AFN with larger VTG loading container is running

Hey everyone,

Replacing the membrane housing on my frequently soot-clogged VTG turbocharger on my '97 AFN went completely smoothly. The mounting points on the new housing (part number 434855-3) are compatible with the smaller original housing (part number 433483-1). The old heat shield was, of course, too small for the new housing, so I ordered a larger one at the same time (number...). R702694-1).

Including shipping and cash on delivery, everything from Schlütter (www.turbolader.com) cost 120 euros.
The phone consultation, including several callbacks after reviewing various documents, was very friendly and helpful, even though my request probably didn't fit into their usual routines, and elsewhere it would likely have been dismissed with responses like "it's not possible" or "you would need a completely different charger," etc.
"It's likely the same situation at VW, if I extrapolate from the response I received from the Rhein-Main service center: 'First, go to your local VW dealer, who will tell you what needs to be done...'" "Renovations are not possible."

The new actuator, while producing an estimated 80% more force, also reacts somewhat more slowly to commands from the engine control unit, as the different control pressures take longer to equalize within its larger internal volume.
What's even more surprising is that, while driving, I found a setting with just one adjustment that works better than the original sensor: it provides good boost even at low RPMs, and yet there are no overboosts, even when accelerating hard in second gear. Come out of idle!
My boost pressure gauge was, of course, extremely helpful in that regard...

Based on my initial impressions, the colleague who was sold a different turbocharger (with a larger housing), a different solenoid valve, and a different engine control unit due to boost pressure problems, may have been taken advantage of – whether knowingly or simply due to a lack of knowledge about cheaper alternatives, remains to be seen.
But the main thing is that someone made a nice profit with what are presumably design flaws (why was the small, weak charging module even installed - which starts to "stumble" with even small amounts of soot buildup - when a 1:1 replacement with the larger module apparently brings no disadvantages?).

On a related note, it would be interesting to know who (given the amount of pressure "from above") decided to equip the TDI models with the larger canisters from the factory.

Well then, congratulations that this whole thing has come to an end.

I believe the part numbers, etc., should be included in the error database because there are many people who are experiencing the same problems, and as Ulf mentioned, some have even had to replace entire turbochargers with new control units simply because the pressure sensor is too small.

Hi.

Quote:

I think the part numbers, etc., should be included in the error database because, in my opinion, there are many people who are experiencing the same problems.

I just updated the entry in the database.

Congratulations, Ulf.

Finally! You've solved your main problem.
I think you'll be able to sleep through the night again in the future.
Nightmares regarding the VTG are a thing of the past.
Many people will likely benefit from your tips regarding the larger container.

Best, Alex.