B6/B7-S4/RS4 Exhaust Thread

[Joey]

I decided to start this thread for new comers with questions on which exhaust (cat-back) setup to purchase. This will hopefully prevent numerous threads on the same topic. When you reply please use the following format for easy information gathering. Feel free to post your reviews on the exhaust and reasoning why you purchased said exhaust.

Brand Make: Fast Intentions
Resonatation: Non-Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-Pipe
Transmission Type: 6-Speed



Should be getting my setup within a few weeks. I will write a short review of it once it is on the car.

If your exhaust is not listed above please let me know and i will add a category for it.

[Sandeman]

You could also stickie this...

but im all for the custom setup, make it the way you want it....

[beemercer]

Here is my current setup

Catback:
Brand Make: Milltek
Resonatation: Non-Resonated
Exhaust Diameter: 2.25"
Mid-Section Type: H-Pipe

Downpipes:
Brand Make: Milltek
Pre Cats: Gutted
Main Cats: N/A
Exhaust Diameter: 2.5"


Once I get some parts in I'll be transitioning to this setup:

Catback:
Brand Make: Custom Piping - Milltek Mufflers
Resonatation: Non-Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: VAST designed X-Pipe

Downpipes:
Brand Make: Milltek
Pre Cats: Gutted
Main Cats: N/A
Exhaust Diameter: 2.5"
Other: Electronic Cutouts

Once my exhaust is all setup I'll post a full review on the sound and performance gain (2.5" vs. 2.25").

And great thread Joey, I can't remember how many times I have said "get a 2.5" x-pipe catback..." on AZ.

[Joey]

And great thread Joey, I can't remember how many times I have said "get a 2.5" x-pipe catback..." on AZ.

Exactly why i made the thread

[Boosteda4tq]

Here is my Current Setup:

Catback:
Brand Make: Milltek
Resonatation: Non-Resonated
Exhaust Diameter: 2.25"
Mid-Section Type: H-Pipe

Downpipes:
Brand Make: OEM
Pre Cats: Gutted
Main Cats: Gutted
Exhaust Diameter: 2.175"

The Milltek was on the S4 when I purchased it and the Gutted Dp's Where purchased from Joey.
It sounds good, its a conservative sound in my opinion and you dont get to much drone in the interior only on RPMs below 2500 anything after that the noise in the cabin gets less and less.

[Joey]

Here is my Current Setup:

Catback:
Brand Make: Milltek
Resonatation: Non-Resonated
Exhaust Diameter: 2.25"
Mid-Section Type: H-Pipe

Downpipes:
Brand Make: OEM
Pre Cats: Gutted
Main Cats: Gutted
Exhaust Diameter: 2.175"

The Milltek was on the S4 when I purchased it and the Gutted Dp's Where purchased from Joey.
It sounds good, its a conservative sound in my opinion and you dont get to much drone in the interior only on RPMs below 2500 anything after that the noise in the cabin gets less and less.

How do you like those piggie pipes? Do you feel the faster acceleration without the cats?

[Boosteda4tq]

It does wake it up a bit..very impressed and I think its a must do mod.
Tomorrow i am going to the Track if the weather is good to do some passes i will keep you guys posted.

Next on the List JHM Tune!

[Joey]

It does wake it up a bit..very impressed and I think its a must do mod.
Tomorrow i am going to the Track if the weather is good to do some passes i will keep you guys posted.

Next on the List JHM Tune!

The tune will really go nice with the exhaust combo you are running. Keep us posted on the track times.

[Boosteda4tq]

Here is a sound Clip of Just the Milltek Cat Back Installed....I tried adding to my previous post for refrence but I couldnt edit it.

[Joey]

Thanks for adding the clip! The non-res sounds so much better than the resonated version. I test-drove on with resonators and couldn't tell it had an aftermarket exhaust. Curious to hear it with piggies.

[Boosteda4tq]

Thanks for adding the clip! The non-res sounds so much better than the resonated version. I test-drove on with resonators and couldn't tell it had an aftermarket exhaust. Curious to hear it with piggies.

I am working on it....should have it up Sometime this weekend.

Now I need to get to sleep as tomorrow is Tune up day on the S.

[mad70sx]

Here's my exhaust

Brand Make: Fast Intentions catback and downpipes
Resonatation: 14" Resonator with cats
Exhaust Diameter: 2.5"
Mid-Section Type: X-Pipe

[sakimano]

great idea

http://www.audizine.com/forum/showpo...20&postcount=9

need a tune one now

[sakimano]

I am working on it....should have it up Sometime this weekend.

Now I need to get to sleep as tomorrow is Tune up day on the S.

I really wish the Milltek was 2.5". and X-piped.

Of course, then it would basically be FI.

[sakimano]

Thanks for adding the clip! The non-res sounds so much better than the resonated version. I test-drove on with resonators and couldn't tell it had an aftermarket exhaust. Curious to hear it with piggies.

you can sure tell on this...wonder if the downpipes are the difference maker?

[Silver B6 S4]

you can sure tell on this...wonder if the downpipes are the difference maker?

