Air / fuel mixture running rich can remap sort ?

[Scott370z]

Air fuel mixture re-mapping for correct mixture after hi flo cats and invidia n1 exhaust upgrade fitted ? Will this set fuel air mixture for correct emissions to pass mot ? My car is running very rich as exhaust tips show very black appearance.  Advice needed on this thanks in advance.

[Ekona]

If your issue is not being able to pass an MOT with the new cats in place, you have two options:

1. Get the cats red hot before attempting the emissions test, or;

2. Put the stock cats back on for the test. 
 

Hi-flo cats are well known for not passing MOTs sadly. Ignore a remap just to pass, these are your two choices. 

[ZMANALEX]

What he has said:^^^^

 

However once you have finished modding the engine I would recommend a tune, probably Ecutek, to get the "potential performance" benefits of your upgrades.

[Scott370z]

Thanks guys most informative but unfortunately I don't have the old cats as they were shot to pieces inside .

Edited November 10, 2019 by Scott370z