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      07-05-2022, 09:09 AM   #1
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Exhaust questions

Hey guys, long time lurker, I am looking to do some exhaust modifications on my 2020 m340i but had some questions. I see most custom exhausts dont have a muffler, or have a really small one. What would be the difference at that point in just doing a muffler delete? Also if anyone has videos of what the drone is like with a muffler delete, I would love to hear. I had a muffler delete on my old 430i and if was no drone at all.
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      07-06-2022, 08:15 AM   #2
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Just install one of our downpipes leave the rear alone. Muffler deletes rarely sound good just tons of bass..

If you want more delete the resonator
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      07-06-2022, 09:17 AM   #3
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There's a lot of drone with a muffler delete as mentioned above, just get a downpipe.
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      07-06-2022, 03:04 PM   #4
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Quote:
Originally Posted by Info@mad-us.com View Post
Just install one of our downpipes leave the rear alone. Muffler deletes rarely sound good just tons of bass..

If you want more delete the resonator
Could you recommend a good downpipe that won't thrown a CEL, preferably the cheapest one possible 😅
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      07-06-2022, 03:44 PM   #5
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Originally Posted by rlkant18 View Post
Could you recommend a good downpipe that won't thrown a CEL, preferably the cheapest one possible 😅
If you have a 2020 just get a tune after to turn it off. If not you can do the AA catted downpipe. It's not cheap though.
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      07-06-2022, 03:48 PM   #6
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AA Catted DP + Dinan Acleback....... Thank me later
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      07-06-2022, 05:26 PM   #7
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Quote:
Originally Posted by rlkant18 View Post
Could you recommend a good downpipe that won't thrown a CEL, preferably the cheapest one possible 😅
Active Autowerke is the only downpipe that will not trigger the check engine light.


Quote:
Originally Posted by ergarza View Post
AA Catted DP + Dinan Acleback....... Thank me later
+1 on this combo
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      07-06-2022, 06:09 PM   #8
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Originally Posted by ergarza View Post
AA Catted DP + Dinan Acleback....... Thank me later
I also back this combo. Let me know if you want some sound clips.
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      07-06-2022, 07:06 PM   #9
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Quote:
Originally Posted by Info@mad-us.com View Post
Just install one of our downpipes leave the rear alone. Muffler deletes rarely sound good just tons of bass..

If you want more delete the resonator
M340s do not have resonators.
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      07-06-2022, 08:00 PM   #10
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Quote:
Originally Posted by k4sh_90 View Post
Quote:
Originally Posted by ergarza View Post
AA Catted DP + Dinan Acleback....... Thank me later
I also back this combo. Let me know if you want some sound clips.
Quote:
Originally Posted by k4sh_90 View Post
Quote:
Originally Posted by ergarza View Post
AA Catted DP + Dinan Acleback....... Thank me later
I also back this combo. Let me know if you want some sound clips.
Let's hear it!
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      07-06-2022, 08:36 PM   #11
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Quote:
Originally Posted by xnick101 View Post
Quote:
Originally Posted by rlkant18 View Post
Could you recommend a good downpipe that won't thrown a CEL, preferably the cheapest one possible 😅
If you have a 2020 just get a tune after to turn it off. If not you can do the AA catted downpipe. It's not cheap though.
Quote:
Originally Posted by xnick101 View Post
Quote:
Originally Posted by rlkant18 View Post
Could you recommend a good downpipe that won't thrown a CEL, preferably the cheapest one possible 😅
If you have a 2020 just get a tune after to turn it off. If not you can do the AA catted downpipe. It's not cheap though.

I thought about this, but I don't want to void my warranty just yet. What about using an o2 spacer?
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      07-07-2022, 10:16 AM   #12
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AA catted downpipe won't throw a code. You won't need an o2 spacer.
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      07-07-2022, 11:21 PM   #13
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Quote:
Originally Posted by gdaddy28 View Post
Quote:
Originally Posted by k4sh_90 View Post
Quote:
Originally Posted by ergarza View Post
AA Catted DP + Dinan Acleback....... Thank me later
I also back this combo. Let me know if you want some sound clips.
Quote:
Originally Posted by k4sh_90 View Post
Quote:
Originally Posted by ergarza View Post
AA Catted DP + Dinan Acleback....... Thank me later
I also back this combo. Let me know if you want some sound clips.
Let's hear it!
Here you go. Taken from inside the car.

Car is in Sport Individual - Engine in Sport Plus, Transmission in Sport, Steering in Comfort

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      07-11-2022, 03:07 PM   #14
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Quote:
Originally Posted by rlkant18 View Post
Could you recommend a good downpipe that won't thrown a CEL, preferably the cheapest one possible 😅
Our downpipe and a big Daddies o2 minicat.
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      07-12-2022, 11:43 AM   #15
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Quote:
Originally Posted by k4sh_90 View Post
Here you go. Taken from inside the car.

Car is in Sport Individual - Engine in Sport Plus, Transmission in Sport, Steering in Comfort

https://youtu.be/VJq8weAT_mk
The camera doesn't capture it as it really sounds. Just my Dinan with stock DP is louder than that IRL, . Also, this doesn't capture the drone when cruising at low RPMs (even with the valves closed) that the Dinan is known for.
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      07-12-2022, 11:57 AM   #16
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Quote:
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The camera doesn't capture it as it really sounds. Just my Dinan with stock DP is louder than that IRL, . Also, this doesn't capture the drone when cruising at low RPMs (even with the valves closed) that the Dinan is known for.
Yeah, I was trying with different holding points. Figured by the window would work but I think I got more wind noise than anything.
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