Fuel cut (overrun) logic help

EMU BLACK / CLASSIC
1

Hi folks, The current project I am doing is Turbocharging a 2022 Suzuki jimny K15B

I have a EMU Classic installed parallel with the oem ecu, everything works great so far, the only problem I have is that the oem ecu will keep a 13% throttle opening resulting in a 23kpa MAP reading when I’m decelerating. If I make the FC under pressure to 23kpa it works great as expected, unfortunately when you drive in higher RPM and Light load you can register a 23kpa situation and of course it will cut fuel then. Resulting in bad drivability

Is there a way we can add a logic to the fuel cut under pressure to maybe Pedal position? Using a analog input? Or maybe Vehicle speed?
The oem ecu drives the e-throttle body and I am using that as tps signal.

Any ideas? Thanks

2

I see there is a option in the fuel cut parameters to use PPS instead of tps, Can I wire in a pedal position sensor to any analog inputs? but let the oem ecu still manage the DBW throttle, that way I might get fuel cut based on Pedal position. I might loose some drivability when there is small throttle changes and the EMU cant compensate for those, because the pedal position didn’t necessary change

3

Why is your TPS reading holding 13%?

4

Because the tps is on the DBW throttle body, and the OEM ecu is still controlling it. So on deceleration (pedal fully released) the oem ecu still has a 13% throttle opening, but with the oem configuration it will cut the fuel and the car will successfully decelerate.