Downpipe Brace Question

Young_Man · 02-14-2014, 08:55 AM

On my last E90 I went with the Active Autowerke catless downpipes because they were the only ones that I knew of that had the extra braces welded on. Are there any other downpipes available with the braces like the AA downpipes?

deadmn1337 · 02-14-2014, 10:43 AM

I believe those are the only ones with the braces. I have VRSF and don't have any rattling from them so the brace isn't really needed when done properly.

Jeff@TopGearSolutions · 02-14-2014, 10:44 AM

The brace is really not necessary but yea I think AA is the only one.

Tiago@VRSF · 02-14-2014, 09:51 PM

After over 4 years, hundreds of thousands of collective miles and more than a thousand sets sold we haven't had one issue related to a lack of a hanger

There's a reason all the most popular downpipes don't have that hanger, it's simply not required nor does it negatively affect performance or reliability.

ErzenE92 · 02-14-2014, 10:00 PM

Quote:

Originally Posted by deadmn1337

I believe those are the only ones with the braces. I have VRSF and don't have any rattling from them so the brace isn't really needed when done properly.

how do you like those downpipes? what exhaust are you running with them?

Maniac0908 · 02-14-2014, 10:06 PM

I have vrsf on the xi. Love them. Sound is great with stock exhaust. No fitment issues at all. And you cant beat the price.

deadmn1337 · 02-15-2014, 02:51 AM

Quote:

Originally Posted by ErzenE92

Quote:

Originally Posted by deadmn1337

I believe those are the only ones with the braces. I have VRSF and don't have any rattling from them so the brace isn't really needed when done properly.

how do you like those downpipes? what exhaust are you running with them?

I have xi pipes with the vrsf exhaust. they sound great on stock and even better on upgraded exhausts. nice and deep tone.

roadkillrob · 02-15-2014, 07:35 AM

The OEM downpipes have a flex joint, so that is why they need the hanger as it would stress the flex joint too much if they were not supported. Without the flexjoint, there really is no reason for the support.

BD_F22 · 02-15-2014, 07:52 AM

Quote:

Originally Posted by ErzenE92

how do you like those downpipes? what exhaust are you running with them?

VRSF dps here and they perform great and do their job very well on my xi, its been over 6 months and no issues. I have them paired with the AE exhaust and love it!

BigHoncho · 02-15-2014, 08:06 AM

Quote:

Originally Posted by roadkillrob

The OEM downpipes have a flex joint, so that is why they need the hanger as it would stress the flex joint too much if they were not supported. Without the flexjoint, there really is no reason for the support.

Your first point makes sense!
But wouldn't it also make sense for non-flexible pipes to be supported, since there would be less stress on the turbo outlet?

Ingeniator · 02-15-2014, 08:27 AM

Quote:

Originally Posted by BigHoncho

Your first point makes sense!
But wouldn't it also make sense for non-flexible pipes to be supported, since there would be less stress on the turbo outlet?

I think without a flex point in the downpipes a rigid mount that close to the turbo would be more likely to cause a stress issue. Remember the motor moves in relation to the body.

ErzenE92 · 02-15-2014, 05:12 PM

Quote:

Originally Posted by BD_e92

VRSF dps here and they perform great and do their job very well on my xi, its been over 6 months and no issues. I have them paired with the AE exhaust and love it!

I am waiting for mine to get here so I can install them. I will have them paired with the Corsa exhaust

whiteCanadian335xi · 03-16-2014, 08:18 PM

How much louder will catless DP make my car? For example AR catless for an Xi. Some people say there really isn't a difference until you punch it, then you hear the difference and then at idle you can't really tell.

02-14-2014, 08:55 AM	#1
Young_Man Lieutenant 41 Rep 568 Posts Drives: E90 335i Join Date: Jun 2011 Location: Earth iTrader: (4)	Downpipe Brace Question On my last E90 I went with the Active Autowerke catless downpipes because they were the only ones that I knew of that had the extra braces welded on. Are there any other downpipes available with the braces like the AA downpipes? __________________ AA Signature Exhaust / AA 3" Catless Downpipes / VRSF 7" FMIC / AFE Dual Cone Intake / ER Charge Pipe / Tial Q BOV / RPI Scoops / RB Upgraded PCV & Cap / BMS OCC / Alpina Trans Flash / Powered by JB4 G5 ISO
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02-14-2014, 10:43 AM	#2
deadmn1337 Captain 39 Rep 656 Posts Drives: 2016 EB 435i Join Date: Mar 2010 Location: Long Beach iTrader: (11)	I believe those are the only ones with the braces. I have VRSF and don't have any rattling from them so the brace isn't really needed when done properly.
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02-14-2014, 10:44 AM	#3
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	The brace is really not necessary but yea I think AA is the only one.
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02-14-2014, 09:51 PM	#4
Tiago@VRSF 2095 Rep 43,350 Posts Drives: F90 M5 Join Date: Dec 2007 Location: Doral, FL iTrader: (99) Garage List 2014 F30 328xi [0.00] 2015 F82 BMW M4 [0.00] 2013 Ducati 1199 Pa ... [0.00] 2008 BMW 335i [0.00]	After over 4 years, hundreds of thousands of collective miles and more than a thousand sets sold we haven't had one issue related to a lack of a hanger There's a reason all the most popular downpipes don't have that hanger, it's simply not required nor does it negatively affect performance or reliability.
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02-14-2014, 10:06 PM	#6
Maniac0908 Major 167 Rep 1,415 Posts Drives: Alpine White 07 335xi Sedan Join Date: Feb 2013 Location: Towson, MD iTrader: (2)	I have vrsf on the xi. Love them. Sound is great with stock exhaust. No fitment issues at all. And you cant beat the price.
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02-15-2014, 07:35 AM	#8
roadkillrob Major General 860 Rep 5,447 Posts Drives: 08 335i,22 X3M, 2012 C63 Black Join Date: Jul 2007 Location: Boston iTrader: (15)	The OEM downpipes have a flex joint, so that is why they need the hanger as it would stress the flex joint too much if they were not supported. Without the flexjoint, there really is no reason for the support. __________________ 2022 X3M Brooklyn Grey 2008 E93 335i FBO 2012 Mercedes C63 Black Series Alanite Grey
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03-16-2014, 08:18 PM	#13
whiteCanadian335xi Private 0 Rep 83 Posts Drives: 2008 BMW 335xi Join Date: Sep 2013 Location: Canada iTrader: (0)	How much louder will catless DP make my car? For example AR catless for an Xi. Some people say there really isn't a difference until you punch it, then you hear the difference and then at idle you can't really tell.
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