use to help "dial in" your airflow settings. This particular item maps out and averages [[v3combinedft|CombinedFT]] over a range of closed loop driving conditions to produce a set of adjustments to the current MAF compensation table. It's basically letting the ECU track how much adjustment it needs under various conditions and then moves that adjustment into the MAF compensation table. | ||
| This function probably helps most with a GM MAF setup run straight to the ECU using ECMLink's GM MAF integration option. That particular configuration produces a pretty large number of MAF sample points for fairly typical driving conditions (easily ranging from 500hz to 2000hz for simple idle and cruise conditions). So having a tool which helps establish a decent starting point can be very handy here. | This function probably helps most with a GM MAF setup run straight to the ECU using ECMLink's GM MAF integration option. That particular configuration produces a pretty large number of MAF sample points for fairly typical driving conditions (easily ranging from 500hz to 2000hz for simple idle and cruise conditions). So having a tool which helps establish a decent starting point can be very handy here. | ||
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| + | Although this function probably helps a direct GM MAF setup more, it can still be useful with other configurations too. | ||
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| A good understanding of [[v3combinedft|CombinedFT]] and [[fueltrimupdatepoints|fuel trim in general]] will help a lot with your understanding of this function. | A good understanding of [[v3combinedft|CombinedFT]] and [[fueltrimupdatepoints|fuel trim in general]] will help a lot with your understanding of this function. | ||
| - | Add the following log items to your captured values: CombinedFT, MAFRaw and ClosedLoop | + | Add the following log items to your captured values (F10): CombinedFT, MAFRaw and ClosedLoop |
| Make sure the engine is at full operating temperatures. You don't want to mess with coolant based variations at this point. You want to stabilize everything you can first and then adjust based on the one variable left (presumably airflow variation). | Make sure the engine is at full operating temperatures. You don't want to mess with coolant based variations at this point. You want to stabilize everything you can first and then adjust based on the one variable left (presumably airflow variation). | ||
v3mafadjcombft.txt ยท Last modified: 2024/03/15 11:16 (external edit)
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