Originally Posted by
engineermike
I finally got a chance to open your tune and log. Lots of stuff going on there. A few comments:
- The 1.1 lambda and torque req lean are completely no surprise. You've changed most of table 44775 Fuel cut torque ratio to 0.0, thereby allowing enleanment to be used to cut torque. So, it's sending lambda to 1.1 per table 44169 just like you told it to. The 44775 table should stay at 1.0 top to bottom like stock.
- Your fuel trims are adding 25% fuel and it's still going lean to .95 lambda at wot even though you're commanding .8. It's out of fuel, but you didn't log port injector duty cycle or max duty cycle to see what they're doing.
- When you run out of fuel, it's supposed to limit the driver demand torque, but this safety feature isn't helping you because your torque tables appear to be inaccurate.
- My guess is your fuel pressure is tanking and even the big injectors can't help it because the pressure is so low. But fuel pressure wasn't logged so I can't say for sure.