thats perfectly normal thats decel fuel shut off
the engine isn't lean on decel its off
Ultra rich as engine decels
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Killer95GT302
- Posts: 21
- Joined: 2021 Dec 29, 08:21
- Location: Annapolis, Maryland
- Vehicle Information: 1995 Mustang GT U4P0
Single Turbocharged 363
Tuned using Tweecer with Binary Editor
Re: Ultra rich as engine decels
Have you tried completely disabling DFSO in your tune to see if you still see what youre seeing?
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dleach1407
- Posts: 468
- Joined: 2021 Mar 21, 15:17
- Location: Colorado Springs, CO
- Vehicle Information: 95 Mustang GT, CBAZA Quarterhorse
331, 190 11R heads, Edelbrock Victor 50 manifold, F303, T5, 76mm Turbo, 91 octane, Returnless dual pump 03 cobra tank, Behind bars rails, 80# siemens injectors
wbo2_030MtxL
57 F100, RZASA, 04 Crown Vic ecu and harness, 302, GT40 heads, 4r70w, 80# deka5 shorties, Holley carb style throttle body, Speedmaster high rise intake manifold
Re: Ultra rich as engine decels
Dfso is completely disabled.
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Killer95GT302
- Posts: 21
- Joined: 2021 Dec 29, 08:21
- Location: Annapolis, Maryland
- Vehicle Information: 1995 Mustang GT U4P0
Single Turbocharged 363
Tuned using Tweecer with Binary Editor
Re: Ultra rich as engine decels
with DFSO disabled it shouldn't be doing that - looking at your log pics, LAMBSE is still 1.08 so EEC is commanding the right AFR, its beyond me why your pulsewidth is 0ms.
Do you actually see LAMBSE go to 1.5, instead of LAMBDA?
Do you actually see LAMBSE go to 1.5, instead of LAMBDA?
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dleach1407
- Posts: 468
- Joined: 2021 Mar 21, 15:17
- Location: Colorado Springs, CO
- Vehicle Information: 95 Mustang GT, CBAZA Quarterhorse
331, 190 11R heads, Edelbrock Victor 50 manifold, F303, T5, 76mm Turbo, 91 octane, Returnless dual pump 03 cobra tank, Behind bars rails, 80# siemens injectors
wbo2_030MtxL
57 F100, RZASA, 04 Crown Vic ecu and harness, 302, GT40 heads, 4r70w, 80# deka5 shorties, Holley carb style throttle body, Speedmaster high rise intake manifold
Re: Ultra rich as engine decels
No, i do not. I never see it commanding anything out of the ordinary. As far as I can tell It chases the lean condition when it happens but I cant figure out for the life of me how its dropping below the minimum pulsewidth set in the computer and why I would see 0 pulsewidth. Hoping Decipha has time to look at my tune and logs eventually.
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decipha
- Posts: 5046
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'19 F-150 3.3L
Re: Ultra rich as engine decels
see 5 posts up
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dleach1407
- Posts: 468
- Joined: 2021 Mar 21, 15:17
- Location: Colorado Springs, CO
- Vehicle Information: 95 Mustang GT, CBAZA Quarterhorse
331, 190 11R heads, Edelbrock Victor 50 manifold, F303, T5, 76mm Turbo, 91 octane, Returnless dual pump 03 cobra tank, Behind bars rails, 80# siemens injectors
wbo2_030MtxL
57 F100, RZASA, 04 Crown Vic ecu and harness, 302, GT40 heads, 4r70w, 80# deka5 shorties, Holley carb style throttle body, Speedmaster high rise intake manifold
Re: Ultra rich as engine decels
If I have DFSO disabled, how is it DFSO?
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decipha
- Posts: 5046
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'19 F-150 3.3L
Re: Ultra rich as engine decels
its obviously not disabled
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dleach1407
- Posts: 468
- Joined: 2021 Mar 21, 15:17
- Location: Colorado Springs, CO
- Vehicle Information: 95 Mustang GT, CBAZA Quarterhorse
331, 190 11R heads, Edelbrock Victor 50 manifold, F303, T5, 76mm Turbo, 91 octane, Returnless dual pump 03 cobra tank, Behind bars rails, 80# siemens injectors
wbo2_030MtxL
57 F100, RZASA, 04 Crown Vic ecu and harness, 302, GT40 heads, 4r70w, 80# deka5 shorties, Holley carb style throttle body, Speedmaster high rise intake manifold
Re: Ultra rich as engine decels
I have set dfso time to enable to 15 seconds and dfso minimum ect set to 254 and minimum DFSO speed is 25mph. It happens at any speed only cold below 120ish. I can decel when warm forever and it never shuts off the injectors. So what else would I need to change because I am pretty confident its disabled.
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decipha
- Posts: 5046
- Joined: 2021 Feb 15, 12:23
- Location: Metairie, LA
- Vehicle Information: Work Truck
'19 F-150 3.3L
Re: Ultra rich as engine decels
post the tune file