fullymatted.
Back to search
986Forum

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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

Discussion summary

YOUR RESEARCHFabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Replace muffler and the bolts came off easily

Performed · outcome unconfirmed

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 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 replaced the muffler and the bolts came off easily.

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary

Leading evidence: 'Replace muffler and the bolts came off easily' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace muffler and the bolts came off easily' (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 · 18 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Use liquid wrench

Performed · outcome unconfirmed

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 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 used liquid wrench on them the day before.

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use ramps so i am bit ify

Performed · outcome unconfirmed

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 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 · Original poster

I intend on having the muffler in place first (putting in a new one) and then fitting the pipes.....I am using ramps so I am bit ify on being able to all the access I need.

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace muffler out

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

I am changing the muffler out for one I have modified along with the pipes......and was worried about the proper sequence for ensuring that every thing lines up.

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Tighten muffler mount bolts

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

Tighten the muffler mount bolts, then the bolts/nuts on the header flanges.

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (7)

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

Replace muffler and the bolts came off easily

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 replaced the muffler and the bolts came off easily.

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace muffler out

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

I am changing the muffler out for one I have modified along with the pipes......and was worried about the proper sequence for ensuring that every thing lines up.

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Tighten muffler mount bolts

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

Tighten the muffler mount bolts, then the bolts/nuts on the header flanges.

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Tighten two sets of clamps once you are happy

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

Finally tighten the two sets of clamps once you are happy with muffler tip alignment and clearance between the bypass pipes and the underbody tray.

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use flat 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 · Original poster

Mine wont budge without some major hammering (using a flat head on the sleeve it self)!

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use liquid wrench

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 used liquid wrench on them the day before.

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use ramps so i am bit ify

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 · Original poster

I intend on having the muffler in place first (putting in a new one) and then fitting the pipes.....I am using ramps so I am bit ify on being able to all the access I need.

Fabspeed 986 S by-pass install - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.

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

  • 986Forum: 1 discussions

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

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

Outcome without a verified action link

Yes I wished that worked...........I had a pry bar in there!

No unique explicit quoted action; no causal link assigned

Generation: 20261026T222516Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Does anyone have a good set of instructions for installing the fabspeeds as well as taking the muffler in and out (mods afoot!)? I am hoping I dont need a torch to heat up crusty bolts....and wondering if I need to leave the muffler in.. Thanks

POST 3Original post

check fabspeed.com as they usually have install directions posted right w/ the specific product. Otherwise, using the search function I'm sure you'll find some tips here as exhaust mods are covered fairly often. As for torching bolts... in order to hopefully avoid doing so, you'll want to hit them w/ PB Blaster, Liquid Wrench or WD40 (at the very least) for a number of consecutive days prior to your install attempt. Good luck

POST 4 / ORIGINAL POSTEROriginal post

....a great suggestion on the liquid wrench. the site has limited info. i was wondering all here found it necessary to go with the fabspeed copper gaskets or are the stock one fine

POST 5Original post

jaykay: If your Boxster has been exposed to a few winters with road salt, etc. (Toronto?), then there is a more than 50/50 chance that you will have some difficulty with at least a few of the twelve bolts that collectively hold the exhaust manifolds in place. PB Blaster, WD-40, etc. help, but are not a solution in some cases, even if you apply it religiously every couple of days for a few weeks (as I did). Applying heat with a torch, or, preferably an inductive heat electric tool gives you the best odds of not snapping off any of the bolts. Take a look at this thread for details on what it took on a '97 Boxster with 22K miles on it a few months ago, without the car having been driven in New York winters when there was snow on the ground: http://www.ppbb.com/phorum/read.php?19,1552140,1552140#msg-1552140 Good luck, and keep us posted with your results. Regards, Maurice.

POST 6 / ORIGINAL POSTEROriginal post

Thanks Maurice! No salt on this car so at least that will help. Hopefully no special tools are needed. I intend on having the muffler in place first (putting in a new one) and then fitting the pipes.....I am using ramps so I am bit ify on being able to all the access I need. Does one need to remove the rear bumper cover to get the muffler in and out?

POST 7Original post

why are you in need of taking the muffler out? this shouldn't be necesary for the bypass install.

POST 8Original post

If you are removing the muffler the rear bumper needs to come off. If you are just doing bypass pipes the muffler and rear bumper can stay. I replaced the muffler and the bolts came off easily. I used liquid wrench on them the day before. The pipes however were a little more difficult to get apart. Lots of twisting and pulling to get apart. Would have been easier with heat. If you need directions on removing the rear bumper ( easy ), just ask

POST 9Original post

one more thing buy new clamps, because you will probaly need them

POST 10Original post

New clamps definitely make the reassembly easier and helps insure easier disassembly next time. I used all stainless nuts,bolts and washers at the joints between the headers and cats and muffler. Marylandmetrics.com carries all metric hardware you could ever wish for. As long as your ramps are high enough to let you move your elbows freely across your chest and you can turn on your side, you should be able to do the job comfortably. Regards, Maurice.

POST 11 / ORIGINAL POSTEROriginal post

I am changing the muffler out for one I have modified along with the pipes......and was worried about the proper sequence for ensuring that every thing lines up. I will post a picture when I get it done. I hoping not to take the rear cover off.............is this a pain??

POST 12 / ORIGINAL POSTEROriginal post

Hey I am in the middle of this job and I have come across a welded nut on the header collector flange......How do you all handle it? Reuse the top nut and bolt and hope or somehow get a grinder in there???? What a pain! j

POST 13Original post

I put on the secondary bypass pipe last spring. Had the same issue with the welded on nuts on the header outlets. Do you have an air compressor and air tools? For me, an air powered cutoff wheel did quick work of the mild steel nut.

POST 14Original post

Forgot to answer your fitment question. You shouldn't have any issues. Just reassemble everything, but leave the fasteners loose. Tighten the muffler mount bolts, then the bolts/nuts on the header flanges. Finally tighten the two sets of clamps once you are happy with muffler tip alignment and clearance between the bypass pipes and the underbody tray.

POST 15 / ORIGINAL POSTEROriginal post

Thanks Lucky......no I dont have the cut off tool and air compressor! Looks like I need tools! Another hang up right now is the large clamp from the muffler to the secondary cat. I can only move it a few centimetres. Any good tricks to spreading it besides a torch? I suppose removing the bumper will allow me to swing at it but I am try to avoid that

POST 16Original post

Try wedging your largest flathead screwdriver into the clamp and then twist it if you need to spread it more. To ease reassembly, spread those clamps as much as you can once you have everything apart.

POST 17 / ORIGINAL POSTEROriginal post

Yes I wished that worked...........I had a pry bar in there!

POST 18 / ORIGINAL POSTEROriginal post

Anybody have to torch the big clamps at the end of secondary cats to get them to side??? Mine wont budge without some major hammering (using a flat head on the sleeve it self)!

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