fullymatted.
Back to search
Rennlist

997 mufflers, exhaust, cans: on a 996

Add to repair workspace
Open repair workspace
Original source
9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH997 mufflers, exhaust, cans: on a 996

Leading reported evidence

Use dual glas-pak style exhaust

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

They use a dual glas-pak style exhaust but I've heard it's really loud???

997 mufflers, exhaust, cans: on a 996
Read full discussion summary

Leading evidence: 'Use dual glas-pak style exhaust' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Use dual glas-pak style exhaust' (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.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 9 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

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

Use dual glas-pak style exhaust

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

They use a dual glas-pak style exhaust but I've heard it's really loud???

997 mufflers, exhaust, cans: on a 996
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.

9 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: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Rennlisters: After searching and searching the forums, and even calling an exhaust manufacturer - no one was able to tell me the EXACT difference between a 997 and 996 exhaust, and whether or not a 997 would fit on a 996. Well after getting a 997 Tubi to fit to my C4S, I figured I'd post what I learned so that someone searching for this question would at least have more information... Mounting bracket: the same Tube from cat to muffler: about 2.25 inches too long. (see pic, sample exhaust from Vivid's website). Also note that this tube is NOT flared or tapered. Meaning: you can just cut end and you're good to go. Tube from muffler to tips: If you have a C4S, the 997 exhaust tubing will be perfect (no mod needed, see pic) - leaving you a 2-2.25 tube in the center of your exhaust cutout. If you have a 997 exhaust that looks like the picture I attached above, the tips will probably swap from a C2 996. I'd like to thank member Juankimalo for giving me the hope that this mod was possible after he mounted a 997 PSE to his 996. Well, I hope this helps anyone contemplating this mod... cheers. B)

POST 2Original post

Good post! I knew (had heard) that some modifications needed to be made to 997.1 ** mufflers to get them to work on a 996, but I wasn't sure exactly what needed to be changed. ** the 997.2 exhaust system in TOTALLY different from the 997.1 system, but the side mufflers themselves "may" be the same or very similar to the 997.1 mufflers.

POST 3Original post

The best thing about putting on 997 PSE vs 996 PSE is the price.... but the 996 PSE electronics is better than the 997... better control for on/off sport function.

POST 4 / ORIGINAL POSTEROriginal post

Quotes source post: 6392606

Good point -- my post really relates to 997.1 spec mufflers... have no idea about the newer ones...

POST 5Original post

Could I steal your post for a second? I pulled my mufflers off my '03 C4S yesterday to do the Fister mod MKII--(Has anyone done BOTH the MkI & MkII on the same muffler? I know about the back pressure stuff and all...but has anyone actually done it?) I couldn't believe how heavy the mufflers are...it's like a bag of cement!! Times 2. So, anyone figure out how to fabricate some, say, Glasspaks (do they still make those) to bolt on? Just askin"

POST 6Original post

I am not aware of anyone that did the MK I and MK II PSE mod to the same set of mufflers. You could be the first guy to do it!

POST 7Original post

Check out "Afterhours" exhaust in (I believe) SoCa. They use a dual glas-pak style exhaust but I've heard it's really loud???

POST 8Original post

Quotes source post: 6393250

To me, that's at least half the benefit of an exhaust upgrade -- the weight savings! Plus what's the going price for 997 cans? I weighed one of my stock cans...20 lbs each. The Fabspeed was somewhere around 7-8lbs each (just a bathroom scale, but you get the idea). Total weight savings, about 24lbs off the rear. I've also heard about the "Afterhours" exhaust which would also provide the weight savings, but I think they're only slightly quieter than bypass pipes.... http://www.afterhoursautomotive.com/...emufflers.html

POST 9Original post

From what I've seen they're wicked loud under full throttle but have a much more sedate tone than the bypass at idle or when cruising.

This is a source reference. Confirm exact model applicability in the original material.