Tried the PD-Powerbox -> performance gain is quite minimal

Hello,

I just measured some DZR (Dynamic Resonance Response) values using a PD (Power Distribution) powerbox.

The manufacturer states an increase from 130 horsepower / 310 Nm of torque to 160 horsepower / 390 Nm of torque. So, a moderate increase of 24%.

My Polo, without any modifications, produces approximately 140 horsepower / 332 Nm according to the DZR (German vehicle registration).

On the test track, the times without using the launch control system were 6.25 seconds, while with the launch control system, they were 5.55 seconds (in each case, 3 runs, always in the same direction, with a tailwind).

According to the DZR (likely referring to a specific performance standard or measurement), achieving a 0-100 km/h time of 5.55 seconds requires approximately 155 horsepower and 369 Newton-meters of torque. That's a full 11% more than without the tuning.
A promise of 24% more...

Conclusion: According to the DZR (German Road Traffic Regulations), this device (I will refrain from mentioning the manufacturer/provider for now) does not even deliver half of the promised increase in power.

Whether this manufacturer has also factored in the upward trend of performance variations that occur due to factory settings. . .

Hello Ulf,
What's the problem with mentioning the manufacturer?

Is there no more freedom of speech and expression here???
This could potentially prevent people from buying that specific item and encourage them to choose a different product instead.
Best regards,

is it possible that the box is actually a 180R resistor?

CU Gremlin.

Gremlin wrote:

Is it possible that the box is actually a 180R resistor?

*ggg*
No, it's a proper active box designed to be integrated into the PDE wiring harness.

Is it possible to easily switch the + line on and off using a switch (instead of a fuse) while the vehicle is in motion, as I would actually prefer?
The ~2-second delay from power-on to the slight jolt in the back suggests that it's actually booting up a complex digital system...

If you absolutely need to know the manufacturer, please send me a private message.

Hm, sounds like KW Systems....

Julian wrote:

Hmm, sounds like KW Systems....

Incorrect... or at least, a different name is printed on it.

What's inside could, of course, still come from the same kitchen... you never know who buys things where and then just puts their own casing around it .
-> Attachment for download.

(The box I tried also doesn't come from the providers listed in the attachment.)

Actually, you have to say that the box isn't that bad after all.
The tuner promised an increase from 130 horsepower to 160 horsepower, which corresponds to approximately a 23.1% increase.
You measured a achieved power output of 155 horsepower, which corresponds to an increase of 19.2%. This means that the tuner actually missed its target by only about 3.1%.
I don't think it's safe to assume that the actual performance of the engine will increase by 23.1%. That's not what the tuner promised, either.
So, the main conclusion is: It's actually not a bad box. If all the other values are also correct, such as boost pressure, etc.

I'd also like to give my car a good run. I'm just afraid of getting a bad unit or a faulty chip.

@ wutz
If you buy a KW-Box, you need to increase the charging pressure by approximately 100 mbar.
'This helps to achieve a good balance between performance and soot production (my tip, based on experience).' Without increasing the LD (likely referring to a pressure setting), it appears black in the back when you want to feel the pressure.
Best regards.

The question is whether to go with a tuning box or chip tuning. I've read the technical article here and I think a good chip might be the better choice, especially because of the limp-home programs. It's apparently not as good with a tuning box. That's why I'm trying to gather everyone's experiences here. And Ulf's tuning box actually delivered good performance, meaning the goal was only slightly missed. The question is, how does it handle the limp-home program? Does this work with this particular device, or does it simply extend the injection time?

Good advice and a wealth of experience are needed here.

Hello Ulf,

When it comes to increasing chip performance, things won't look much different, except perhaps for a few extra horsepower to compensate for increased turbocharger pressure.

A tuner always specifies the achievable maximum power output and then calculates the percentage increase based on the standard factory output (in your case, 130 hp).

It's simply not possible to achieve more than approximately 13 kW with a 1.9 TDI PD engine using a tuning box while still complying with emission regulations and keeping soot levels within acceptable limits. All other specifications from tuner manufacturers are just marketing hype.
In various tests, most tuners have not actually achieved the performance levels they promised.

Hello Ulf,
Did you attach the wrong file?
Is this a post about packaged 10 cent tuning ?