They have to be, my Milltek non-res sounds nothing like that...

[sakimano]

p.s. this oughtta be stickied

[GameBreaker]

Brand Make: Fast Intentions
Resonatation: 8" Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-Pipe

I love the exhaust, but to me it's still a little quiet. I have a tip, and do mostly city driving, but don't mind the drone at all.

I went resonated because I'm not a huge fan of raspy exhausts.. maybe a bad experience with the angry bees of an old M3. I'm still debating whether to go for headers or downpipes, but if I do go headers I will probably remove the resonators.

[DucatiR930]

Catback:
Brand Make: Milltek
Resonatation: Non-Resonated
Exhaust Diameter: 2.25"
Mid-Section Type: H-Pipe


Bought the car with the Milltek Non-Res and I don't really have any complaints. It does drone a little bit just under 2K but I started to like the drone after a week or two. Piggie pipes are soon to come. I'm going to wait a few more weeks until it warms up a little bit around here.

[ngng]

Joey- we should add photos of the rear end AND the type of transmission you have; 6spd vs auto will make a different where the RPMs sit

[Joey]

Joey- we should add photos of the rear end AND the type of transmission you have; 6spd vs auto will make a different where the RPMs sit

Good idea!

[ngng]

2004 S6 6spd manual

___ with my B6 body ___
APR cat-back
Brand Make: APR
Resonatation: Resonated
Exhaust Diameter: 2.25"
Mid-Section Type: X-pipe

This was my first exhaust on the car, the APR really changed the tune of the car; it made it sound more "euro" than "v8". Louder, but still quiet. No drone.


APR downpipes + APR catback
Brand Make: APR
Resonatation: Resonated
Exhaust Diameter: 2.25"
Mid-Section Type: X-pipe

Wanting to make the APR cat-back a little louder I added 2.25" downpipes. I noticed an increase of sound; still not obnoxious, but not quiet either. There was a noticeable increase through the powerband.


APR downpipes + Milltek resonated exhaust
Brand Make: APR, Milltek
Resonatation: Resonated
Exhaust Diameter: 2.25"
Mid-Section Type: H-pipe

Wanting larger tips, I added a Milltek resonated exhaust. Milltek construction is a piece of shit. The welds are meh, and the hardware they supply is garbage. They actually include a tube of exhaust paste. FAIL. That being said, the resonated exhaust + APR DPs sounded sounded nice, but was actually quieter than the full APR setup.


APR downpipes + Milltek non-resonated exhaust
Brand Make: APR, Milltek
Resonatation: non resonated
Exhaust Diameter: 2.25"
Mid-Section Type: X-pipe

Removing the resonators really woke the car up; hands down, one of the best sounding exhausts EVER.


___ with my B7 body ___
JHM longtube headers + GMG midsection + Labree mufflers
Brand Make: JHM, GMG, LAbree
Resonatation: Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-pipe

OMG WTF.



JHM longtube headers + STaSIS cat-back
Brand Make: JHM, STaSIS
Resonatation: non-resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-pipe

OMG WTF^2

[JohnnyAlQaeda]

Catback:
Brand Make: Labree
Resonatation:14" Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-Pipe

Downpipes:
Brand Make:Labree
Pre Cats: Catless
Main Cats: Catless
Exhaust Diameter: 2.5"

sounds like crazy angry lion sex from 3K on up. Absolutely love it, little drone no rasp and no popping or crackling. just perfect.

[tyler]

Catback:
Brand Make: fi
Resonatation: none
Exhaust Diameter: 2.5"
Mid-Section Type: x

Downpipes:
Brand Make: fi
Pre Cats: no
Main Cats: no
Exhaust Diameter: 2.5"
Loud: very

[BUD]

Current catback:

Brand Make: Milltek
Resonatation: Non-Resonated
Exhaust Diameter: 2.25"
Mid-Section Type: H-Pipe
Transmission Type: 6-Speed

Love the sound but a little quiet IMO. For Sale at the moment (pm me if interested).

I just received in the mail, DP's:

Brand Make: Milltek
Pre-cats: non
Main-Cats: non
Diameter: 2.5"

Future catback (going on in 2 weeks):

Brand Make: Custom (Kade Gates Fabrication)
Resonatation: Non-Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-Pipe
Transmission Type: 6-Speed

[Joey]

Mark i assume you got the DP's all right and are satisfied? Glad they went to another EA member!

[SkiWalk3r]

B7 S4 Tiptronic

Milltek Downpipes (not installed yet) + STaSIS cat-back
Brand Make: Milltek, STaSIS
Resonatation: Resonated
Exhaust Diameter: 2.5" once the Milltek is installed
Mid-Section Type: X-pipe, I guess, not really sure

[DuncanC]

B7 S4 6MT

Brand Make: FI
Resonatation: Non-Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-Pipe

As well as downpipes:

Brand Make: Milltek
Pre-cats: none
Main-Cats: none
Diameter: 2.5"

Sounds absolutely amazing. Every car guy that hears it compliments me on it. But yea, its pretty loud when your pushing it. Not bad at idle, but under any load you hear it. It is loud in the cabin under load from 1500rpm to 2500rpm.

