Help with Open vs Closed loop operation/calibration.
Posted: Fri Nov 23, 2018 3:55 pm
Hi
Have a B16A1 which I'm converting to Turbo/E85.
The engine setup is a B16A1 drilled/honed +0,5 with forged CP-pistons, rods, ARP's, Cometics gasket and OEM-Cams and have comp.ratio 10.7:1.
After the engine was rebuilt, I run the engine in N/A-mode for the entire summer, with the "stock JDM P30" calibration, just with some minor Fuel Table tunings.
It was also on a dyno, after the engine was rebuilt, gave 150hp on the wheels. Just like OEM.
Installed brand new injectors ID1050x, drained out the gasoline and filled up the tank with E85.
Modified the "stock JDM P30" for the new ID1050x injectors and added 30% to Overall Fuel Trim . (se picture)
Have stock, OEM fuel pressure. Use AEM Fuego Wideband.
The engine is still in N/A-mode, with OEM header and no boost.
Now to the problem:
In Closed Loop everything looks OK.
With all the fuel corrections almost on "0", I get Lambda-1. (se picture)
But when I switch to Open Loop the Lambda goes crazy rich. (se picture)
To get back to Lambda-1 in Open Loop for idle, I need to reduce fuel like crazy. (se picture)
And when Lamda is OK in Open Loop and I switch back to Closed Loop, the engine dies, doens't get enough fuel.
Does S300 manipulate fuel in other ways then for Water ECT.c%/Air IAT.c%, and S.TRIM/L.TRIM% ?
I've recorded Data Logs, in both Open and Closed Loop operation.
Could somebody plz help me?
Thx in advance //BR Benci
Have a B16A1 which I'm converting to Turbo/E85.
The engine setup is a B16A1 drilled/honed +0,5 with forged CP-pistons, rods, ARP's, Cometics gasket and OEM-Cams and have comp.ratio 10.7:1.
After the engine was rebuilt, I run the engine in N/A-mode for the entire summer, with the "stock JDM P30" calibration, just with some minor Fuel Table tunings.
It was also on a dyno, after the engine was rebuilt, gave 150hp on the wheels. Just like OEM.
Installed brand new injectors ID1050x, drained out the gasoline and filled up the tank with E85.
Modified the "stock JDM P30" for the new ID1050x injectors and added 30% to Overall Fuel Trim . (se picture)
Have stock, OEM fuel pressure. Use AEM Fuego Wideband.
The engine is still in N/A-mode, with OEM header and no boost.
Now to the problem:
In Closed Loop everything looks OK.
With all the fuel corrections almost on "0", I get Lambda-1. (se picture)
But when I switch to Open Loop the Lambda goes crazy rich. (se picture)
To get back to Lambda-1 in Open Loop for idle, I need to reduce fuel like crazy. (se picture)
And when Lamda is OK in Open Loop and I switch back to Closed Loop, the engine dies, doens't get enough fuel.
Does S300 manipulate fuel in other ways then for Water ECT.c%/Air IAT.c%, and S.TRIM/L.TRIM% ?
I've recorded Data Logs, in both Open and Closed Loop operation.
Could somebody plz help me?
Thx in advance //BR Benci