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New 2002+ rear bumper, Magnaflow tips on 2001 Avant (updated August 2005)

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Old 08-05-2004, 09:24 AM
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Default New 2002+ rear bumper, Magnaflow tips on 2001 Avant (updated August 2005)

Special thanks to Eric Schwenter (aka: schwank) for guiding me through this upgrade (FYI - we both had pre-2002 avants prior to the bumper/tip upgrade).

Well, I picked up my Avant from Wagner Motors Body Shop (Shrewsbury, MA) last week. Unfortunately, the new rear bumper cost $900 to a little old lady who hit me on July 5th. She wanted to settle this without the insurance company (luckily, she lives 4 miles from my house..and I felt that I could trust her). It only took them a few days to replace/repaint it. The only issue they had was trying to install the lower black plastic exhaust shield between the lower bumper valence and the body. I don't have the exact audi part#'s for what they added...but I'm pretty sure of these two parts (thanks Eric!!):

Rear Bumper Cover 4B9-807-303BGRU $413.93
Rear Bumper Filler (Valance, I think) 4B0-825-217G $72.53

I learned that in a pre-2002 Avant, there is a black plastic exhaust shield that protects the body for the heat from the exhaust tip. With the slight bend to the exhaust tip in my 2001 Avant, I can see how this piece would be needed (as heat tends to increase where exhaust piping bends...friction etc.). In 2002+ Avants etc, this black plastic exhaust shield is remodeled to function as a lower attachement for the interior bumper..to the body...and not to protect it from heat. Currently, I don't have that lower piece of black plastic (and I wish I had a picture to show everyone) and I don't think it has any barring on the stability of the bumper. The body shop guy at Wagner said that won't make a difference (and he knew how I was planning to mod my exhaust for this project...he was cool about it). I have also looked under the rear bumper of a 2004 Avant and confirmed this as well. All that is present is a couple of support pieces between the lower bumper (behind the valence) to the body...very basic. As for the exhaust shield...you won't see one on a 2002+ Avant (I assume do to the fact that the exhaust tips are straight and not curved...which makes sense). After I picked up my Avant from the body shop, I quickly searched the internet and Audiworld (thanks for everyone's input) to see what kind of tips I wanted. I determined that the Magna Flow (#35163) 3" tip was the best fit. I purchased them from COMPLETEEXHAUST.COM for $80 (shipped).

See also rapid parts for a selection (without the magnaflow logo):
http://www.rapidparts.com/rpeProdDetail.ASPx?a=1304

<img src="http://pictureposter.audiworld.com/32631/rearview_comparison.jpg">
<img src="http://pictureposter.audiworld.com/32631/sideview_comparison.jpg">

Per Magnaflow's website:
Polished Stainless Steel Double Wall Tips have a big look even with a smaller core. They stay cooler and resist discoloration. A great choice to complete your custom exhaust.
FYI - The new tips have a 15 degree angle cut to them and the MagnaFlow logo on the top side. The logo isn't really that visible (depending on how clean they are).

I then called my local Audi Tuner shop (Shine Racing in Walpole, MA) to schedule the install. They said that I needed to make sure the new tip had an inlet diameter the same as my existing muffler. In the case of my stock 2.8 muffler, I learned that the stock diameter was 2" (probably 2.25" on a 3.0, 2.7T and 4.2) and the MagnaFlow tip was 2.25" (FYI - MagnoFlow doesn't offer a 2" inlet diameter tip; 2.25" is the smallest they offer). To address this problem, Eli from Shine Racing sent me to a local NAPA autoparts store to pickup up some exhaust adaptor rings (cost: $9..no biggie). As the old tips were removed, the new tips (and adaptor rings) were tack welded so I could decide on how much I wanted the tip to protrude from the bumper.

It only took Shine an hour to complete this install...and cost me $70 in labor. Thanks Eli!

