MOT Failure on Emmisions

[glynmitch]

My bus went in for it's MOT today and failed on the emmisions. They said the Lambda probe was faulty and replaced it but it is still not passing the MOT. I contacted Wallace Performance where I had my remap done and they claim that no remap of theirs will fail on emmisions and that it may be another problem.

Wallace want £75 p/h to diagnose the problem and I don't fancy letting my local MOT station at it either as they were just blaming the remap.

Any help appreciated.

[dannysport18]

how hot was the car when tested
me i pased a mod with only a sports cat on my Zaffy but i dont have a Remap how high was it can you scan in the print out please ?
me i would give the car a service new oil an plugs with air filter should do it.

[AndyM]

There are 2 Lambda probes, also, do you still have the pre-cat, may be worth fitting that back on just for the MOT? A re-map shouldn't cause it to fail the emissions.