30% Mehrleistung dank Daniel Düsentuning? | Posts 16+

mozz wrote:

I can only run the pressure test again on Friday - and I will! So, I'll be printing a test series in the standard configuration (as expected) with the chip set to 1.25 bar. I will report immediately after I have completed the test!!

Hi.

If you're feeling brave, try measuring the revving speed with the tuning nozzles and the original software.

I guess it's probably quite a bit higher than with the original nozzles - possibly even outside the acceptable operating range.

"That is, even if the car passes the emissions test regarding soot, I believe the idle speed setting will likely cause it to fail - unless you adjust the fuel pump to be significantly leaner beforehand (that small amount of VAGCOM adaptation range probably won't be enough) and then you'll likely encounter starting problems, etc., specifically for the TÜV inspection."

The standard-tuned EDC system 'doesn't hold back 30%', but rather corresponds to the desired design specifications. This is achieved through target values for parameters such as torque, rated power, operating speed range, fuel consumption, emissions, noise levels, etc. This is the normal state of affairs. And the injector nozzle geometry is one of the design parameters that can be adjusted.

If someone installs nozzles with different or larger spray patterns, they will disrupt the system's calibration. If they are only focused on increasing power and don't care about anything else, they can increase the fuel injection volume by using larger spray patterns.


That's where I run into a problem.

pump = equal
leitung = same
nozzle = different

In both cases, the desired pressure at the nozzle is 1200 bar.
Is that feasible? In my opinion, no, because 'optimal' is not possible with two different types of nozzles!

why does the EDC also have a different letter code ?

For me, this is an indication that the pump's performance curve is being adjusted to match the larger injectors using EDC (Electronic Diesel Control), specifically the flow rate curve and the start of injection timing.

CU Gremlin.

Gremlin wrote:

for me, it's an indication that the pump characteristic curve is being adjusted to the larger injectors via EDC (specifically, the flow curve and the SB timings)

Hi Gremlin.

if the pump characteristic curve describes the relationship between speed, RWG voltage, and injected fuel mass (which, as we now know, can be limited by the injectors, especially at high speeds, even though the pump "actually" delivers more ), then the injector parameters would also be included there.

That is to say, other nozzles would necessarily require a new pump characteristic curve if the overall system is to remain "under control" . . .