AA HFC hangs low?

warp10 · 07-31-2012, 05:18 PM

Hey guys,

I installed my Active Autowerke HFC Xpipe and I have noticed that the clamp the holds the HFC's to the x pipe hangs below the the car. I will post pics...I am on my iPhone.

newmedicines · 07-31-2012, 08:08 PM

Sorry if its unrelated but what exhaust did you put your hfc with? Did it throw any cel?

warp10 · 07-31-2012, 08:29 PM

I paired it with a UUC cat back here is a video Honestly not sure because it went a head and but in the delete-r. But from other members these will throw a CEL

warp10 · 07-31-2012, 10:00 PM

The clamps that hold the hfc are right up against the heat shield and vibrates under a heavy acceleration. It is just causing some ground clearance issues. Any one else have this issue?

Jbook · 07-31-2012, 11:07 PM

I know what you mean... my AA HFC are easily the lowest part under my car and sometimes scrape on really big speed bumps or if I go up a short steep driveway. As far as the vibration is concerned, just bend the heat shield back and it will fix your problem

warp10 · 07-31-2012, 11:56 PM

Read my post in another thread about what to do to get rid of vibration. You need to bend the heat shield in several places and i listed all the ones to check. You are likely hitting the black "brace" as well and would be better served by removing it and replacing the bolts back on the frame without the black thing. It WILL fit well with no vibration after all this is done.

What pisses me off is why a big company like AA cannot make a factory fitting exhaust pipe. I mean they don't even put all the same hanger points on the thing as they leave out one of them near the high flow cat area. Just not that hard to make something fit like factory. THe thing is its not even the high flow cats that are a bad fit, even though those are the only thing I could understand being hard to fit due to the size. Oh well. worth it for the sound IMO. I love the sound[/QUOTE]

Can you post the link to your thread you mentioned. Also I agree that the sound is worth it!'

persian54 · 08-01-2012, 12:04 AM

I used to have an AA HFC Xpipe

I did like the sound (it was a bit raspy and raw, as I had it hooked up with an OEM rear), but it bothered me that it would sometimes scrape when I went over steep bumps and driveways. it's simply a design flaw

pbonsalb · 08-01-2012, 05:32 AM

V Band clamps do require an extra 3/4 inch on top and on bottom (and on the sides) and this reduces clearance. But they make it easy to install and remove a section of exhaust and they usually don't leak. You can remove it and weld the HFC section in place. You can cut it out and use a 3 inch wide band clamp that fits flush everywhere except the joint (and you can locate that on the side).

s65power · 08-01-2012, 11:38 AM

I had this problem with the Fabspeed setup on the left side. It would hit over speed bumps. I wound up selling that exhaust and never got that resolved.

Some cats have trouble fitting and you have to pound the heat shield to make enough room. I don't have experience with the AA one but it sounds good!

dapopa9 · 08-01-2012, 05:13 PM

Yes it hangs a bit lower than the stock setup. Make sure the heatshield is not touching the pipes...that is most likely what is causing your vibration.

M3PO · 08-01-2012, 05:22 PM

Quote:

Originally Posted by s65power

I had this problem with the Fabspeed setup on the left side. It would hit over speed bumps. I wound up selling that exhaust and never got that resolved.

Some cats have trouble fitting and you have to pound the heat shield to make enough room. I don't have experience with the AA one but it sounds good!

Left as in driver's side? That's strange because you can rotate the driver's side up a bit. On the passenger side, you can't because the flange is welded to the header.

My Fabspeed cats hang low. One has a big dent. This car doesn't work well with round HFC it seems.

SalDoyley · 08-01-2012, 07:55 PM

Nothing you can really do-I tried a bunch to get this up higher

C|3R1C · 08-01-2012, 08:09 PM

I'm trying a way next week to raise the pipe a little (the catback at least) ill let you know how it works.

