Änderungen 115 PS > 150 PS TDI Golf Vier | Posts 32+

Okay, now everything is assembled and it fits!

Contrary to all opinions on the topic of 'adapting a different engine control unit to the immobilizer,' here's my experience:

The three keys are 'linked' to the speedometer.
I didn't replace the speedometer.

The speedometer, in turn, communicates with the immobilizer, and I haven't replaced that either.

The engine control unit (ECU) is different, and it was this specific ECU that shut off the engine after 1 second.
VW claims that you need to access the main system and that you require the old control unit as well as the vehicle identification number, etc.

Fortunately, that's WRONG!

The simple diagnostic device (tester) 1552 was sufficient!
First, the errors from the WFS were read and deleted.
Then, I adjusted the MSG and also cleared any errors there.

The car is working again with all 3 keys! (It took about 2 minutes).

So, I've finally installed the ARL engine with the DRW transmission in my car, and I'm (hopefully) going to be happy with it.

A driving experience report will follow later; for now, the focus is on driving carefully and getting used to the car.

Thank you to EVERYONE who helped me! (I had to pay the most important ones anyway... ).

Hi,

This may not be directly related to the topic, but I just wanted to correct something.

Quote:

Well, if the chip is correct, the PD_115 should also perform well. The one my acquaintance has produces 140 horsepower and 408 Nm of torque. Forum> is happily driving it with 130,000 km on the clock. With a larger turbocharger, I've already seen stable power outputs of 190 hp / 538 Nm with the PD_115 engine. However, that requires a racing clutch. "The 190 horsepower was a previous attempt by my tuner. I believe the PD_150 model has the VTN20 turbocharger, while the others have the VTN17." Großer Lader an den PD_115 dran, Software geändert , Kupplung geändert und dann Prüfstand. Das Measurement protocol. I held it in my hands, and at approximately 2100 RPM, it recorded a torque of 538 Nm. I think the detuned version only has 470 Nm of torque; I should check that. Definitely, that engine had become a real 400CDi nightmare.

The ARL has a GT1749VB turbocharger, not a VNT20.
The VNT 20 is only used with the 2.5L engines. This is partly due to the response characteristics and the amount of exhaust gas available.

I simply find it impossible that the 115 hp TDI engine "only" produces 538 Nm of torque with the larger turbocharger and software modification. It's the same kind of thing as this Golf 3 from Rothe Motorsport, which supposedly has 580 Nm of torque and 204 hp with the standard transmission!
Test benches sometimes provide values that are more wishful thinking than reality. If you investigate further, you quickly notice that the tuners remain silent or even react aggressively. The same goes for Wendland, who convert a 1.9L TDI engine from VW to common rail. Why would they do something like that?
With a real 538 Nm of torque, not much will likely remain of the transmission. Furthermore, the PD (common rail) injectors are probably too small to deliver the necessary amount of diesel into the combustion chamber within a reasonable timeframe.
It's no coincidence that ASZ/ARL uses larger PD elements.
I also think that the 190 hp is a bit excessive, but that seems to be within achievable ranges. But over 500 Nm... I really don't know how such numbers are always achieved. I don't want to rule out that the engine has a huge peak in the curve at 2100 rpm, but I can't imagine that it could be that much, even with the best will! A clean result would be a smooth torque curve, and not a peak at 2100 rpm, after which it's all over.

I'm curious to know which tuner it was.

Greetings.
Thomas.

Okay, Thomas, I respect your opinions and beliefs, but I've now seen three vehicles (with different inspection reports) that have been modified in a similar way, and they all had approximately 190 horsepower and 540 Nm of torque. The first modification was done almost 100,000 kilometers ago.

I also doubt that the transmission will last another 300,000 km, because the cars are driven very aggressively (and I mean that literally), which puts a strain on the bearings and components, etc.

The torque value peaks at approximately 540 Nm at 2100 RPM, but remains relatively flat until around 3600 RPM, where it then gradually decreases. (It's almost a rectangular curve).

I am also aware that test benches can sometimes produce nonsensical results, and therefore I understand your assumption. That's why I deliberately didn't mention any specific tuner publicly, so that people wouldn't accuse me of advertising.

I'm actually quite sure that the VTN20 was installed, but I'll double-check it just to be certain, so that nothing is incorrect.

>500Nm

So, I've been on the dynamometer twice so far, each time with torque values well over 300 Nm with my AHF.

Reason: The measurement was taken in 4th gear instead of 5th gear.
If I now shift into 3rd gear, my late AHF will probably also reach 500 Nm.
It is relatively easy to identify such a modification: the engine's peak power RPM is shifted downwards by the difference in gear ratios.

I can only speculate as to why the measurement was taken here, contrary to the operating instructions.
The "uninformed" customers then get excited about such "measurements" .

The value of any test stand result is only as good as the person operating the test stand.

Best regards, Rainer.

'The Rothe engine has 196 horsepower and 404 Nm of torque. Currently, one is for sale at a large online auction house. Search for 'Rothe' and 'TDI'. The tuner websites list it with approximately the same power output. I think the 404 Nm figure is still realistic.'
The original transmission is also specified. How long it will last...

Hello Ralf,

Yes, with almost 200 horsepower, 400 Nm of torque is realistic.

Regarding the above 540 Nm values:
At 3600 revolutions per minute, the crankshaft makes 60 revolutions per second.
With a radius of 1 meter, the circumference is 2 * π * 1 meter = 6.28 meters.
The speed is 60 * 6.28 = 376.8 meters per second.
With a torque of 500 Nm, the power output is 376.8 * 500 W = 188.4 kW, which is equivalent to 256 horsepower.

256 horsepower is not equal to 200 horsepower, which clearly proves the absurdity of the torque figure mentioned.
Without any magic, but purely using the formula collection from the 8th-grade physics class. You don't even need a driver's license for that.

Best regards, Rainer.