Most aggressive sounding exhaust for B5 Audi S4???

**MattaudiS4** · 03-01-2015 12:27 AM

Hello, I am currently looking for what would potentially be a very aggressive sounding exhaust. I am lost for what would be the best sounding and best performing exhaust. Please post clips or names of exhausts and your opinion.
2001 Audi B5 S4

Another question what would be the best Chip for Stage 2 set up. I currently have GIAC stage 1 ECU.

Thanks,
Matt

**s4chiro** · 03-01-2015 05:05 AM

Asp 89 true dual exhaust
tune: Daz dillenger or giac x stage 2 tune

**tico** · 03-01-2015 06:10 AM

http://www.audizine.com/forum/showth...ust-sound-like

**sj6spd** · 03-01-2015 06:29 AM

Best Sounding is subjective
Loud and aggressive? ASP dual, AWE Twin 1, 034 3.5 single, UUC VM1/2/3.

Best performing? For K03 based setups, any decent dual 2.25 or single 3" system with non-restricting "straight through" mufflers should result in negligible loss of HP from backpressure and perform equally.
I say this because I was at an AWE dyno day years ago where a GIAC X equipped S4 w/K03s running Race file, 100 Oct, milltek 3" single exhaust, and dumps ran ~315 whp with the dumps open and closed.

GIAC X is the same for stage 1 and 2 last I knew....and was one of the more aggressive K03 files back when I was stage II+ but this was back almost 10 yrs ago. After upgrading to stage 3, I lost track of K03 tuning.

**JKnight41** · 03-01-2015 07:21 AM

I have a GIAC X tune running 19psi. Then I have ssac 2.5 dp's catless and non res into UUC VM3. My car hauls a lot of ass for a stage 2 in my opinion. Wayyyy faster than my old stage 2 sedan, and it sounds very good as well.

**str8blst** · 03-01-2015 08:14 AM

I've had supersprint, asp, awe and now 034 3.5... The 034 is definitely the most aggressive sounding.

**f4m0u5** · 03-01-2015 10:43 AM

I love the sound of my milltek catted downpipes and single 3" cat back!

It was quiet at first so deleted the mid muffler /resonator. Much better!

**Quattro_2.7tt** · 03-01-2015 10:48 AM

I always liked the sound of the UUC exhaust but they are impossible to find.

https://www.youtube.com/watch?v=KwblxWsZtw4

**AudiTechS4** · 03-01-2015 11:17 AM

uuc vm3 ftw!!!

**f4m0u5** · 03-01-2015 11:18 AM

Http://youtu.be/6Cj34ywh_Ug

Couple short videos. And i have a few on my youtube of driving around with same exhaust.

**MattaudiS4** · 03-01-2015 11:41 AM

Thank you guys very much, its really helpful!:)

**MattaudiS4** · 03-01-2015 11:43 AM

Good god that sounds amazing.....

Originally Posted by Quattro_2.7tt

I always liked the sound of the UUC exhaust but they are impossible to find.

https://www.youtube.com/watch?v=KwblxWsZtw4

**MattaudiS4** · 03-01-2015 11:44 AM

Originally Posted by JKnight41

I have a GIAC X tune running 19psi. Then I have ssac 2.5 dp's catless and non res into UUC VM3. My car hauls a lot of ass for a stage 2 in my opinion. Wayyyy faster than my old stage 2 sedan, and it sounds very good as well.

Do you have any videos of it sir?

**MattaudiS4** · 03-01-2015 11:45 AM

Originally Posted by sj6spd

Best Sounding is subjective
Loud and aggressive? ASP dual, AWE Twin 1, 034 3.5 single, UUC VM1/2/3.

Best performing? For K03 based setups, any decent dual 2.25 or single 3" system with non-restricting "straight through" mufflers should result in negligible loss of HP from backpressure and perform equally.
I say this because I was at an AWE dyno day years ago where a GIAC X equipped S4 w/K03s running Race file, 100 Oct, milltek 3" single exhaust, and dumps ran ~315 whp with the dumps open and closed.

GIAC X is the same for stage 1 and 2 last I knew....and was one of the more aggressive K03 files back when I was stage II+ but this was back almost 10 yrs ago. After upgrading to stage 3, I lost track of K03 tuning.