GIdriver · 08-01-2012, 08:11 PM

Quote:

Originally Posted by warp10motorsports

Hey guys,

I installed my Active Autowerke HFC Xpipe and I have noticed that the clamp the holds the HFC's to the x pipe hangs below the the car. I will post pics...I am on my iPhone.

Hmm... That seems pretty low...

GIdriver · 08-02-2012, 08:28 AM

Quote:

Originally Posted by m3alabama

Do you even have this xpipe? His exhaust is hanging low like everyone's and this is normal for the AA. Why comment when you don't even have this setup!! or never did have it!

Hold it right there, mister. When I saw the picture I was truly amazed of how low the x-pipe hangs. I recently installed the Akra Evo and fits PERFECTLY. If you are implying that I wanted to worry the OP, you are plain wrong! By the time I made the comment it was obvious to the OP that this is usual for the AA x-pipe. If I gave the wrong impression, my apologies to the OP, not to you though. So don't come out swinging with no reason. Last but not least, this is an internet forum, people can make comments.

aus · 08-02-2012, 10:41 AM

Wonder why this hasn't been brought up in the past?

.

Zzhou · 08-02-2012, 03:25 PM

my AA catless x-pipe has kinda same issue with the clamp, i just bend the heat shield and that will help. but still has vibration. I paired with AA exhaust.

edwinm3 · 08-03-2012, 06:37 AM

I don't know what's wrong, maybe it needs some adjustment. Mine is perfectly leveled and no scraping or vibration/rattling

bigjae1976 · 08-03-2012, 08:50 AM

Just hammer and bend it into an oval.

warp10 · 08-06-2012, 09:15 PM

Quote:

Originally Posted by bigjae1976

Just hammer and bend it into an oval.

bend what into an oval??

VCMpower · 08-11-2012, 11:50 PM

It's unfortunate, but they are so effective at the task.

330iTiAg · 08-12-2012, 01:01 AM

Couldn't a muffler shop weld on the missing OEM hanger position(s)?

