Fuel injectors & PD elements

Hi,

Now that it is clear, as described in the technical article, that with a VEP-TDI engine, it is possible to replace the fuel injectors of a 66 or 81 kW TDI engine with a slightly larger version to achieve higher engine performance values.
I wonder if it's that "easy" with PDs as well?

Apart from the price and installation costs!

If so, that would certainly be an alternative to tuning boxes, etc.
Has anyone perhaps done something like that before?

Greetings.
Thomas.

The PD elements are already identical, which is also the reason why PD engines are so easily tunable via chip. The new 2.0 16V TDI might have different...

DaBibo wrote:
The PD elements are already identical, which is also the reason why PD engines are so easily tunable via chip. The new 2.0 16V TDI might have different...
Hello,

Apparently, neither the PD (Positive Displacement) elements nor the integrated nozzles are identical across all PD units, as there have always been ongoing developments. For example, the 'ks' nozzles in the ARL and AXR models improved flow and emission values.

Thomas wrote:
Now that it is clear, as described in the technical article, that with a VEP-TDI, one can replace the fuel injectors of a 66 or 81 kW TDI with the next larger variant to achieve slightly higher engine performance values,
frage ich mich, ob das bei den PD´s auch so 'einfach' geht?

Based on everything I've read so far, it's not possible to use different nozzles in a PD (positive displacement) element. This is probably because the nozzles are permanently bonded during manufacturing, or because only the original nozzle fits into each specific element. I'm also curious why they can't be replaced.

Even in descriptions of very expensive and complex tuning modifications for PD engines, there was never any mention of replacing the PD injectors. Other measures are likely to be significantly more cost-effective, considering the expense of replacing the PD injectors.

Ich stell mal die Frage in die Runde, ob denn die PD-Elemente im 74KW AXR identisch mit denen im 110KW ARL sind, da ja in beiden Typen ks-Düsen stecken. Wenn ja, dann sollten zumindest die PD-Elemente im AXR ein Chiptuning des Motors wohl gut verkraften, oder ?

Greetings, Marcus.