Controlling lambse on decel
-
- Posts: 104
- Joined: 2021 Feb 15, 21:56
- Location: Lancaster New York
- Vehicle Information: 1989 fox GT convertible
5.0 stock block, E7 heads, stock cam
Explorer GT40 intake flipped to driver side inlet
Single 67mm On3 BB turbo
Flipped JBA headers, custom SS 2.5" hotside built by me
custom 3" coldside thru On3 intercooler
tuning with Moates QH + TPRT
Dechipa's GUFX and supporting files, couldnt have tuned it myself without him!
Re: Controlling lambse on decel
Did you see the load drop to below .16? Did you try increasing to a higher load?
-
- Posts: 67
- Joined: 2021 Mar 31, 17:29
- Location: Victoria, BC CANADA
- Vehicle Information: QH, TunerPro RT 5, GUFX_220418.xdf, A9L2_220405, DECIPHA_220505.ADX, 395w, AFR 195CC Renegade heads, Comp XE274HR cam, Siemens-Deka V 80lb/hr (shorties), Mass-Flo-EFI style 4bbl throttle body with GM maf on top. Custom long tube headers, sidepipes, 5 spd manual.
Re: Controlling lambse on decel
Yes, I did definitely se load drop below .16. I didn't try changing it to a higher load. Am I right to expect the CL/OL indicator switch to open loop when FN338 is functioning as expected?
Sean
Sean
-
- Posts: 104
- Joined: 2021 Feb 15, 21:56
- Location: Lancaster New York
- Vehicle Information: 1989 fox GT convertible
5.0 stock block, E7 heads, stock cam
Explorer GT40 intake flipped to driver side inlet
Single 67mm On3 BB turbo
Flipped JBA headers, custom SS 2.5" hotside built by me
custom 3" coldside thru On3 intercooler
tuning with Moates QH + TPRT
Dechipa's GUFX and supporting files, couldnt have tuned it myself without him!
Re: Controlling lambse on decel
Yea the indicator will switch.
I would try increasing the load a bit next time to see if it will go into OL.
I would try increasing the load a bit next time to see if it will go into OL.
-
- Posts: 67
- Joined: 2021 Mar 31, 17:29
- Location: Victoria, BC CANADA
- Vehicle Information: QH, TunerPro RT 5, GUFX_220418.xdf, A9L2_220405, DECIPHA_220505.ADX, 395w, AFR 195CC Renegade heads, Comp XE274HR cam, Siemens-Deka V 80lb/hr (shorties), Mass-Flo-EFI style 4bbl throttle body with GM maf on top. Custom long tube headers, sidepipes, 5 spd manual.
Re: Controlling lambse on decel
I'll finish sorting through my electrical gremlins before having another go at this. Thanks!
Sean
Sean
-
- Posts: 67
- Joined: 2021 Mar 31, 17:29
- Location: Victoria, BC CANADA
- Vehicle Information: QH, TunerPro RT 5, GUFX_220418.xdf, A9L2_220405, DECIPHA_220505.ADX, 395w, AFR 195CC Renegade heads, Comp XE274HR cam, Siemens-Deka V 80lb/hr (shorties), Mass-Flo-EFI style 4bbl throttle body with GM maf on top. Custom long tube headers, sidepipes, 5 spd manual.
Re: Controlling lambse on decel
Gremlins gone. I can now see it dropping into OL on decel at the desired load value. I might try raising FN338 a little, just to experiment. Thanks again for the guidance on this!
Sean
Sean
-
- Posts: 104
- Joined: 2021 Feb 15, 21:56
- Location: Lancaster New York
- Vehicle Information: 1989 fox GT convertible
5.0 stock block, E7 heads, stock cam
Explorer GT40 intake flipped to driver side inlet
Single 67mm On3 BB turbo
Flipped JBA headers, custom SS 2.5" hotside built by me
custom 3" coldside thru On3 intercooler
tuning with Moates QH + TPRT
Dechipa's GUFX and supporting files, couldnt have tuned it myself without him!
Re: Controlling lambse on decel
Nice! What was the culprit?
-
- Posts: 67
- Joined: 2021 Mar 31, 17:29
- Location: Victoria, BC CANADA
- Vehicle Information: QH, TunerPro RT 5, GUFX_220418.xdf, A9L2_220405, DECIPHA_220505.ADX, 395w, AFR 195CC Renegade heads, Comp XE274HR cam, Siemens-Deka V 80lb/hr (shorties), Mass-Flo-EFI style 4bbl throttle body with GM maf on top. Custom long tube headers, sidepipes, 5 spd manual.
Re: Controlling lambse on decel
Looks like maybe a combination of things, mostly a vacuum connection to fuel regulator that had unknowingly pulled off. Everything looked visually right, but when i tugged on hose, i could see it wasn't connected to manifold barb fitting. Small vacuum leak and an operator who continued to make changes to MAF values made things slowly worse, until it no longer supplied fuel as demanded. Yes, I'm embarrassed, but at least I'm willing to admit I screwed up! Seems good now.
When I get home from brief vacay, I'll try a higher value for FN338.
Sean
When I get home from brief vacay, I'll try a higher value for FN338.
Sean