Thread: Bootmod 3 Tune
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      05-13-2019, 03:31 PM   #9
_BSMM5
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Drives: 2015 M3
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Quote:
Originally Posted by Dwaynos View Post
Just bang them on and worry after. Seriously though, apparently it's supposed to be worse until the ECU realises there is a problem then alters fueling, I.e. 100-200 miles Is a number I've seen. Or until its tuned for catless.
Well to be honest, its one part the smell (which truthfully isn't the biggest deal to me).

Second part is the lady friend wildly disagrees with the idea of removing the cats for the sake of saving the environment - to which part I somewhat agree. I feel a little bit selfish removing the cats just for some sound and HP gain.

I know with the *blah blah blah you shouldn't drive a sports car and ride a bicycle*. I'm not against having fun but I read a study that 1 cat-less vehicle produces the same amount of hydrocarbon output as 600 catted vehicles...

I thought about adding in 200 CEL cats in the midpipes to counteract this a bit but I'm pretty sure they wouldn't get hot enough to make any difference in filter, but may kill the smell.

What to do..
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