What size HJS Catalytic Converter is needed to get rid of exhaust smell

[maupineda]

Would they really fit.............with Euro Headers on an E46 M3?

They need to be modified. If you can source a second hand one, you would have OE high flow cats to harvest.

actually, it would be rather simple as you may just need to shorten the header connections, and clock the flanges to the resonated section.

https://z4-forum.com/forum/viewtopic.php?t=137175

[0-60motorsports]

They need to be modified. If you can source a second hand one, you would have OE high flow cats to harvest.

actually, it would be rather simple as you may just need to shorten the header connections, and clock the flanges to the resonated section.

https://z4-forum.com/forum/viewtopic.php?t=137175

Interesting and good to know! Thanks. I'll keep a look out and maybe even installing those cats on the SS V1 Catless pipes might be a good idea.

[Altaran]

Interesting. Might be worth ceramic coating them to try and keep the heat in.

I don't have my cats coated, but I coated my headers and added thermal insulation on top. Heats up the cats faster than before and it keeps the engine bay cooler.
I only have smell upon cold start, same as my 986 S which is on stock cats.

So coating or insulating cats may do the trick for you.

Gesendet von meinem Pixel 7 mit Tapatalk