07-31-2012, 05:18 PM	#1
warp10 Lieutenant Colonel 776 Rep 1,718 Posts Drives: 2011 M3 Jet Black:ZCP, ZCV, ZP Join Date: May 2011 Location: Atlanta, Ga iTrader: (7) Garage List 2011 M3 [10.00] 2011 28i X3 [0.00]	AA HFC hangs low? Hey guys, I installed my Active Autowerke HFC Xpipe and I have noticed that the clamp the holds the HFC's to the x pipe hangs below the the car. I will post pics...I am on my iPhone. Attached Images __________________ Last edited by warp10; 07-31-2012 at 06:53 PM..
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07-31-2012, 08:08 PM	#2
newmedicines Private First Class 7 Rep 187 Posts Drives: Grey Join Date: Jul 2012 Location: Socal iTrader: (0)	Sorry if its unrelated but what exhaust did you put your hfc with? Did it throw any cel?
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07-31-2012, 08:29 PM	#3
warp10 Lieutenant Colonel 776 Rep 1,718 Posts Drives: 2011 M3 Jet Black:ZCP, ZCV, ZP Join Date: May 2011 Location: Atlanta, Ga iTrader: (7) Garage List 2011 M3 [10.00] 2011 28i X3 [0.00]	I paired it with a UUC cat back here is a video Honestly not sure because it went a head and but in the delete-r. But from other members these will throw a CEL __________________ Last edited by warp10; 07-31-2012 at 08:44 PM..
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07-31-2012, 10:00 PM	#4
warp10 Lieutenant Colonel 776 Rep 1,718 Posts Drives: 2011 M3 Jet Black:ZCP, ZCV, ZP Join Date: May 2011 Location: Atlanta, Ga iTrader: (7) Garage List 2011 M3 [10.00] 2011 28i X3 [0.00]	The clamps that hold the hfc are right up against the heat shield and vibrates under a heavy acceleration. It is just causing some ground clearance issues. Any one else have this issue? __________________
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07-31-2012, 11:07 PM	#5
Jbook Lieutenant Colonel 163 Rep 1,506 Posts Drives: '15 FO M4 Join Date: Sep 2010 Location: NorCal Bay Area iTrader: (23) Garage List 2011 BMW E90 M3 [9.44]	I know what you mean... my AA HFC are easily the lowest part under my car and sometimes scrape on really big speed bumps or if I go up a short steep driveway. As far as the vibration is concerned, just bend the heat shield back and it will fix your problem __________________ Fire Orange F82 Built by Alekshop \| Pure Stage 2 Turbos \| Akrapovic Evolution and Downpipes \| ESS T-500 Performance ECU Software \| Evolution Racewerks Chargepipes \| Gruppe M CAI \| Awron Gauge w/ Valve Control \| KW Clubsport \| Brembo GT 380 F&R \| 19" BBS FI-R \| BMW Performance Seats, Aero, and Steering Wheel \| Vorsteiner Diffuser \| IND Cosmetics
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07-31-2012, 11:56 PM	#6
warp10 Lieutenant Colonel 776 Rep 1,718 Posts Drives: 2011 M3 Jet Black:ZCP, ZCV, ZP Join Date: May 2011 Location: Atlanta, Ga iTrader: (7) Garage List 2011 M3 [10.00] 2011 28i X3 [0.00]	Read my post in another thread about what to do to get rid of vibration. You need to bend the heat shield in several places and i listed all the ones to check. You are likely hitting the black "brace" as well and would be better served by removing it and replacing the bolts back on the frame without the black thing. It WILL fit well with no vibration after all this is done. What pisses me off is why a big company like AA cannot make a factory fitting exhaust pipe. I mean they don't even put all the same hanger points on the thing as they leave out one of them near the high flow cat area. Just not that hard to make something fit like factory. THe thing is its not even the high flow cats that are a bad fit, even though those are the only thing I could understand being hard to fit due to the size. Oh well. worth it for the sound IMO. I love the sound[/QUOTE] Can you post the link to your thread you mentioned. Also I agree that the sound is worth it!' __________________
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08-01-2012, 12:04 AM	#7
persian54 Lieutenant General 923 Rep 15,818 Posts Drives: M760/G83M4 Join Date: Jun 2009 Location: The Valley, SoCal iTrader: (298)	I used to have an AA HFC Xpipe I did like the sound (it was a bit raspy and raw, as I had it hooked up with an OEM rear), but it bothered me that it would sometimes scrape when I went over steep bumps and driveways. it's simply a design flaw __________________ From E93 335i to E89 Z4 to E93 M3/E89 Z4 to E350/SL550
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08-01-2012, 05:32 AM	#8
