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Drill holes for louder exhaust note?

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

Discussion summary

YOUR RESEARCHDrill holes for louder exhaust note?

Leading reported evidence

Install muffler bypass pipes today and it's insanely loud

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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.

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Performed · outcome unconfirmed

Installed my muffler bypass pipes today and it's insanely loud...and I love it!

Drill holes for louder exhaust note?
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Leading evidence: 'Install muffler bypass pipes today and it's insanely loud' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install muffler bypass pipes today and it's insanely loud' (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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1 matching discussions · 12 captured posts examined · 0 partial discussions

Compare 3 other evidence results

Run supersprint system

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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
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

I am running the SuperSprint system with B&B Headers.

Drill holes for louder exhaust note?

Replace note

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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.

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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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Suggestion

The headers really dont change the note to much.

Drill holes for louder exhaust note?

Replace stock system

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
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

Just spend the extra buck and replace the stock system.

Drill holes for louder exhaust note?
Frequently discussed actions (4)

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

Install muffler bypass pipes today and it's insanely loud

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

Installed my muffler bypass pipes today and it's insanely loud...and I love it!

Drill holes for louder exhaust note?

Replace note

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

The headers really dont change the note to much.

Drill holes for louder exhaust note?

Replace stock system

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

Just spend the extra buck and replace the stock system.

Drill holes for louder exhaust note?

Run supersprint system

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

I am running the SuperSprint system with B&B Headers.

Drill holes for louder exhaust note?
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.

12 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: 20261027T070717Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Can I strategically drill holes in my 996 exhaust to increase engine noise? If so, anyone done this and can tell me exactly where? If not, which quality aftermarket exhaust system is the loudest? Thanks.

POST 2Original post

I dont know about drilling holes in your exhaust, I can't imagine that to be good.... Just spend the extra buck and replace the stock system. I have the Fabspeed maxflo exhaust system. I think it is definitely one of the loudest exhausts for 996s. Most people on the board have gone with Fabspeed, PSE, or GHL. Do a search, there has been tons of threads on this before.

POST 3Original post

The ONLY place you want exhaust gases escaping is out the back pipes.

POST 4 / ORIGINAL POSTEROriginal post

Thanks. Had a fabspeed on my 993 when I bought it and I enjoyed the sound. Thought I might get away with a homemade solution; guess not. I'll look into it.

POST 5Original post

Dude, get the fabspeed bypass pipes - It does not get any louder than that. Standing at a light and reving it up to only 4k rpm will have everybody looking at you, and all rice burners want to race you.

POST 6Original post

I am running the SuperSprint system with B&B Headers. We have the catpipes too for the REALLY loud noise. Want more info on the different ones and sounds PM me.

POST 7Original post

vividracing: How do you think the supersprints would sound without the headers? I'm thinking of upgrading from stock but, I don't like resonance or loud mufflers. Thanks Mark

POST 8Original post

I have a B&B sport muffler on stock exhaust headers on my '99 996. Mine is a daily driver and occassionally duty calls and the cell phone rings. At freeway speeds, the exhaust note intrudes a little on the cell conversation but not on conversation within the car and that's just fine. In SoCal stop-n-go, the note is just fine for all conversation.

POST 9Original post

The headers really dont change the note to much. The exhaust internals break down over time giving the car a better sound. The tone from when I first got it to now is MUCH improved. I had the B&B on for a day, it was ok. I like the look of the SuperSprint better. Neither one of these exhaust has resonation in the cabin. Depends on the person too. Let me know and I will hook you up!

POST 10Original post

its not the exhaust internals breaking, its the carbon buildup.

POST 11Original post

Drilling holes in the muffler is just a bad idea. I seen it done before to get some extra sound, but it will cause exhaust to be blown in the wrong places and may cause some cabin carbon monoxide or staining of your rear bumper. Also you can't predict how is it gonna sound. As far as the sound changing as an exhaust gets older is either two fold. If it gets louder its the internal packing breaking down and the exhaust is muffling less. If its getting quiter there is some cabon build up in the exhaust system and that is muffling it some more. I'm no expert, but it makes logical sense to me.

POST 12Original post

Installed my muffler bypass pipes today and it's insanely loud...and I love it! My '99 C2 had B&B headers & mufflers. The sound was good, but not loud enough. If I did it again, I'd skip the headers as they don't make any real difference sound or performance-wise as far as I could tell and I'd go with Fabspeeds.

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