<img src="http://pictureposter.audiworld.com/32631/exhaust_tips_comparison.1.jpg">
<img src="http://pictureposter.audiworld.com/32631/shine_racing_weld_job.jpg">

All-in-all, I like the look. It is about close to OEM as I think I can get. Which was my main objective (a no-coffee-can-ricey-racer-leaf-blower-exhaust for me...thank you! Ha!).

Some learnings:
1)The rear black valence is a separate part on the 2002+ bumper versus my 2001 bumper. If someone wanted to add an aftermarket parktronic-like device to their 2002+ A6, they could spend the $100 on the new valence to keep it OEM-like. Just a thought.
2) If I had $500-$600, I could've purchased a new 2002+ bumper/valence, had a body shop paint it for me and installed it myself (but this accident saved me that time/effort/expense etc).
3) Not all exhaust tips are created equal. The double-wall tips seem to stay cool, even after 3 hours in the car (which keeps my new bumper from melting)
4) These new tips sit slightly higher/closer to the black valence than a stock 2002+ 3.0 Avant (not sure about the S6 avant, allroad etc). However, the stock tips on 2002+ Avant are only 2.5" (I think) and don't completely fill up the stock opening.
5) Anyone with a 2002+ A6 can add bigger tips (without upgrading the stock exhaust) for approximately $150+. In my opinion, I think a 3" tip still looks OEM without that aftermarket look/feel. Again, just my .02.
6) For those that are considering using a dremel etc to modify their pre-2002 bumper/valence, you'll need to cut through the existing black plastick exhaust shield in the process..just an FYI.
7) The 4.2/S6 lower rear black valence is different than a 3.0/2.7T model. The S6 valance has an upper lip to it just above the exhaust tips. I'm not sure if this valence would fit my new bumper..or a 3.0/2.7T for that matter (because of the wider bumper in general). Anyone willing to spend the $100 on the part to let us know?
8) I believe the Avant and Sedan have a different rear bumper because of the way it slops near the rear hatch (just below the license plate).

Total out-of-pocket costs for the bumper and new tips: $160
Hopefully, I don't back into an icy snowbank this winter and mess up my exhaust system.....that would suck!

See my comparison pix as I've pulled some pix from a few select AW members (forgive me, as I forget who's pix is who's) and audiusa.com. All I need to do is debadge my rear hatch and remove the "A6" and "2.8"....but I would never REBADGE my car as a S6 (even though the dealer always mistakes it for a S6 Avant when I bring it in for service).

Enjoy!!
-ted (from Boston)
Old 08-05-2004, 09:33 AM
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Looks GREAT! Nice writeup!
Old 08-05-2004, 09:43 AM
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Ted, as usual, great write-up!
Old 08-05-2004, 09:47 AM
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Default Great write up.. when did Mitch get the MTM exhaust... last time i saw him

his is stock.
Old 08-05-2004, 09:54 AM
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You are probably correct. Not sure. I thought it was MTM.
Old 08-05-2004, 10:07 AM
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Default Very nice, Teddy

Looking forward to meeting you on Monday?
Old 08-05-2004, 10:26 AM
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Thanks..... I prefer to post quality info.....not quantity. Ha!
Old 08-05-2004, 10:27 AM
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are joo talking about me!!! =PPPPPPP
Old 08-05-2004, 11:15 AM
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Default You call that a write up?

Just kidding, this should be in Stoney's Archives, great write up!

Looks great too!

I completely took out the reinforcement bracket since it was in the way of my valence. While the area is definetly more flexy, it does not rattle, even at 100mph speeds.

My exhaust presses against the valence once it expands from heat, but so far nothing has melted, if it does, just gives me an excuse to use the Dremel again and widen the hole.

Otherwise, your information is right on and will make an excellent addition to the Archives.

Again, great work and write up.

<b>Enjoy!</b>
Old 08-05-2004, 12:12 PM
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Lookin good and nice write up!


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