BMW E46 M3 - Exhaust Section 1, 2 & 3 Differences - Euro vs USDM Headers - RASP

[@Redline360]

See all of our E46 M3 Parts here: shop.redline360.com/collections/all/bmw-e46-m3-parts

[@Star_Taro]

Very informative thank you! This answered all of my questions!

[@IvanSchlachter]

Thanks, you answered a lot of my questions! Great video.

[@UnapologeticIslam]

Where is the video with the eibach coilovers installed and final look with the wheels?

[@hoomana.9723]

Good information!! Thanks!

[@machina_spirit]

If anyones wanting to know the sound differences of section 1 with a single AR20 resonator welded in I have a few comparison videos on my channel specifically demonstrating it along w the other section 1 setups I’ve had. It definitely also changes the note, makes it less high pitched so just a heads-up if you still want to retain the high pitched top end scream of the S54. Lastly, in my experience replacing the oem section 2 w an unresonated xpipe surprisingly did not increase the exhaust volume, it only seemed to deepen the note a bit and slightly reduce the low rpm drone (but not the rasp! no beating that without resonators lol) Apparently the oem stock section 2 is pretty loud on its own, and pretty good flowing

[@Smokey-mt6ye]

Great video! Do euro headers (with out cats) make it more raspy or just louder? Thanks

[@bentremy]

If you go to Euro/CSL headers and don't change your section 1 you will gonna increase the rasp.

[@alphabetg33k85]

enjoy the 100th like, good info

[@aaaaachew]

Can I ask your opinion on a catalytic converter question. The person I bought my E46M from had euro headers and euro sec 1 with cats installed. One of the cats has now gone bad. What would you recommend as a replacement? Do they sell the 200 cell cats individually or do I need to now look for another euro section 2? And do you sell these? Thanks.

[@bayareagtr5468]

So if I leave the headers as OEM, I can get section 1,2, and 3 and be 50 state smog legal with no CEL?

[@dmheatingplumbing9805]

Great video mate. I’m over in the uk. I’m looking at status Gruppe set ups. Would I gain much from changing my existing stock euro headers being a UK car. Or would you suggest i leave them ? I’m not fussed about power gains if any. Just less rasp. I’m guessing after watching this, my factory stock section 1 will have 2 resonators ? so would you suggest just a back box mufflers would suffice ?

[@ericmknsana2608]

@Redline360 I'm looking to eliminate the raspy tone on my e46 m3... I was told/recommended to replace the "section 1" part. My question is: Section 1 is not a catalytic converter part is it? I have the impression that it was the catalytic converter because it has that large piece on it? Also, I do not plan on replacing the headers. I'm keeping it stock US version and I also do not want to remove my m3's catalytic converter because I don't want it to fail emissions inspection... If indeed section 1 is not a catalytic converter I will replace the OEM one with a CPI or Rogue Engineering one. I'm still doing my research on which brands to choose...

[@ericmknsana2608]

That larger part of the section 1 is the resonator correct?

[@joshanderson3900]

@@ericmknsana2608 yes a resonator look up AR20 or AR25

[@ja_garage]

How did you manage to line up the tips so even? when I installed mine the tips lined up crooked and the driver side tips stuck out a tad bit more than the passenger side.

[@Redline360]

Hey. A lot of it has to do with the factory hangers and the connection to the section 2. We had it a bit off at first too, but when we made those adjustments it fit great. We have the full install video here of the Top Speed exhaust: kzbin.info/www/bejne/pWmpg6CbltxpjtU

[@ja_garage]

@@Redline360 Thanks for the quick reply, I watched that video but I didn't see anything where you guys showed where you adjusted. But if say the hangars can but adjusted I'll give that a shot.

[@emilepapillon2275]

If I want to remain as much OEM as possible and get euro headers on a USDM car, can I just swap in a catted Euro section 1 and re-use my stock DME program and O2 sensors ? Or will I have a DLT code because the reading on the O2 sensors are different since my cats aren't being as effective as in the USDM setup? In other words do I have to code-out anything with a complete OEM Euro conversion or are the DME programs for Euro and USDM cars the same ?

[@Qadi90]

I have this exact question. What was the case with you?

[@emilepapillon2275]

@@Qadi90 you can, no need to recode