Awesome thank you very much man!

**CELison** · 03-01-2015 11:49 AM

SSAC dps, test pipes, borla cat back w/ res removed. Sounds pretty nasty at full tilt and different from a lot of set ups.

**Philip J. Fry** · 03-01-2015 12:15 PM

I'm very happy with my AWE 2.5" downpipes connected to a UUC VM3. The trick is finding someone selling a UUC if you like it.

**AudiTechS4** · 03-01-2015 12:25 PM

^ i have the exact same setup on my ko4 car

**MattaudiS4** · 03-01-2015 12:35 PM

Originally Posted by CELison

SSAC dps, test pipes, borla cat back w/ res removed. Sounds pretty nasty at full tilt and different from a lot of set ups.

That fly by was freaking bad ass...

**MattaudiS4** · 03-01-2015 12:36 PM

Originally Posted by Philip J. Fry

I'm very happy with my AWE 2.5" downpipes connected to a UUC VM3. The trick is finding someone selling a UUC if you like it.

As of right now the UUC seems to be a favorite and very hard to find. What do they usually run for?
thanks

**Meow** · 03-01-2015 12:37 PM

Two of the most aggressive sounding s4s are johns gt turbo car with crazy manifolds and the Canadian single turbo car that went 10s with custom manifolds too.

**Bimmerchop** · 03-01-2015 01:13 PM

Custom 3.5-4" single or go home.

**JKnight41** · 03-01-2015 01:25 PM

Originally Posted by MattaudiS4

Do you have any videos of it sir?

That can be arranged

**MattaudiS4** · 03-01-2015 01:59 PM

Originally Posted by JKnight41

That can be arranged

Please I would love to hear your set up man!

**zillarob** · 03-01-2015 02:06 PM

Gnarliest Ive heard on an s4 is a buddies tial track car with dual 3" straight pipes.
Im pretty sure it goes right past aggressive and straight to hearing impairment though

**DarthWinja** · 03-01-2015 02:08 PM

Fast Intentions imo

Rose: 00 S4 6MT. 034 MS diverters, piggies, stage 1 ecu, Apikol diff brace, Apikol diff bushings, E-codes, AWE vent mount boost guage, H&R premium street coilovers, Fast Intentions stage II cat back exhaust, short shifter, drive train stabilizer, Doge sticker.

**f4m0u5** · 03-01-2015 05:14 PM

Originally Posted by MattaudiS4

Another question what would be the best Chip for Stage 2 set up. I currently have GIAC stage 1 ECU.

Thanks,
Matt

Also just got a solo motorsports (j fonz) stage 2 tune and love it! Holds boost better then my auto speed performance stage 1.

Cant wait for dragway to open and try out my 100 octane file

**S4 00 2.7** · 03-01-2015 05:30 PM

Check out the Challenge Motorweks alpha catback.

**jballou** · 03-01-2015 06:02 PM

Fast intensions race exhaust.

**bobkatkat** · 03-01-2015 09:24 PM

Cobbled Exhaust, bailing twine and soup cans.

**MattaudiS4** · 03-01-2015 09:41 PM

Originally Posted by bobkatkat

Cobbled Exhaust, bailing twine and soup cans.

Holy lord man that sounds amazing.....

**JKnight41** · 03-01-2015 11:29 PM

Originally Posted by bobkatkat

Cobbled Exhaust, bailing twine and soup cans.

I want your bumper..

**MattaudiS4** · 03-02-2015 12:23 AM

Originally Posted by JKnight41

I want your bumper..

Its beautiful huh?

**Shhmaudi** · 03-02-2015 12:40 AM

Originally Posted by jballou

Fast intensions race exhaust.

x2

shameless plug of my exhaust(s) I am trying to sell
custom 3.5"

AWE twin 2

**zdriver** · 03-02-2015 10:18 AM

I really enjoyed my UUC vm3, my single 4" was a bit louder if that's what you're looking for.

**Monty23** · 03-02-2015 10:40 AM

Originally Posted by S4 00 2.7

Check out the Challenge Motorweks alpha catback.

This is a UUC VM3 clone and this is the exhaust I would buy if I were in the market since UUC stopped producing exhausts for our car. I loved my old UUC VM3. It sounded perfect!