v3mafadjcombft
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v3mafadjcombft [2009/06/02 09:24] twdorris |
v3mafadjcombft [2009/06/11 14:07] twdorris |
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| ====== MAFComp Adjust (CombinedFT) ====== | ====== MAFComp Adjust (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 **MAFComp Adjust (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 **MAFComp Adjust (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. | ||
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| Although this function probably helps a direct GM MAF setup more, it can still be useful with other configurations too. | Although this function probably helps a direct GM MAF setup more, it can still be useful with other configurations too. | ||
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| ===== Initial requirements ===== | ===== Initial requirements ===== | ||
| + | ====== STEP 1: Check Your Fuel Settings ====== | ||
| You absolutely MUST make sure your fuel settings are already appropriate for your injector size, fuel type and base fuel pressure. If there is any deviation here, then the adjustments to airflow suggested by this function will simply include those fuel corrections as well! This can create a really confusing configuration if you aren't careful. So please review your [[baseinjectordata|global fuel and deadtime settings]] first to make sure they are at least somewhat reasonable for your setup. | You absolutely MUST make sure your fuel settings are already appropriate for your injector size, fuel type and base fuel pressure. If there is any deviation here, then the adjustments to airflow suggested by this function will simply include those fuel corrections as well! This can create a really confusing configuration if you aren't careful. So please review your [[baseinjectordata|global fuel and deadtime settings]] first to make sure they are at least somewhat reasonable for your setup. | ||
| + | ====== STEP 2: Check For Close Loop Operation ====== | ||
| Make sure the car is able to run in closed loop mode. Look for a cycling FrontO2 sensor and a "1" in the ClosedLoop log item. It doesn't have to be running with fuel trims near 0% (that's the purpose of using this function after all). But it does need to at least cycle in closed loop mode on its own. If it does not, you need to make some manual adjustments first to at least get it running in closed loop. | Make sure the car is able to run in closed loop mode. Look for a cycling FrontO2 sensor and a "1" in the ClosedLoop log item. It doesn't have to be running with fuel trims near 0% (that's the purpose of using this function after all). But it does need to at least cycle in closed loop mode on its own. If it does not, you need to make some manual adjustments first to at least get it running in closed loop. | ||
| 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. | ||
| + | ====== STEP 3: Data Capture ====== | ||
| Add the following log items to your captured values (F10): CombinedFT, MAFRaw and ClosedLoop | Add the following log items to your captured values (F10): CombinedFT, MAFRaw and ClosedLoop | ||
v3mafadjcombft.txt ยท Last modified: 2024/03/15 11:16 (external edit)
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