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Agency mufflers

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17 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHAgency mufflers

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Install i'm 100% happy

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Performed · outcome unconfirmed

Fitment was a bit difficult, had to bend and cut a few things to get it to sit just right, but once installed I'm 100% happy with the sound.

Agency mufflers
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Leading evidence: 'Install i'm 100% happy' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install i'm 100% happy' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Replace exhaust systems

Performed · outcome unconfirmed

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Unsuccessful attempts
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Performed · outcome unconfirmed

we have swapped exhaust systems twice.

Agency mufflers

Test fit it

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion

I suspect they designed the kit "to fit both cars" but actually only test-fit it on a widebody, and it needs the extra little bit of width of the wider bumpers on the widebody cars.

Agency mufflers
Frequently discussed actions (3)

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Install i'm 100% happy

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

Fitment was a bit difficult, had to bend and cut a few things to get it to sit just right, but once installed I'm 100% happy with the sound.

Agency mufflers

Replace exhaust systems

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

we have swapped exhaust systems twice.

Agency mufflers

Test fit it

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

I suspect they designed the kit "to fit both cars" but actually only test-fit it on a widebody, and it needs the extra little bit of width of the wider bumpers on the widebody cars.

Agency mufflers
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

17 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T072535Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Looking to add some snort to my 03 C4S. Ive seen Agency mufflers and they look nice and would add some HP and added sound for around a grand. Anyone have experience with these. thanks

POST 2Original post

yes, they work great, maxspeed has about the same parts

POST 3Original post

I have a set of fabspeed mufflers I just took off my car. I'll let them go for a good price.

POST 4Original post

Quotes source post: 13986096

Which Fabspeed system is it?

POST 5Original post

Does your C4S have the Porsche Sport Exhaust option? If so, I'd stick with that. If not, having gone through multiple exhausts I'd look into the Gundo/Fister hack first. If you want to go all out, then order the full setup (Headers/X-Pipe/Exhaust) from TopGearUK. It'll run you about ~$1500 shipped from London - I can send you a video if you like.

POST 6Original post

Quotes source post: 13985133

FWIW I put the Milltek mufflers on my car. Fitment was a bit difficult, had to bend and cut a few things to get it to sit just right, but once installed I'm 100% happy with the sound. Off-throttle or part-throttle it's more or less identical to stock, but once you get above about 25% throttle it really growls and sounds perfect. At WOT it's probably 2-3x as loud as stock. You can still have a conversation over it, but it definitely sounds angry. Perfect for a street or occasional track car IMO. Anything louder would be obnoxious for daily use. Took advantage of Brexit and got it fairly cheap since it's made and distributed from UK, so when the pound dropped it was a great time to buy.

POST 7Original post

Hmm. Milltek install went fine on my C4S. No cuts or bends. https://www.youtube.com/watch?v=vrpfMP9wSBY

POST 8Original post

Quotes source post: 13987978

Yeah, mine is narrowbody. I suspect they designed the kit "to fit both cars" but actually only test-fit it on a widebody, and it needs the extra little bit of width of the wider bumpers on the widebody cars. I had to make some adjustments to move the mufflers toward the centerline of the car slightly to avoid rubbing the bumpers, but not so much that the exhaust tips don't line up with the bumper cutouts. Not a huge pain, but I was kind of annoyed that it didn't just bolt right on.

POST 9Original post

That makes sense, I think the connecting tubes to the cross pipes would have been far too long for a narrow body.

POST 10Original post

Quotes source post: 13986397

Do you have a link you can post to your topgearuk video? Been wondering what their setup sounds like. And any idea if their 200 cell sport cats are made by HJS? Website doesn't specify

POST 11Original post

I have both the FabSpeed Exhaust on my 03 Targa and The Power Agency Exhaust on my 04 C2 - I really like the Power Agency, sound great, build is good for the $, you can't go wrong

POST 12Original post

Looking for a quick and inexpensive tweak for more power and sound? Throw on a set of our Muffler Bypass Pipes and head for the nearest tunnel! https://www.youtube.com/watch?v=w1MN-b4FJPA https://www.youtube.com/watch?v=jCJnwSv3USg https://www.youtube.com/watch?v=TIbxFs-bhVM

POST 13Original post

Quotes source post: 13989069

can you PM me the website yiu ordered from? I have a cs4 and want to do the entire exhaust syste

POST 14Original post

Quotes source post: 14173104

I have a narrow body and my best friend has a C4s... we have swapped exhaust systems twice. somehow our systems are interchangable.

POST 15Original post

Quotes source post: 13985133

Mufflers, of any kind, will not add HP. You can get the sound you want, but don't believe the claims of more HP.

POST 16Original post

Quotes source post: 13986096

How much did you have in mind? You can message me if you like.

POST 17Original post

Quotes source post: 14173104

Jerybak--the C4S is a fantastic car, and I would love to work with you on our product line to see if we have a solution that will help you achieve the goals you are looking for. I'll shoot over a PM so that we can chat. Here's a video of our Performance Package at work: https://www.youtube.com/watch?v=jGaDXMXMlK8

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