fullymatted.
Back to search
Rennlist

3.4 mufflers on a 3.6?

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

Discussion summary

YOUR RESEARCH3.4 mufflers on a 3.6?

1 matching discussions were examined; no attributable action/outcome evidence was detected. No consensus or repair conclusion is claimed.

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

Read captured replies

Insufficient extracted evidence does not mean there is no answer in the original discussions.

1 matching discussions · 7 captured posts examined · 0 partial discussions

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.

7 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: 20261026T124918Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have a 2002 3.6 I know it may be a backward step -- but I have available for a minimal price near new 3.4 mufflers. If I do the "sports exhaust mod" by welding in the curved bypass pipe will they perform and sound ok? Thanks for the advice

POST 2Original post

The way some of the 3.4 are made (not all) there is a HUGE seam over the cap in the second chamber making the MK1 hack mod the only option. However I have seen some gen 2 3.4's w/o that seam and think if you can do the MKII hack they "should" sound very much the same. I believe if you have to do the MKI hack its not worth the effort

POST 3Original post

Michael. I have done the MK II mod to both 3.4L and 3.6L mufflers and installed them on my '04 996. I would strongly recommend that you NOT waste your time doing the mod to the 3.4L mufflers. While my 3.4L mod was better that stock, I was disappointed in the sound difference. However, the 3.6L mufflers with the same mod sounded awesome! Why not do the mod to your current mufflers? The only reason I did not do the mod to my stock 3.6L mufflers was because I was leasing the car at the time and wanted to be able to return the car to stock equipment at lease end. Just to make sure you understand the difference between the MK I mod and the MK II mod, I have a pic of each mod. the 1st pic shows the MK I mod, which is a smaller diameter 'J" pipe connecting the inlet pipe to the outlet pipe. The 2nd pic shows the MK II mod which connects a 2" to 2.5" diameter pipe from the caped end of the muffler to the outlet pipe. This mod mimics the design of the 3.6L "real" PSE mufflers, but obviously, does not include the vacuum controlled open/closed valve (shown in the 3rd pic). Hope this helps. Let me know if you have any additional questions.

POST 4Original post

Quotes source post: 6397516

Don't forget the MK I+II. [Wasn't me ] -td PSE double hack.jpg

POST 5Original post

Quotes source post: 6399858

OK I dont weld and that is a picture of why I dont !! OMG ! where is the throwing up smiley

POST 6Original post

Tim, in your pics the top is MKI on 3.4's the second is MKII on 3.6 and the bottom is just awesome (but not a hack, so throw those out.... to me!) but did you do the MKII hack to a set of 3.4's? and did they have that large seam where the two halves were put together?

POST 7Original post

Ed, In my second pic in post #3, the muffler on the left is one of the 3.4L cans with the MK II mod. The muffler on the right is my stock 3.6L from my '04 996. BTW, the mufflers in the first pic are, I believe, 3.6L mufflers with the MK I mod. THE 3.6L mufflers had the accordion inlet pipe on them.

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