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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > Mid Pipe/Res Delete/Catted Downpipe
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      08-04-2020, 08:46 PM   #1
twistedmunky
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Mid Pipe/Res Delete/Catted Downpipe

Hi everyone,

I apologise for what might be a stupid question. I currently have the M performance exhaust, BM3 Stage 1 tune and a res delete on my F30. However, I still want a bit more noise.

Here's the question: Is a res delete pretty much the same as getting mid pipes installed? If not, would getting mid pipes increase the noise/improve the sound?

Second question: If I didn't get a mid pipe and got a CATTED downpipe instead, would that increase the noise/improve the sound?

Thanks everyone! Any help would be awesome!
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      08-04-2020, 09:45 PM   #2
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Do you have the N20 or the N26? Getting an aftermarket mid pipe will help the N26 more by eliminating its second catalytic converter. Probably wouldn't make much of a difference on an N20. If you have an N20, you'd probably benefit more (in power and sound) from a downpipe with a high flow cat.
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      08-04-2020, 10:18 PM   #3
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I've got an N20. So you definitely think that a DP would be the better option? Any recommendations?
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      08-04-2020, 10:23 PM   #4
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Quote:
Originally Posted by twistedmunky View Post
I've got an N20. So you definitely think that a DP would be the better option? Any recommendations?
I don't have any direct experience with an aftermarket DP. I only know that I was planning on going with an Evolution Racewerks catted downpipe for my N26. They make one for the N20 as well.
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      08-05-2020, 12:24 AM   #5
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Quote:
Originally Posted by twistedmunky View Post
I've got an N20. So you definitely think that a DP would be the better option? Any recommendations?
I have a similar set-up. Expect 15-20% increase in noise with a catted DP.

You'll hear the turbo quite a bit more also.

Coincidentally, I have new in box catted Wagner DP for an N20 328 for sale if your interested
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      08-05-2020, 04:46 AM   #6
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Thanks Davy, not sure how much it would end up costing me to get it shipped here to Australia haha. I'll definitely do a bit more research about catted downpipes!
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      08-05-2020, 08:41 AM   #7
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Quote:
Originally Posted by twistedmunky View Post
Thanks Davy, not sure how much it would end up costing me to get it shipped here to Australia haha. I'll definitely do a bit more research about catted downpipes!
Once you make a decision on which one you are getting, send me your full address for a shipping quote
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      08-05-2020, 06:20 PM   #8
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Quote:
Originally Posted by mike@x-ph.com View Post
Once you make a decision on which one you are getting, send me your full address for a shipping quote
Thanks mate! I'll definitely check the downpipes out and do more reading about them.
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