I started this thread because I’m new to the mk7 platform and wanted to get my car tuned. I called a local APR installer and I was told about the so called tearing up DSG clutches and I posted it here to get some true outlooks on the subject because I didn’t know anything about it. The last thing I wanted to do was mess up my 2 week old “to me” gti. All I did was tell u guys what I was told to see if it was true. I surely hope ur not blaming me for being misleading and saying anything false. I was trying to get some truth from you guys. That’s why I joined the forum in the first place. To get knowledge from guys who had hands on experience and actual owners so I didn’t make costly mistakes. Knowledge is Power. Forums are the best way to learn and share this. Sorry if I caused any issues here with my thread.
I found this to be a pretty helpful discussion. While it was hearsay, an APR installer‘s comments would qualify as an informed opinion. Where things went a bit off-track was the speculation that came afterward IMO
That said, related to this topic, it’s worth considering that the dq381 is a fairly new transmission (2017 in Europe and 2018 in the US?), so I’m personally interested to see what sorts of issues start to pop up as time goes on - particularly in high torque applications.
Most sources I’ve found online rate the unit at 420-430 NM (309-317 ft lbs)...that manufacturer rating really threw me given the torque produced by even the most conservative Stage 1 tunes. Engineering tolerances are one thing, I just thought that was a lot to leave on the table. The more realistic number to me is 500 NM (369 ft lbs). I first saw that on TVS’ website, but really had a hard time finding anything else to support that. I eventually found the below referenced info which pointed to the dq381 in the Arteon BiTurbo diesel as having 500 NM (Edit: Found one of the dyno charts; now posted at the bottom).
What‘s similarly interesting to me is that not only does that 500 NM figure closely correlate with APR’s Stage I and Stage II low torque (Golf R) tunes, 500 NM is also what the Manhart and Oettinger tunes are rated at. In the case of the Manhart tune, that’s on a Stage III car (their RS 450; running a TTE 535 turbo) making 450 hp (
https://www.manhart-performance.de/en/our-brands/volkswagen/manhart-golf-rs-450/).
To me that suggests that 500 NM is the more realistic manufacturer designed spec. While none of that accounts for the impact of a TCU tune, it does also suggest to me that there may be some significance to that 500 NM number. I guess we’ll see what happens with the HO tunes on DSG cars as time & mileage pile up.
Anyway, hopefully this info saves someone else the effort of trying to dig it all up. /threadjack
Arteon BiTurbo Diesel Dyno -
Source:
https://www.audi-sport.net/xf/threads/dsg-dq381-torque-capacity.379475/
“But because of this I looked further into this and found below very useful information. What we can discuss after this is where in the powerband the 500Nm is and if the real problem is high torque at higher revs which only a gasolin engine can provide. AND if the Arteon TDI maybe has a "TCU map" from the factory which increases the stock clamping factor, but I don't think we'll ever know.
https://www.hoerbiger.com/upload/ebook/2017/motion/2/EN/index.html#47/z
And to confirm the above statement I visited Shells homepage for transmission oil for the Arteon TDI:
https://www.shell.com/motorist/find...xNDBrd19sb25nX2RyYWluX2FydGVvbl9FRnQ4UG5XTWo=
And since they talk about TVS engeineering in the thread you link to I used their site to confirm the 0GC transmission code from Shells homepage:
http://www.tvsengineering.nl/en/gearbox/dsg/dq381.html ”