Videos:

[JohnnyAlQaeda]

its not that loud relatively speaking. as long as you dont rev the hell out of it in the neighborhood you shouldnt have any issues. mine doesnt start coming to life until about 3200 and really starts to scream at 4500.

edit: just now saw that you got an un res. now im anxious to hear what you think as well lol

[tatarin]

Catback:
Brand Make: Milltek
Resonatation: Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: H-Pipe

Downpipes:
Brand Make:APR
Pre Cats: Catless
Main Cats: Catless
Exhaust Diameter: 2.5"

I had my connection points redone with flanges instead of slip-in style. As for sound i love it not too quite not too loud, no drone on highway.

[BUD]

Mark i assume you got the DP's all right and are satisfied? Glad they went to another EA member!

Ha yeah man i was going to email you and thank you! I had you ship them to my parents house so i wont see them until i get a chance to get over there this weekend! And thanks to your DP removal DIY I'll be installing them this weekend as well!

Edit: My dad called me and was like, "another f**king part for your car showed up at the house!" ha ha ha i love it.

[PNWCougarS4]

It seems like the Corsa system isn't very popular. Are there any known issues or are the other systems just superior?

[i.am.will]

Catback:
Brand Make: Corsa
Resonatation: Non-resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-Pipe

Downpipes:
Piggy Pipes: Gutted pre-cat

I'm very satisfied with the Corsa. Great sound, great quality. The exhaust tips could look a bit better, but I'm just being picky.

[BWT]

05.5 B7 S4 6MT
Catback:
Brand Make: Fast Intentions
Resonatation:8" Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-Pipe

Downpipes:
Brand Make:Fast Intentions
Pre Cats: none
Main Cats: yes
Exhaust Diameter: 2.5"

I bought the system used for $1200 and couldn't be happier. I needed something that wasn't too loud because of the area I live in and where I work. Most people don't even notice it unless I wind it up past 3k and then it definitely draws attention. The sound is deep and even a slight throttle blip sets off car alarms in parking garages. Under normal driving conditions, 25% throttle or less and it's very quiet. WOT its loud as hell! The perfect setup for my daily driver.

My only complaint would be how far the tips stick out past the bumper. Part of that is probably how it was installed though. I'm going to have them changed out to something a little shorter.

[BWT]

B7 S4 6MT - Currently stock.

Ordered today:

Brand Make: FI
Resonatation: Non-Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-Pipe

As well as downpipes:

Brand Make: Milltek
Pre-cats: none
Main-Cats: none
Diameter: 2.5"

Can't wait! I'll update this with feedback once its all installed. I'm a little bit scared about how loud it will be, but I wanted to try the fastest setup and then add restrictions if I have to until its a level the neighbors won't hate me for.

You're going to get great performance from that setup but it will be loud as hell!

[enigma1406]

Catback:
Brand Make: Fast Intentions
Resonation: Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-Pipe

Downpipes:
Brand Make: Fast Intentions
Pre Cats: none
Main Cats: yes
Exhaust Diameter: 2.5"

Usually not too loud, but around 2100 RPMs it gets louder when I let off the gas. Also at low RPMs it's louder. At cruising speeds it's pretty quiet.

[trexturk]

Catback:
Brand Make: Custom Quad Tip
Resonation: Resonated
Exhaust Diameter: 2.25"
Mid-Section Type: H-Pipe

Downpipes:
Brand Make: Custom
Pre Cats: None
Main Cats: None
Exhaust Diameter: 2.25"



I have messed with my exhaust set-up many many times and this is the best setup i have came up with. No drone and not very loud in cabin, but it screams when on it.
I will be switching to a b7 fast intentions b7 x pipe 8" res catback and 2.5 downpipes(custom)

[BWT]

Catback:
Brand Make: Custom Quad Tip
Resonation: Resonated
Exhaust Diameter: 2.25"
Mid-Section Type: H-Pipe

Downpipes:
Brand Make: Custom
Pre Cats: None
Main Cats: None
Exhaust Diameter: 2.25"



I have messed with my exhaust set-up many many times and this is the best setup i have came up with. No drone and not very loud in cabin, but it screams when on it.
I will be switching to a b7 fast intentions b7 x pipe 8" res catback and 2.5 downpipes(custom)

Trexturk - I love these tips. Were did you get them? BTW, nice work on the rear valence. It looks great.

[boravr6]

My new setup!

Brand Make: Fast Intentions
Resonatation: Non-Resonated
Exhaust Diameter: 2.5"
Mid-Section Type: X-Pipe
Transmission Type: 6-Speed



Brand Make: OEM
Pre-cats: none
Main-Cats: yes
Diameter: 2.25"


**edit **

added a vid

[V8S4Fun]

CATBACK
Brand Make: Milltek
Resonatation: Non-Resonated
Exhaust Diameter: 2.25"
Mid-Section Type: H-Pipe
Transmission Type: TIP

DOWNPIPES
Brand Make: Custom (RAI Motorsport)
Pre-cats: none
Main-Cats: none
Diameter: 2.5"