Larger Intercooler: Benefits & Installation

My TDI was tuned by Oberscheider to 130 horsepower and now runs at 1.25 bar of boost. Currently, it has very good responsiveness, even in the lower RPM range, because the 100 horsepower TDI PD has a very small turbo and intercooler! I also occasionally drive a 150 horsepower TDI, which is equipped with a large intercooler located behind the water cooler and in front of the fans. Its responsiveness is very slow, but the torque drop in the higher RPM range (3000-4000) is not nearly as significant as in my 130 horsepower tuned TDI. Now I'm wondering if an A6 intercooler from an 180 horsepower TDI would be good for my 130 horsepower car, or would it completely ruin the responsiveness? I'm especially concerned about the 3000-4000 RPM range, where my current 130 horsepower tuned TDI completely loses power. I think the small turbo and intercooler have a big influence on this. Also, if I install the larger intercooler, I'll have to readjust the boost pressure, which will cost me a lot of money. I believe 1.25 bar of boost is the maximum that the transmission and flywheel can handle with 330 Nm of torque. What do you think?

Hi,

It's a good start that you're concerned about the transmission and flywheel...

In my opinion, it would also be a good idea if you were just as concerned about your charger!
Because it apparently creates a significant portion of the extra power by increasing the pressure.
Well, to generate that higher pressure, the stock turbocharger needs a significantly higher RPM, which can eventually destroy it. And a new turbocharger is definitely not cheap.
You yourself say that the 100-horsepower TDI is a...
small loaders are being discussed.
VW doesn't install a larger turbocharger in the 150hp TDI engine just for fun.
It's also more likely to be the reason for a less responsive feel, but on the other hand, it also provides more stability...
Nothing is achieved without compromise.

I wouldn't even consider another price increase without another supplier.

Markus.

Hi!

Forget about upgrading to the larger linkage.
Do you want to achieve more performance with that?
Unfortunately, 'No Chance' doesn't provide any measurable performance improvement.
I tried it myself, using the LLK (likely referring to a specific component or system) from the 150 HP PD (likely referring to a specific engine or vehicle model).
It didn't achieve anything except for a slightly delayed response.
But the difference was very small.

P.S.: By the way, there's still more to be said about the torque.
My father drives a Polo 9N with a 100 horsepower TDI engine.
is now at 130 horsepower / 350 Nm.
There's probably still a possibility to increase the power to 155 hp / 360 Nm.
However, in the 9N Polo, the location of the LLK (likely referring to a specific component) is not ideal.
However, this performance enhancement works perfectly well with the Golf!


By the way, Tuner offers a 3-year warranty on the motor and the entire powertrain for both versions.

Oiso is half as powerful with 130 horsepower.

Hmm, yes, that could be.
But if I were to add a turbocharger from a 150 hp TDI engine to my current A6 LLK (likely referring to a specific model or modification),...
einbaue kann ich eine deutliche LEistungssteigerung erzielen. Furthermore,
The LLK also improves the thermal balance of the machine, which is crucial for TDIs with high boost pressure!
I agree with you that without any modifications, the LLK (likely referring to a specific component or system) is useless and only results in worse responsiveness.

Okay, just the turbocharger from the 150 HP engine, with the A6 intercooler.
It would not achieve anything more than simply increasing the excess air.

TDI engines already operate with an excess of air, so adding more air wouldn't make a noticeable difference in terms of performance.
You would then need to readjust the injection amount.
I suspect that the PD (pump-injector) elements might not be able to handle the larger injection volume, as they already start injecting fuel much earlier due to the chip. You would need a larger cross-section for the injectors for it to work properly. Have you looked into how much a PD element costs?
You would have to completely remove the entire head from the engine to replace it.

'I have injectors from a 5-cylinder Caravelle installed, but I have a standard TDI, not a PD engine. So, changing the injectors isn't a big problem for me. P.S.: I'm still using the same turbocharger, and the excess air is still sufficient even with the larger injectors.'

Unlike the PD version, you would need to obtain the PD components from a 150 model, and then also adjust the software and the charger, etc.


It's far too complicated and expensive to further upgrade a PD engine beyond the performance gains achievable with a chip tuning. There's a lot of money involved, and we never have enough of it anyway .

Is it still not enough performance for you?

Well, once you've tasted blood, you don't forget, do you?



I know .

Hmm, the biggest problem is mainly the flywheel, which cannot handle further increases in power.
If I were to replace the turbocharger, the intercooler, and the injectors, it would cost a significant amount of money (which I cannot afford ).
'The machine's thermal balance would be completely disrupted. In addition, I would also need to install an oil cooler to maintain the oil temperature.'
I think I'm going to start saving up for a bigger TDI, maybe the 5-cylinder with 4-valve technology in a Golf V, let's see!!! Of course, all of this is just wishful thinking at the moment !!!!

Yes, you are right.

Save money instead.


Best regards,