GLE 167 Diesel

Anyone knows if my vehicle goes into limp mode , would the nox numbers and exhaust read better ? Or worse .

I am trying to achieve this for emission testing . My vehicle has around 20,000 miles and it’s a diesel .

Co, limit max 600 MG/KM

NMHC 24
Nox 150
PM 5.0
PN 6.0 E11

Can I put the car in Limp mode to do the testing and car would be travelling at 50-60mph speed while being testing .

It would be on a dyno .

All good , got it sorted .

It was a sensor that’s faulty .