Torque Limiter Below 4th Gear?

Hello,

Today, I had the opportunity to take a drive in a T4 Synchro.
ECU data: 074 906 018 AL, 2.5l R5 EDC G000SG, 3321.

In this case, the EDC exhibited a rather amusing behavior:
In 3rd gear, at approximately 2000 RPM and with the accelerator fully pressed, the boost pressure regulated correctly, and the air mass readings were also fine. However, the fuel injection volume increased very slowly and only reached its full value above 3000 RPM.

In 4th gear, there were no such misfires, and when I pressed the accelerator, the fuel injection (and torque) were immediately present.

?

Is there a kind of torque limitation that depends on the gear?

Best regards, Rainer.

Hello,
Is the direction being determined, or just the speed?
Best regards,
Günther.

Günther wrote:

... Is the direction being determined, or just the speed?

The gear ratio can be easily determined from the STG (Steering Torque Generator) using the speed-torque ratio. The axle and transmission ratios are already known.

hello

I haven't found a reasonable answer yet. I'll probably remove the chip tuning next or the week after, use the original data, drive for a while, and then install a new chip. Let's see what happens.

Just to let you know, this issue doesn't occur on a rolling road test. However, I suspect it might be related to the speedometer calibration, as the off-road tires currently mounted have a rolling circumference that is approximately 11% larger.



peter



edit: please be patient.