drees said:
Ingineer said:
This "feature" doesn't appear to have changed with the firmware. It's not a bug or a problem. If you had to call Nissan customer service while driving and request they change the position of their foot on your car's pedal, then I can see it being a dangerous situation, but as long as YOU are in control of your foot, this is not a problem.
No, it's not a problem - just annoying when you expect somewhat linear throttle response and you get very non-linear throttle response. I've had situations where I've stabbed the throttle, car continued to accelerate faster than expected, let off throttle, car slows down much more than expected, then have to push down _more_ than it was originally to get going again.
Or it could all be in my head.
And it probably is!
OK, so I tested this today on my stock firmware car.
In D from a stop, if you stab the pedal a bit from a stop (it's not much pedal movement, certainly much less than 50% throttle position, I'd guess more like 20%), power will climb to 80 kW as you accelerate past 30 mph.
Let off the pedal a tiny bit and reapply back to the same position, power will be in the 20-30 kW range. Stabbing the pedal back to the same position from speed results in 20-30 kW.
So I stand by my hypothesis that the car gets stuck at 100% power when you ask for more power than is available at low speeds and doesn't recalculate until you release the accelerator pedal some.
Really wacky throttle mapping - I haven't driven a gas car that behaves this way, even ones with electronic throttles, but I haven't driven that many. I've seen TPS maps for electronic throttle cars that adjust TPS based on RPMs/engine load, but this is mainly to open up the throttle more at low rpms / low engine load to make the car more responsive but as RPMs/engine load increases they reduce the throttle position for the same pedal position. Seems like Nissan forgot to program that bit in or there's a bug in the firmware.