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996 exhaust- stay with OEM or go aftermarket ??

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YOUR RESEARCH996 exhaust- stay with OEM or go aftermarket ??

Leading reported evidence

Use (cheap!) ss exhausts as well

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Performed · outcome unconfirmed · Original poster

I'll continue looking for good used (cheap!) ss exhausts as well.

996 exhaust- stay with OEM or go aftermarket ??
Frequently discussed work

Replace drivers's side exhaust

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Suggestion · Original poster

So, my options are to just replace the drivers's side exhaust with an OEM unit (around $450 and I plan to install it myself.

996 exhaust- stay with OEM or go aftermarket ??
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Leading evidence: 'Use (cheap!) ss exhausts as well' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace drivers's side 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.

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Use bypass pipe

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Unsuccessful attempts
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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
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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.

Performed · outcome unconfirmed

I'm sorry to steal the thread, but it kind of pertains.....has anybody just taken off the cat and used a bypass pipe.

996 exhaust- stay with OEM or go aftermarket ??

Use mobil 1

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

Someone asked which oil I use: Mobil 1 and changed it myself.

996 exhaust- stay with OEM or go aftermarket ??

Replace drivers's side 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 · Original poster

So, my options are to just replace the drivers's side exhaust with an OEM unit (around $450 and I plan to install it myself.

996 exhaust- stay with OEM or go aftermarket ??

Use only) how does it sound

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

(for off road use only) How does it sound?

996 exhaust- stay with OEM or go aftermarket ??
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 drivers's side 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 · Original poster

So, my options are to just replace the drivers's side exhaust with an OEM unit (around $450 and I plan to install it myself.

996 exhaust- stay with OEM or go aftermarket ??

Use (cheap!) ss exhausts as well

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'll continue looking for good used (cheap!) ss exhausts as well.

996 exhaust- stay with OEM or go aftermarket ??

Use bypass pipe

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'm sorry to steal the thread, but it kind of pertains.....has anybody just taken off the cat and used a bypass pipe.

996 exhaust- stay with OEM or go aftermarket ??

Use mobil 1

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

Someone asked which oil I use: Mobil 1 and changed it myself.

996 exhaust- stay with OEM or go aftermarket ??

Use only) how does it sound

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

(for off road use only) How does it sound?

996 exhaust- stay with OEM or go aftermarket ??
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.

41 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: 20261026T152433Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I recently developed a bad baffle in my '01 996- driver's side. So, my options are to just replace the drivers's side exhaust with an OEM unit (around $450 and I plan to install it myself. OR... upgrade to a SS aftermarket unit. I've read good things about Fabspeed's unit, but it's around $1,050 shipped. Agency Power has a unit for $900 shipped (thru Vivid Racing). I have a '91 NSX (which I track) with a loud aftermarket exhaust, so I don't want a loud one on my daily-driver 996 (has 49k miles, BTW). So, I'd like an exhaust that sounds a bit more aggressive while on the throttle, but is not much louder at cruise. Little or no DRONING is essential. Any thoughts? Thanks, I'm new to this forum.

POST 2Original post

PSE is the way to go. Costs a bit more, but gives you the best of both worlds, loud when you want it and quiet when you like it.

POST 3Original post

Quotes source post: 6803315

Then stay stock. The Agency Power ones have some drone at cruising. I have them and it is ok with me thought. I do not drive the car every day and it is not so bad. The mufflers are easy to install. Took me about an hour for both sides. Putting tips on straight took longer...lol

POST 4Original post

Quotes source post: 6803520

+1, only downfall is the price. $2800 or so.

POST 5Original post

happy with my ghl. i know there is a motor back there, but not intrusive at all.

POST 6Original post

Sparks259 said it well. I wanted just a little more sound for feedback while driving. Stock is SO quiet all the way to redline!

POST 7Original post

Is there a HP difference in aftermarket exhaust that will translate to real 0-60 ( or 0-100) or is it true that the engines are designed and tuned to be optimized with the back pressure of the OEM system?

POST 8Original post

I'm not sure there is really any "true power gain" with just a cat-back. I was going to just mod my cans (PSE hack), but thought any mod that increases the enjoyment (better sound) and drops some weight (lighter cans) would be better... so I went with Tubi. Keep your eye on the classified here and the 6... there are deals out there. I think there were a couple of TechArt exhausts for sale recently for about 1g. Good luck

POST 9Original post

Quotes source post: 6803315

You're describing a Fister Stage I perfectly. Barely louder than stock at highway cruise--I mean barely if at all. Not the least bit of droning. Slightly more grumble at idle and very low revs/low throttle opening. Then growls when at half throttle into a really nice (but still civilized) ripping scream at >3500 rpm/>half throttle to redline. It's the kind of sound and volume that says: sounds amazing, but just might be factory.

POST 10Original post

I agree with Jon, if you are not willing to make something the Fuster is a good unit at a good price...I did my own, same concept. just cheaper and gets hands dirty....

POST 11Original post

re: horsepower gain while it is true that all production cars are somewhat of a comprimise, i doubt if the amount of hp avail. by simply swapping mufflers is enough to justify the extra $$$$$ given that most a/m mufflers cost 1$+, and given the 5-10 ( maybe hp) gained, probably at the top end to boot, unles one was building a full out race car, i would just be happy with some mellow tones.

