[Fourdiesel]

Something wrong with that - there are NO electronics on the turbos, ever! Electronics RUN the variable turbo controls but they are part of the ECU that controls the whole engine and are not physically anywhere near near the turbos. Failure of the electronics would not require the turbo(s) to be replaced. (if the electronics fault causes excessive boost at too low a turbo rpm/airflow then that can cause compressor stall that can, in turn, cause the compressor wheel to destruct but as long as the boost maps are factory that is very unlikely)

 

[Bruski54]

I would agree regarding the "electronics" unless you consider the solenoid that actuates the vanes "electronics". It is an electric solenoid that reacts to the signal sent it by the ECU, and it is part of the turbo assembly. Replacing the whole turbo for a bad solenoid seems excessive, but I don't know of any source for just the solenoid -however, I'm sure my shop would just rebuild it, so I'm betting they could source the solenoid.

 

[Fourdiesel]

Yes, there is a servomotor (a vacuum actuating valve on the older TDI engines - think 2000 Golf/Jetta). But the servomotor, if it needs to be replaced, is separate from the turbo. [and more often than not, the servomotor just gets disconnected from the linkage that drives the turbo inlet vane position and a new 'C' clip is all that is necessary.]

 

[JasonLovesLyra]

Great thread and helpful advice from all participants..

Custom Spooling again played a blinder. This guy certainly knows his stuff.

I had a custom tune with him back in the summer 2011, and was most impressed.

So many websites get hijacked by armchair terrorists. This one continues to deliver a great gang of passionate T-Regx owners..

 

[Bruski54]

Well I'm back with a epilogue... I'll try the 'Reader's Digest' version, if you want/need more detail just reply here.
I owned the V10 TDI until 2018. At that time I had moved from Denver and was living in Alpine, WY. The Treg started making a noise so I drove it to the Idaho Falls VW dealer. They told me it was running on 9 cylinders -which was barely noticeable, just the noise hardly any loss of power or decrease in fuel economy. They wanted another $1100 (as I recall) to do further diagnostic. I declined, paid their $110 diagnostic fee and then had my wife drive it over 500 miles to "my guy" in Coeur d'Alene, Idaho. He confirmed the "running on 9 cyl' issue. I had him wholesale at Auction for me and ended up with $2000 in my pocket. Its life ended with over 190K miles on it (at least until the buyer fixed it -I assume.)
I then bought a 2016 Ram Eco-Diesel with about 70K miles. I bought a tuned ECU as well as a Trans tune from Green Diesel Engineering and used it until I was just over 100K miles when I sold it. I only sold it because I had retired and was not driving it. That was about 6 years ago.
Now I am the new owner of a 2014 Treg TDI. I found it with "only" 74K miles on it. My guy in Coeur d'Alene says don't tune/delete it until you start having problems. And with that, I have returned to the fold that is this group! Cheers!

 

[volkswagens-for-life]

Wow and OG that's awesome, welcome!