2019 A3 Quattro 2.0 IS38 EQT Stage 2 staged, EQT DSG IS38 Tune, IE catted downpipe
When i wot and hold it, loss boost at 5k rpm and not recovery, if i wot and i momentary on/off throttle, no issue, i put my older 15k revision J Diverter Valve on it, for try, and no change.