When it comes to smart boxes (which don't necessarily have to be bad), you should...
comparable risks, just like with regular chip tuning, because it involves...
'It also contains a controller with its own software, which was developed by someone.'
plays the sequence of actions that were programmed into it.
The box has fewer degrees of freedom. Due to this reduced complexity it can.
Perhaps it was programmed with less garbage. On the other hand, she also clearly...
fewer pieces of information available for a tuner to use can.
to achieve practical tuning that is optimized for the engine.

The shiftability remains... I don't like it (it's a control instrument for the accelerator pedal).
but that's something everyone has to decide for themselves; if necessary, there are also other options.
a switchable voltage divider in the LMM signal path, which controls the power via the...
Russ field returns.

Best regards, Rudi.

Rudi wrote:

Hello Ulf, Did you attach the wrong file? Is this a post about packaged 10 cent tuning

?
I know. This was just an example to illustrate that the same product can sometimes have different names on it (Hopa / Elstat).
I haven't found anything comparable for PD chargers yet, which is why I did the "proof" with 10c connectors.

Quote:

When it comes to smart boxes (which don't necessarily have to be bad), you should... comparable risks, just like with regular chip tuning, because it involves... "It also contains a controller with its own software, which was developed by someone." plays the sequence of actions that were programmed. The box has fewer degrees of freedom. Due to this reduced complexity it can. Perhaps it was programmed with less garbage. On the other hand, she also clearly... fewer pieces of information available for a tuner to use can. to achieve a practical, engine-friendly tuning solution.

Exactly. I fundamentally distrust the increased freedom offered by tuners: Overloading the turbocharger and head gasket due to pressure increases, and again, overloading the head gasket due to premature fuel injection, etc.

A vending machine, on the other hand, can only "dispense" additional doses, and the potential side effects are much less predictable.
My engine, according to the logs, closes the PDEs (pre-detonation control) already at the top dead center (TDC) when reaching Pmax, so a piston meltdown due to excessively long injection times is practically impossible, as long as it doesn't get completely dark behind me (because the boost pressure is not increased ).

The risk of increased exhaust gas temperatures remains. However, I'm willing to accept that trade-off, given that I only occasionally need the extra power, and I'm foregoing the "performance advantage" that a CT setup offers compared to speakers.

Quote:

Does the switching capability remain...? I don't like that (control instrument: accelerator pedal)

I wouldn't dare to try to precisely match the series performance based solely on feel, even though the amount of fuel requested is significantly higher at low RPMs compared to higher RPMs, given the same pedal position.

Furthermore, I generally prefer to perform DZR tests using the standard settings, in order to always have a comparison with the initial state - and, of course, to conserve materials .

knuddel007 wrote:

My transit times are 6.5 seconds without the BOX, and 4.95 seconds with the BOX.

"At least this one offers a 31% change, unlike the measly 11% I experienced with the box I tried."

What kind of car are you driving?

Hello Ulf,
My control box is from Hopa, was installed at Hopa in Senden, and was programmed on the test bench.
As far as I could see, it can...
The amount of fuel injected can be programmed based on the engine speed.
2. The threshold at which the additional power is engaged can be adjusted for each speed setting.

The part isn't bad, but a proper chip is better. That's because all the information from the limit field parameters is stored in the engine control unit. The control unit must first calculate the required information based on the injection duration for each engine speed.

I chose the box because I want to be able to take it with me in the next car.
The money for a proper chip would be gone with the next car.

Sincerely,
Cuddly007

knuddel007 wrote:

My box is from Hopa, was installed at Hopa in Senden, and programmed on the test bench. As far as I could see, it can... The amount of fuel injected can be programmed based on the engine speed. 2. The threshold at which the additional power is regulated can be adjusted for each speed.

It's a nice thing when, as a customer, you are allowed to have a say .
Is there a TÜV (German technical inspection) report available for this? (Only if you want to answer that question.)

Quote:

A control unit must first calculate the injection duration for each engine speed based on the injection time data.

...which would likely manifest as somewhat sluggish reactions to accelerator pedal movements.
However, it wouldn't be that important to me because I usually drive in the standard mode.

I somehow suspect that Ulf bought his speakers from the same manufacturer again... or maybe not? I've already looked at their website, but I can't decide. If it's only 11%, then I'm going to stay away from it!

Matthias.