Questions about 10cent Tuning {QUESTION_1} {QUESTION_2} {QUESTION_3} {QUESTION_4} {QUESTION_5} {QUESTION_6} {QUESTION_7} {QUESTION_8} {QUESTION_9} {QUESTION_10}

Hi,

I have a few questions regarding the 10-cent tuning.
First, however, the following.
The car has already been tuned, with 140 hp and 302 Nm measured on the dyno.
The max. Torque, however, only starts to build up above 3000 RPM.
The max. The charging pressure is set to approximately 1.2 bar.
Had the 10cent tuning (version with diodes and a 500 Ohm potentiometer)
Just for testing purposes.
At 200 Ohms, significantly better acceleration starting at 1700 RPM, especially at higher speeds.
Speeds above 3000 RPM, however, not usable due to the addition of the
both tunings, even with higher resistor values, are likely too aggressive.
therefore, rebuilt.
Following error description:
Fuel injection quantity control valve upper limit reached, resulting in a jerk.
Car and the traction control warning light is on.

General Questions:
Has anyone experience what a usable resistance value is to use the
Motor (Piston Melting) - Do not overstress.
Must you advance the injection timing when doing 10 cent tuning, and is it sufficient to do this via engine control unit (ECU) adaptation?

Specific question for my problem.
I once measured the voltage between
measured the two wires for the 10cent tuning (without 10cent tuning)
achieve a maximum value of 2.38V. If I now measure this voltage with
a) Amplitude Limiter (two 1.5V Z-diodes facing each other)
(switch it off) to limit to 2.2V, and then apply the 10cent tuning.
would the addition of the two tunings also work, or would it overload?
I have used the amplitude limiter to such an extent that it has...
anyway, it doesn't work?????

Thank you in advance for your answers.

Hi Achim

As you described, your chip focuses on the upper RPM range, where the diesel engine starts to operate relatively inefficiently.
In the series, this area is portrayed as being approximately as unattractive as it actually is, due to the limited burning speed.
D.h. the amount of fuel injected remains largely constant, but nevertheless, the torque decreases.

The rotational speed of your engine can generally only be achieved by proportionally increasing the injection volume in the upper speed range. If you put another 10c tuning on it, it could potentially quickly become very dangerous and lead to piston melting.

IMO, the ideal scenario would be a slight increase in the lower RPM range - until the well-known "full throttle" rubbing issue occurs around 1,800 rpm.
But since the "dummy" 10c tuning doesn't evaluate the RPM, that unfortunately doesn't work.

Therefore, my tip: If your dynamometer results are not "favorable," I would recommend leaving the chip in place to protect the engine's lifespan.