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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
COBB Accessport - Tuned by GooseTuned
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<blockquote data-quote="TwizzleStix" data-source="post: 1649516" data-attributes="member: 32095"><p>Yes, both are correct. The AP and practically every other AFR monitoring device uses 14.7 as the stoic value that all ECU fueling calculations/measurements are based on. When running fuels that are NOT stoic at 14.7, you must change the "set point" AFR so that the ECU performs appropriately to maintain correct fueling, based on the particular fuel stoic value. In this case, the E50 blend is quite a bit richer at stoic than gasoline. It appears that the Ford parameter displayed on the dash is based on the SP value that's set in the Goose tune. </p><p></p><p>I spent considerable time and testing to get mine set where it should be, then I tweaked it a bit leaner at stoic so it would get a little better fuel mileage when just cruising. There is always a chance of a problem if Goose were to do it for customers, so it doesn't make business sense for him to do such things. A business tuner lives and dies with the customer's happiness, such that if he does something for someone, even by request, and it doesn't work out as expected or causes some other problem such as misfires, or ANY problem with engine operation, then that customer invariably reports it on a forum and the negativity ball is set into motion. In most cases, the tuner will come to their defense, but the damage is already done. It's for this main reason that I 100% support Goose/Winfield as the best tuner I've every dealt with. You can rest assured that he will not do you wrong and will stretch to make sure you're happy with his work. Even though I run my own tunes I KNOW and understand Winfield's strategy and he is tops in my book.</p><p></p><p>Anyway, back to the noted difference issue. You can see this "Set Point" or SP value on the AP by changing the AFR Average monitor to the AFR (SP) monitor. Then you will see the ACTUAL AFR the engine is running to based on the fuel used. It sounds a bit complicated, but that is why tuners guard their knowledge as intellectual property. It requires significant time/effort to learn all the details required to actually change the OEM settings for peak performance, especially on different fuels.</p></blockquote><p></p>
[QUOTE="TwizzleStix, post: 1649516, member: 32095"] Yes, both are correct. The AP and practically every other AFR monitoring device uses 14.7 as the stoic value that all ECU fueling calculations/measurements are based on. When running fuels that are NOT stoic at 14.7, you must change the "set point" AFR so that the ECU performs appropriately to maintain correct fueling, based on the particular fuel stoic value. In this case, the E50 blend is quite a bit richer at stoic than gasoline. It appears that the Ford parameter displayed on the dash is based on the SP value that's set in the Goose tune. I spent considerable time and testing to get mine set where it should be, then I tweaked it a bit leaner at stoic so it would get a little better fuel mileage when just cruising. There is always a chance of a problem if Goose were to do it for customers, so it doesn't make business sense for him to do such things. A business tuner lives and dies with the customer's happiness, such that if he does something for someone, even by request, and it doesn't work out as expected or causes some other problem such as misfires, or ANY problem with engine operation, then that customer invariably reports it on a forum and the negativity ball is set into motion. In most cases, the tuner will come to their defense, but the damage is already done. It's for this main reason that I 100% support Goose/Winfield as the best tuner I've every dealt with. You can rest assured that he will not do you wrong and will stretch to make sure you're happy with his work. Even though I run my own tunes I KNOW and understand Winfield's strategy and he is tops in my book. Anyway, back to the noted difference issue. You can see this "Set Point" or SP value on the AP by changing the AFR Average monitor to the AFR (SP) monitor. Then you will see the ACTUAL AFR the engine is running to based on the fuel used. It sounds a bit complicated, but that is why tuners guard their knowledge as intellectual property. It requires significant time/effort to learn all the details required to actually change the OEM settings for peak performance, especially on different fuels. [/QUOTE]
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