I am writing this to create my analysis of the FTC (how it functions etc) and hopefully answer some general questions about the system.
MSP general Open loop= 4200(or so) or higher RPM, or 3 seconds of 100%load.
To increase fuel in the lower rpms'....
I have been playing with the "overboost" function, and It seems to give me fuel enrichment via fuel trims (of which I do not want).
After I am over my overboost limit, the FTC interrupts the O2 signal and outputs its own "mock O2" signal. This signal should indicate a car running okay (aka flip flopping from high to low) I can confirm this, 0.8 to 0.2 volts flopping back and forth in my torque app.
Calling to confirm this with Split Sec, the SSFTC will flip flop back and forth from 0.8 to 0.2volts to simulate proper ratio to the ECU, in this way people can then add or decrese fuel in the fuel maps to adjust their AFR, only problem is, that my trims are changing with this "mock signal", when intuitively, I would think they should not.
Can anyone else confirm this? The trims increasing with time before hitting open loop.
For example in 4th gear, freeway, 3000 rpm or so, if I just get to about 3 psi and hold it, the car will not go into open loop, and my overboost is set at -1, in this way with my fuel tables still at 10 (no change). I can watch my Short Term Fuel Trim rise with time, up to +25% (and also see the AFR dropping into the 10's) in about 3 seconds. All in closed loop.
Hit Open loop after that, and dump some more fuel in!
I am by no means done tuning, I am just writing my analysis of the SSFTC here, I have heard that applying 1v to the O2 will trigger open loop, and I will try that soon.
...More analysis to come.
MSP general Open loop= 4200(or so) or higher RPM, or 3 seconds of 100%load.
To increase fuel in the lower rpms'....
I have been playing with the "overboost" function, and It seems to give me fuel enrichment via fuel trims (of which I do not want).
After I am over my overboost limit, the FTC interrupts the O2 signal and outputs its own "mock O2" signal. This signal should indicate a car running okay (aka flip flopping from high to low) I can confirm this, 0.8 to 0.2 volts flopping back and forth in my torque app.
Calling to confirm this with Split Sec, the SSFTC will flip flop back and forth from 0.8 to 0.2volts to simulate proper ratio to the ECU, in this way people can then add or decrese fuel in the fuel maps to adjust their AFR, only problem is, that my trims are changing with this "mock signal", when intuitively, I would think they should not.
Can anyone else confirm this? The trims increasing with time before hitting open loop.
For example in 4th gear, freeway, 3000 rpm or so, if I just get to about 3 psi and hold it, the car will not go into open loop, and my overboost is set at -1, in this way with my fuel tables still at 10 (no change). I can watch my Short Term Fuel Trim rise with time, up to +25% (and also see the AFR dropping into the 10's) in about 3 seconds. All in closed loop.
Hit Open loop after that, and dump some more fuel in!
I am by no means done tuning, I am just writing my analysis of the SSFTC here, I have heard that applying 1v to the O2 will trigger open loop, and I will try that soon.
...More analysis to come.
