CSET 414 Report post Posted November 27 I'm a little late to the party with this tune, but finally got around to it. Added shift lights, removed speed cut and selected the most aggressive 'pop & crackle' option as I wish to retain my cats for WOF (or what's left of them). Can confirm that Supersprint exhaust + this tune is something else indeed...! There seems to be a fair bit more you can do with this software, but it's of little interest to me/it sounds pretty risky raising redlines etc. Followed this guy's guide, using BMW flash and ECU worx software: 2 Quote Share this post Link to post Share on other sites
Matth5 265 Report post Posted Friday at 11:00 PM "I wish to retain my cats for WOF" You don't need cats to pass a WOF, they are not a requirement here 1 Quote Share this post Link to post Share on other sites
CSET 414 Report post Posted Friday at 11:44 PM 40 minutes ago, Matth5 said: "I wish to retain my cats for WOF" You don't need cats to pass a WOF, they are not a requirement here Oh great, I heard otherwise; that if they are factory fitted then removing them will fail WOF! Goes to show one shouldn’t believe what ones told, thanks mate! Quote Share this post Link to post Share on other sites
Gaz 485 Report post Posted Saturday at 03:59 AM 4 hours ago, Matth5 said: "I wish to retain my cats for WOF" You don't need cats to pass a WOF, they are not a requirement here You do need them for a WOF if they came from factory with one, been like that for a long time https://vehicleinspection.nzta.govt.nz/virms/in-service-wof-and-cof/general/exhaust/exhaust-emissions 2 1 Quote Share this post Link to post Share on other sites
Matth5 265 Report post Posted Saturday at 08:57 PM They do not read codes or perform an emissions test, and a check-engine light is not a WOF item. So while it may be a requirement in writing, it is not checked and you will not fail a WOF. I've passed my last two WOFs with catless downpipes, and a check-engine light. Quote Share this post Link to post Share on other sites
Gaz 485 Report post Posted Sunday at 12:05 AM Just because you pass a WOF without them doesn't mean that the OP will. I can guarantee that it is checked but not every inspector is going to know the location of the cats in every vehicle so it can be something over looked. If they have any doubts then they can fail you 1 Quote Share this post Link to post Share on other sites
Matth5 265 Report post Posted Sunday at 04:40 AM (edited) Hmm well I even asked the last WOF place if it would be an issue and they said no, I didn't hide it. Well I don't doubt you, guess I was wrong, but I think more places will pass it than not. You can always ask them beforehand if it'll be an issue, and go elsewhere if it is. Edited Sunday at 04:41 AM by Matth5 1 Quote Share this post Link to post Share on other sites
Cab 120 Report post Posted 16 hours ago I wouldn’t worry about failing a WOF due to being catless - I’ve never had an issue on multiple cars over the past 10 years or so 👌🏼 Quote Share this post Link to post Share on other sites
M3AN 2,506 Report post Posted 16 hours ago I've never taken my cat to a testing station, passed every time. Quote Share this post Link to post Share on other sites
andrewm 129 Report post Posted 1 hour ago Passed by a whisker then 1 Quote Share this post Link to post Share on other sites
m325i 324 Report post Posted 1 hour ago I'm not kitten, but maybe he purr-suaded the inspector? You must have been feline good. Cats only drive Furrari's any way Quote Share this post Link to post Share on other sites
