Your assumption is that there's this sea of tuners who know how to properly tune the DQ250, when in reality it's possible to count them on the fingers of one hand.
Actually, I don't trust most of them, that's why I'm here trying to get the basics so that I can weed out non-professional tuners. Thank you for answering my questions.
If you are already working with TVS, then go to TVS and tell them what you need and pay your money instead of screwing around.
The only downside to TVS is that you can't add small tweaks later (different shift points, etc). So there is no room for experimentation.
By the way, looks like there is a yet another limit of 410nm in diagnostics. VCDS is not displaying anything higher than 410nm (ECU -> TCU torque).
I was offered another approach by a reputable tuner - you set the limit at 410nm (so you can monitor torque in VCDS) and then downscale real torque in EcuMaster to a number where 100% equals 410nm (so if your real max torque is 820nm, you divide everything by 2, etc). Given this is done by an experienced tuner and all calculations/calibrations are done correctly, are there any downsides to this approach?