POST 12Original post

YUP - what you are really after is iHP (or imaginary horse power) because almost without exception the non-race car driver cannot tell 5-10 hp (IMO) and what one thinks sounds fast... is fast... that said, my new paint job is adding some serious HP to my ride

POST 13Original post

No, the horsepower is real. If you drive around at 3800 rpm instead of 2500 because it sounds better, you have an extra 50hp at your foot when you need it. So a better sounding exhaust gives you 50hp.

POST 15Original post

I have Tubi. Very quiet until you get on it. Puts a smile on my face every time.

POST 16Original post

Fabspeed sucks. Do the hack on a used set of cans and call it a day. BTW...What kind of oil are you using?

POST 18Original post

Tdi, Check out his link. It is the "cliff notes" version. Stock mufflers to PSE Mod

POST 19Original post

Fister D's are basicly production hack mods aren't they? (Well done hack's at that)

POST 21Original post

Quotes source post: 6809612

Well done production hacks......that's funny. I like to call them "modifications"...hack sounds so "uncivilized"

POST 22Original post

You know I hold your work in high regard !! as an "exhaust gas projection redistribution channel fitter" your work stands miles above the rest

POST 23Original post

Quotes source post: 6817776

[Image-only post; no author-written text. Original image references:] https://rennlist.com/forums/images/smilies/beerchug.gif

POST 24Original post

Has anybody done both "Fister" um, modification ( 1 AND 2 ) on 3.6 cans? Anybody, anybody, anybody, Ferris?

POST 25Original post

Its been done with a larger pipe between the two pipes - not the J pipe, the J pipe is just too flow restrictive IMO

POST 26Original post

I mean, the Fister Mk 2 mod of a 2 1/4" pipe from the muffler plug to the exhaust exit pipe AND the 1" pipe between the inlet and the exit pipes on a 3.6 muffler. BTW, I did do the 2 1/4" pipe (MK 2) on mine, and it is GREAT, but I want more.

POST 27Original post

Quotes source post: 6818499

Do the MK I mod and report back. Before and after vids with sound would be great!

POST 28 / ORIGINAL POSTEROriginal post

Thanks for all the replies. Lots of aftermarket and hack stuff for me to research now. Someone asked which oil I use: Mobil 1 and changed it myself. Pretty easy, BTW. I believe this forum provided the DIY. Question on the "hack" : Because I have a bad/ loose baffle (or who knows what) inside the muffler, won't that have to be repaired? How hard is it for a muffler shop to diagnose/repair something like that? Or should I get a used OEM driver side unit and have the hack done at that time? Is there a "long version" of the hack for more details? Do you have this done at any muffler shop or is it a detailed operation? I'll continue looking for good used (cheap!) ss exhausts as well. Anyone selling?

POST 29Original post

Quotes source post: 6820976

Get you favorite beverage, sit down and read this thread. It has a LOT of info. PSE Mod

POST 30Original post

Robin Sun makes or used to make his RSR version of 996 mufflers--cutting them open, altering the interior, and re-welding. If something is loose inside, I'm sure opening them up would facilitate resolution. His website doesn't list 996s anymore, but the google cache does. I wonder if he stopped doing 996s?

POST 31Original post

Quotes source post: 6820976

it all depends on how much louder you want the car to be. If not any louder.....buy a used set of stock cans. I for one have a low mileage 1999 21k set of 3.4 oem cans. Others here also have stock mufflers for your 01 that will probably sell If you want performance - for reasonable price look at AfterHours Muffler or M&K exhaust. These will provide better sound and less weight than a hacked up OEM solution. Or look at GHL, Fabspeed Tubi and pay much more. or you can do the hack....

POST 32Original post

Somewhere on some thread in a Galaxy far far away, somebody probably said they put ONE muffler by-pass pipe on one side of his Porsha. Said the sound was perfect! Two bypass pipes are too loud. Some got on his case about the 40lbs less weight on one side.....he said with a driver in the car there was 200lbs more weight on one side anyway. He had a point. Buy a pair, try putting it on one side, check it out....I may buy the other one.

POST 33Original post

For $200 each, anybody try adding one of these things? Potentially easier to rig up than the factory vacuum operated system: http://cgi.ebay.com/ebaymotors/QTP-2...#ht_2177wt_892

POST 34Original post

I'm sorry to steal the thread, but it kind of pertains.....has anybody just taken off the cat and used a bypass pipe. (for off road use only) How does it sound?

POST 35Original post

Quotes source post: 6824705

kind of a good idea, but its not built for Porsche... so its a "universal" which IMO lends to lots of fit up issues and "Jerry Rigging" it to work. Nice looking stuff - looks quality $400 gamble and then start "messing around" - no thanks

POST 36Original post

Quotes source post: 6824705

A lot of money, plus not a lot of room to work with down there. Exhaust sounds so good, why would you ever want to turn it off

POST 37Original post

I've seen a couple of links to actual dyno results. From Fabspeed I see http://www.fabspeed.com/996_GT3_dyno1.html . There aren't a lot of details about this picture (headers, cats, mufflers, everything), but if I were to guess that everything was done, is it saying that for almost 3K you get 16 hp?

POST 38Original post

One of the usuals at our weekly coffee get-togethers had a similar situation; bad baffle. He purchased a set of stock mufflers and had them Fister-ized. They sound great, and are high value IMO

POST 39Original post

Order a set of Fister-modded cans from Darin and send him your cans on trade. He might take the one with a loose baffle. Alternatively, you could simply buy the modded cans from Darin and keep yours. Easy decision either way.

POST 40Original post

I believe Arnee has 200 cell cats and Fister modded cans. That would be an option as well if the cans are too tame.

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