Decent lambda on idle but goes very rich when the throttle is touched

[Dolan]

I have a similar issue with my car and a mates car.

When I try to tune the injectors to a different fuel pressure or when I have different injectors and fuel pressure I get decent lambda on idle but goes very rich when the throttle is touched.

 

I've checked the fuel pressure and it is rock solid (using a GFB FPR), disabled closed loop fuel.

STFT, LTFT and commanded lambda is dead on 1.00. Also when I data log the the injector pulse width hardly changes (1.6667% to 1.9444% duty cycle)

 

I'm stumped at the moment, I've checked everything, gone through all the forum posts and tried everything I can think of, but I know I'm missing something.

Any help would be very greatly appreciated!

 

Video

Edited November 10, 2020 by Dolan

[Roland@pcmtec]

As soon as you touch the throttle the cam timing will change. Do a scatter plot of rpm vs cam timing vs ltft and see if it's correlated to a specific speed density cell. 

[Dolan]

It doesn't really show much as my LTFT and STFT are both disabled. And I don't have a O2 sensor plugged in either

Cam Timing 01.csv

[Roland@pcmtec]

Then graph it against your wideband instead