Scott370z Posted November 9, 2019 Share Posted November 9, 2019 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. Quote Link to comment Share on other sites More sharing options...
Ekona Posted November 9, 2019 Share Posted November 9, 2019 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. Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted November 9, 2019 Share Posted November 9, 2019 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. Quote Link to comment Share on other sites More sharing options...
Scott370z Posted November 10, 2019 Author Share Posted November 10, 2019 (edited) 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 Quote Link to comment Share on other sites More sharing options...
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