The long and short answer is ‘No, Revo software is not undetectable’.
By law, Revo Authorised Dealers will inform you that you are making a modification to your vehicle. You should declare all modifications to your insurance company.
On first glance, there is no reason for your dealer to realise that your engines ECU has had Revo Software previously installed. Revo creates all of our software from full factory software, and write an entire software file to the ECU, as opposed to “data area” files used by other tuners.
As the ECU will have the same ID and function as it would with factory software, it can virtually undetectable by some main dealers. However, if the main dealer drives a vehicle with Revo software installed it will be obvious to the driver that the car has been modified. This could be confirmed by data logging the car and seeing that certain requested ECU parameters are higher than expected for a standard vehicle.
Dealer tools are constantly evolving to incorporate new technology, there is always a possibility that main dealer tools could see that an ECU has been modified and isn’t stock. We would always recommend your vehicle is flash back to stock at a Revo Authorised dealer before any main dealer visit.
We cannot guarantee Revo software will go unnoticed by the main dealer.
VW Group TD1 Code
NOTE: As of 2013, the VW Group online dealer tools have the ability to see software on any modified vehicle. When a modified vehicle is plugged in online it is flagged on the system, this flag is called TD1 please read the below overview:
TD1is the VW Audi Group warranty ‘Flag’ for a vehicle that has been modified, this is something you should all be well aware of. If you’re not then please note; since the change in the main dealer on-line diagnostic tools throughout 2013 performance software can and will be seen when a vehicle is plugged into online at the main dealer. This is the case even if it’s switched to ‘stock’ mode, it is possible although not confirmed that TD1 could be flagged if a vehicle has been flashed with any tool other than the OEM online system. Our recommendation to all our dealers is to make the vehicle owner aware that their warranty will be affected if they have the software installed on their vehicle; this isn’t anything new as we’ve never claimed software is undetectable however prior to the new main dealer systems Revo software did tend to go unnoticed.egacy