pbonsalb Lieutenant General 5231 Rep 10,614 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	V Band clamps do require an extra 3/4 inch on top and on bottom (and on the sides) and this reduces clearance. But they make it easy to install and remove a section of exhaust and they usually don't leak. You can remove it and weld the HFC section in place. You can cut it out and use a 3 inch wide band clamp that fits flush everywhere except the joint (and you can locate that on the side).
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08-01-2012, 11:38 AM	#9
s65power New Member 0 Rep 20 Posts Drives: 2012 M3 Join Date: Aug 2012 Location: Cali iTrader: (0)	I had this problem with the Fabspeed setup on the left side. It would hit over speed bumps. I wound up selling that exhaust and never got that resolved. Some cats have trouble fitting and you have to pound the heat shield to make enough room. I don't have experience with the AA one but it sounds good!
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08-01-2012, 05:13 PM	#10
dapopa9 Captain 68 Rep 653 Posts Drives: F80 M3 Join Date: Apr 2008 Location: San Diego iTrader: (0)	Yes it hangs a bit lower than the stock setup. Make sure the heatshield is not touching the pipes...that is most likely what is causing your vibration.
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08-01-2012, 07:55 PM	#12
SalDoyley New Member 0 Rep 5 Posts Drives: bmw Join Date: Aug 2012 Location: you are iTrader: (0)	Nothing you can really do-I tried a bunch to get this up higher __________________
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08-01-2012, 08:09 PM	#13
C\|3R1C So Kewl Guy 49 Rep 619 Posts Drives: 2010 E93 M3 DCT Join Date: Sep 2011 Location: Los Angeles iTrader: (3)	I'm trying a way next week to raise the pipe a little (the catback at least) ill let you know how it works. __________________ 2010 E93 M3 / MS Catless X-Pipe / AA Catback / Vorsteiner Vented Hood and Bootlid E93 Trunk / ADV1 7.1 Wheels GB / LS3 LED Lights / Harrop Supercharger
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08-02-2012, 10:41 AM	#16
aus Major General 892 Rep 9,032 Posts Drives: Odysse Join Date: Jul 2005 Location: Seal Beach, CA iTrader: (10)	Wonder why this hasn't been brought up in the past? . __________________ Let me get this straight... You are swapping out parts designed by some of the top engineers in the world because some guys sponsored by a company told you it's "better??" But when you ask the same guy about tracking, "oh no, I have a kid now" or "I just detailed my car." or "i just got new tires."
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08-02-2012, 03:25 PM	#17
Zzhou Captain 57 Rep 600 Posts Drives: 2012 E92 SSII ZCP DCT Join Date: Aug 2011 Location: West Lafayette,IN/Shanghai,China iTrader: (0)	my AA catless x-pipe has kinda same issue with the clamp, i just bend the heat shield and that will help. but still has vibration. I paired with AA exhaust. __________________ AA Green Filter/AA Pulley/AA catless X-pipes/AA signature exhaust/AA TUNE/TMS studs/Project Kics R40/R888/VOLK ZE40/ST60,ST40 BBK/MCS 2WAY NR/Vorsteiner GTS5 Bumper/APR GT250/APR SPLITTER
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08-03-2012, 06:37 AM	#18
edwinm3 Brigadier General 980 Rep 4,001 Posts Drives: F82 Join Date: Nov 2011 Location: Broward iTrader: (32)	I don't know what's wrong, maybe it needs some adjustment. Mine is perfectly leveled and no scraping or vibration/rattling __________________ Grigio Telesto M4, 6MT. Coyote 5.0 F-150 991 GT3
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08-03-2012, 08:50 AM	#19
bigjae1976 Major General 1570 Rep 8,075 Posts Drives: 11 E90 M3 Individual Join Date: Mar 2006 Location: Houston, TX iTrader: (22) Garage List 2004 BMW M3 [4.50] 2011 BMW E90 M3 [5.25] 2013 BMW 328i [5.00]	Just hammer and bend it into an oval. __________________ 2018 F30 320iX Melbourne Red 2011 E90 M3 Monte Carlo Blue 2004 E46 M3 Imola Red 2000 E36/7 Z3 Steel Blue
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08-11-2012, 11:50 PM	#21
VCMpower Banned 25 Rep 873 Posts Drives: 2010 Dakar, 2013 Fire Orange Join Date: Jan 2010 Location: Victoria B.C. iTrader: (0)	It's unfortunate, but they are so effective at the task.
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08-12-2012, 01:01 AM	#22
330iTiAg First Lieutenant 8 Rep 386 Posts Drives: 2011.5 E92 M3 Join Date: Jun 2006 Location: Columbia, MD iTrader: (2)	Couldn't a muffler shop weld on the missing OEM hanger position(s)? __________________ 2011.5 M3 Coupe: Space Gray, 4MY, ZCP, ZCV, ZP2, 494, 5AC, 655, and 752 Mods: Full Venture Shield protection kit, RPi scoops, Euro fog light switch, LUX V4, clear reflectors, OEM black chrome grilles and side gills, black hood vents, IND F10 M5 shift knob and boot
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