B58 midpipe + downpipe?

GA/\/\/\/\A_CT · 02-21-2021, 08:31 PM

Anyone pair a midpipe and catted downpipe on their b58 car?

I was looking at Dinan midpipe and waiting to see what catted downpipes are available...

Is there another midpipe that is cheaper and/or better fitment to variety of downpipes?

Any gains on dyno from a stage 1 tune, by adding downpipe and/or midpipe?

Skyhigh · 02-22-2021, 05:12 AM

A downpipe alone will give you noticeable (although not massive) gains.
Not sure what you expect from a mid-pipe. Replace the entire exhaust or do an axle-back replacement (E.g. BMW MPE).

apex_crisis_ · 02-22-2021, 07:51 AM

I have done a catless Wagner DP with the Dinan midpipe. Connected very easily, didn't need to modify anything. As above, only the downpipe would give you any kind of performance gains. Midpipe is only for sound as it gets rid of the resonator(s). The Dinan midpipe also fitted on to the stock backbox easily without any modification (apart from cutting the stock midpipe to separate it from the backbox).

PeterWT · 02-22-2021, 04:09 PM

I have the CTS 200 CPSI cat DP and the Dinan mid-pipe. I think it is a little too loud and a little too raspy.
I had the mid-pipe with the stock cat and thought the sound was PERFECT. So, I am disappointed and considering having a bottle type resonator installed in the mid-pipe.

parch8 · 02-22-2021, 10:27 PM

Quote:

Originally Posted by PeterWT

I have the CTS 200 CPSI cat DP and the Dinan mid-pipe. I think it is a little too loud and a little too raspy.
I had the mid-pipe with the stock cat and thought the sound was PERFECT. So, I am disappointed and considering having a bottle type resonator installed in the mid-pipe.

I had the same thing happen with me I had a vibrant resonator installed back in the mid pipe and it helped a lot to clean up the tone

weehe126 · 02-22-2021, 11:10 PM

As mentioned, dp will add power, midpipe is just sound. If you just want a little more sound after adding the dp have the larger resonator in the stock midpipe replaced with a straight pipe for cheaper than the dinan midpipe.

mike@x-ph.com · 02-23-2021, 09:55 AM

Downpipe will get you more power than a midpipe. In terms of sound, both will offer more volume.

The Dinan midpipe will fit any downpipe, I recommend the active autowerke catted downpipe to avoid any CEL .

02-21-2021, 08:31 PM	#1
GA/\/\/\/\A_CT Lieutenant 216 Rep 582 Posts Drives: ‘20 m340ix Join Date: Jan 2018 Location: CT iTrader: (0)	B58 midpipe + downpipe? Anyone pair a midpipe and catted downpipe on their b58 car? I was looking at Dinan midpipe and waiting to see what catted downpipes are available... Is there another midpipe that is cheaper and/or better fitment to variety of downpipes? Any gains on dyno from a stage 1 tune, by adding downpipe and/or midpipe?
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02-22-2021, 05:12 AM	#2
Skyhigh Brigadier General 1879 Rep 3,860 Posts Drives: BMW F36 Join Date: Apr 2018 Location: Europe iTrader: (0)	A downpipe alone will give you noticeable (although not massive) gains. Not sure what you expect from a mid-pipe. Replace the entire exhaust or do an axle-back replacement (E.g. BMW MPE). __________________ "Large increases in cost with questionable increases in performance can be tolerated only in cars and women."
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02-22-2021, 07:51 AM	#3
apex_crisis_ Private 50 Rep 97 Posts Drives: 440i GC Join Date: Jan 2019 Location: London iTrader: (0)	I have done a catless Wagner DP with the Dinan midpipe. Connected very easily, didn't need to modify anything. As above, only the downpipe would give you any kind of performance gains. Midpipe is only for sound as it gets rid of the resonator(s). The Dinan midpipe also fitted on to the stock backbox easily without any modification (apart from cutting the stock midpipe to separate it from the backbox).
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02-22-2021, 04:09 PM	#4
PeterWT Lieutenant 253 Rep 558 Posts Drives: '17 M240i, AT, BSM Join Date: Dec 2016 Location: Florida, USA iTrader: (0)	I have the CTS 200 CPSI cat DP and the Dinan mid-pipe. I think it is a little too loud and a little too raspy. I had the mid-pipe with the stock cat and thought the sound was PERFECT. So, I am disappointed and considering having a bottle type resonator installed in the mid-pipe. __________________ My 2017 M240i: MHD, xHP, Modded OE Intake, AA GESi 400 CPSI Cat DP, Dinan Mid-pipe, M Performance LSD & Rear Diffuser, BMS Exhaust Tips, Apex EC-7 Wheels, M-Tech Front Lip, iND Painted Mirror Caps, Smoked Reflectors
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02-22-2021, 11:10 PM	#6
weehe126 Brigadier General 1161 Rep 3,185 Posts Drives: 2017 340i Join Date: Apr 2014 Location: San Antonio iTrader: (2)	As mentioned, dp will add power, midpipe is just sound. If you just want a little more sound after adding the dp have the larger resonator in the stock midpipe replaced with a straight pipe for cheaper than the dinan midpipe.
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02-23-2021, 09:55 AM	#7
mike@x-ph.com BimmerPost Supporting Vendor 24095 Rep 190,633 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Downpipe will get you more power than a midpipe. In terms of sound, both will offer more volume. The Dinan midpipe will fit any downpipe, I recommend the active autowerke catted downpipe to avoid any CEL . __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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