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Fabspeed muffler bypass

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

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YOUR RESEARCHFabspeed muffler bypass

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best mod i have done

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Suspected cause

It is probably the best mod I have done.

Fabspeed muffler bypass
Frequently discussed work

Replace components

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Suggestion

There are a bunch of options if you want to replace the components, but from what I have heard and read, the Fister-D mod has the most bang-for-buck!

Fabspeed muffler bypass
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Leading evidence: 'best mod i have done' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'best mod i have done' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace components' (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 components

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
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Discussions
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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
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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

There are a bunch of options if you want to replace the components, but from what I have heard and read, the Fister-D mod has the most bang-for-buck!

Fabspeed muffler bypass

Replace stock exhaust and i saw

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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.

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

Suggestion · Original poster

Hi, I would like to replace my stock exhaust and I saw that Fabspeed are selling a muffler bypass kit.

Fabspeed muffler bypass

Use ) last summer

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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.

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

Suggestion

I ran them for (road use) last summer but living downtown it's just to damn loud, they don't sound that good at low rpm's but anything over 2500 it's the bomb!

Fabspeed muffler bypass

Use car more i would only

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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.

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

Suggestion

If I used my car more I would only use them for the track.

Fabspeed muffler bypass
Frequently discussed actions (5)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace components

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

There are a bunch of options if you want to replace the components, but from what I have heard and read, the Fister-D mod has the most bang-for-buck!

Fabspeed muffler bypass

Replace stock exhaust and i saw

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 · Original poster

Hi, I would like to replace my stock exhaust and I saw that Fabspeed are selling a muffler bypass kit.

Fabspeed muffler bypass

Use ) last summer

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 ran them for (road use) last summer but living downtown it's just to damn loud, they don't sound that good at low rpm's but anything over 2500 it's the bomb!

Fabspeed muffler bypass

Use car more i would only

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

If I used my car more I would only use them for the track.

Fabspeed muffler bypass

Use reverse taper of going small at the head

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'm not sure who's headers I saw but one manuafcturer is using a reverse taper of going small at the head to wider at the cat connection.

Fabspeed muffler bypass
Reported and suspected causes (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

best mod i have done

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
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.

Suspected cause

It is probably the best mod I have done.

Fabspeed muffler bypass
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.

20 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: 20261026T061123Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi, I would like to replace my stock exhaust and I saw that Fabspeed are selling a muffler bypass kit. Can you tell me more about bypassing the mufflers, what the sound look like and does light up the engine light. Any feedback will be helpfull. Thanks Sylvain

POST 2Original post

by-pass = very loud Major drone inside car, you will get a headache and IMO hearing loss sounds like a tractor outside no engine light issues..... did you get the feeling I didnt like them? whats the car used for, what are you trying to get out of it.... we will suggest something.....

POST 3Original post

Quotes source post: 7288059

Hey Sylvain, The muffler bypass pipes are very loud, aggressive and definitely make a statement! I ran them for (road use) last summer but living downtown it's just to damn loud, they don't sound that good at low rpm's but anything over 2500 it's the bomb! I ended up putting a 200 cell cat, header and sports exhaust package on mine. I was going to use mine for track days but it doesn't look like I'll have much time for that this summer, if you're interested I'll sell you mine for a 150,- bucks but I don't know if the C4S bypass pipes fit on your's. Cheers, Sid. Ps. there is no check engine light since your C02 censors are located before the muffler.

POST 4Original post

I run them on my race car and they sound great, but I wouldn't consider them for a street car. Way too loud.

POST 5Original post

If anyone has a set of Fabspeed's X pipes (cat bi-pass) they want to sell please PM me....

POST 6Original post

Was thinking of getting them but fabspeeds exhuast/headers/hiflow cats are loud enough.

POST 7Original post

Hey Sylvain, I have a 2003 C4S and I have the muffler By-Pass on my car. I dirve it on the street and do DE events. That was the main reason I got them. They are very loud especially on the street. They really make a statement and you will not be sneaking in or out. If I used my car more I would only use them for the track.

POST 8Original post

Sylvain, Another Fabspeed muffler by-pass user. I actually enjoy the noise they make and prefer the sound but then again..thats my taste. One thing I have noticed is that you loose the torque in the low gears.

POST 9Original post

Speaking of loosing torque. I'm not sure who's headers I saw but one manuafcturer is using a reverse taper of going small at the head to wider at the cat connection. For a mix of low and high end its best to go from wider to smaller taper. I'm hoping these guys manufacturing headers have put some good research into what they are producing keeping exit temps near factory so it wont be warping or burning vavles.

POST 10Original post

Sylvain, I have the Fabspeed muffler bypass and I love the sound! It is probably the best mod I have done. I have driven only on the street and I get a lot of compliments. With an engine that sounds this good, why put earmuffs on it.

POST 11Original post

Quotes source post: 7291449

There's a big difference in price though! $4000,- + for cats/mufflers/headers whereas the bypass pipes are only $300,- . But in the end you get what you pay for...

POST 12Original post

sorry to dredge up an old thread. I just got a set of fabspeed muffler bypass pipes and i was really expecting something exceptional for $300. I could go to any mom and pop muffler shop and get the exact thing bent for $30. I feel liked i was tricked.

POST 13Original post

Quotes source post: 9926734

If you purchased these for $300 then you bought them used as new Fabspeed bypass pipes are about $550 IIRC. Why not resell them and then go to your mom and pop muffler shop to buy replacements? Fabspeed makes great pruducts but in the end these are simply exhaust pipes not mufflers, etc. I'm not quite sure what you were expecting.

POST 14Original post

I had the bypass pipes on my car for a few weeks. They sound awesome, but they are obnoxious when in the car, way too much drone.

POST 15Original post

So for those in the know, what are some exhaust options and pros/cons of each? I'm looking to make my car sound less like a vacuum cleaner as well, but am not looking for a huge performance boost, nor do I want something so loud that the neighbors are annoyed.

POST 16Original post

The Fister-D mod is a very popular one, and cheap too. You end up getting a pair of modified mufflers that somehow sound a million times better than the stock ones! I am sure there is noone who has had one fit to their car and regretted it. (They cost $250 with exchange + shipping) A slightly more expensive option is to fit sport mufflers from Fabspeed. I have the MAXFLO muffler system on my car and its sounds brilliant. I am frequent visitor to the 6000revs range now. But these are a bit pricey. There are a bunch of options if you want to replace the components, but from what I have heard and read, the Fister-D mod has the most bang-for-buck!

POST 17Original post

+1 for the Fabspeed Maxflos. I went to those after the bypass pipes and I love them.

POST 18Original post

Had my bypass pipes on for over a year and a half. I love them. Have no issues with cops or the neighbors since I can control my foot in those areas. Also, mine were not Fabspeed, I think I paid $75 for them used. I noticed zero increase or decrease in performance with them. Personally, I love the sound. They are not for everyone though. I do still have my stock exhaust in the garage though.

POST 20Original post

Pleeeeease if somebody plan to sell any cat bypass for my 06 Cayenne S, please dpnt hesitate to PM me RUUSHH !!

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