Dyno issues

[Cupra Belfast]

I've been experiencing issues when dyno testing. I'm logging my runs with my JB4 mobile app. On road logs the car is peaking at 1.7 bar (24.8 psi) and holding around 22 psi or 1.5 bar. It's working on a boost add map 6. There are no issues. The logs look great on the road and can be done performed consistently back to back. On the dyno the car seems to pull the ecu boost. Resulting in peak at 19.8 psi. The O2 sensor is tricked by a hjs mini cat O2 spacer (thought it would be a gimmick, it works. Previously used future use D set to 90). There are no lights issues. I have a Ross Tech vcds cable. It's reading clean, asides of the things that get confused whend on the dyno. I've noted the Golf R has a dyno mode. To disable the rear wheels plus traction control etc. Does the Cupra have similar to stop the car getting confused on the dyno? Has anybody tried the hazards key off & pumping the throttle trick used for the Golf R to see if it does anything or not? Thanks for the help in advance.

 

[Cupra Belfast]

I tried out the method detailed as per the Golf R. It engages a dyno mode. Will get her on the rollers again and reclaim the psi the daft electronic nanny is evidently stealing.