just by going onto Viezu's website and seeing the HUGE range of vehicles with the Huge Potential for different ECUs and Engines to master compared to REVO who specialise in purely VAg brands which use common ECUs throughout the range etc,
i dont know much about viezu but id bet their R&D and experience on VAG engines isnt comparable to REVO. I highly doubt that Viezu have done that much R&D on all those vehicles/engines/ECUs, and thats why its cheaper. You pay for what you get
But alot of tuners have a ong list of makes, check out PDT's site from a couple of posts above, doesn't make them bad.
I geuss having a tdi, I looked at the site and list slightly different, I saw a list of cars that use Bosch ECU's and a lot of comertial vehicles which would normally be diesals.
When I hear Revo, I think of the commonly assoitiated phases like, harsh, aggressive, taken beyond manufacturers limits and that worried me for the old smoker.
Having said that, I know alot of people happy using Revo aswell.