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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHLooking for bypass pipes for 996 C4S
Leading reported evidence
Run fisters exhaust
Performed · outcome unconfirmed
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Performed · outcome unconfirmed
I am running the Fisters exhaust but will be deleting the cats soon.
Leading evidence: 'Run fisters exhaust' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace entire cat-back 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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Suggestion
Perfect sound, no drone, cheaper than replacing entire cat-back exhaust with some aftermarket system.
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Suggestion
you can use the factory OEM Tips with our muffler bypass.
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Suggestion
You will re-use the tips that are currently on the car.
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12 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
6SpeedOnline: 1 discussions
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Generation: 20261027T025149Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Would anyone be able to tell me if there are any bypass pipes available for the 996 C4S that utilize the existing oval muffler tips or come with a set of oval tips, or they can be the turbo style double round tips?
2009 cabriolet street pleasure driver.
I was originally worried it would get to loud with a modified exhaust but.
I just had the Gundo Hack with 2"pipe done to my OEM mufflers and it sounds much better, noticeable just when you put your foot down.
I think I would like to add a center muffler bypass also and not sure on what design to go with if it matters for HP and Sound
Fab Speed style Xpipe or Sharkworks/ BillyBoat Cross over style.
Thanks in advance
Looking on the site they appear to be just stright pipes, no tips.
Do you have these on your C4S, or would you happen to have a link?
Thanks for your help.
I received a message from Cargraphic regarding the difference between their two X pipe designs, this is the response.
DEAR TOM
HP AND TORQUE GAIN ARE NEARLY IDENTICAL
THE OPEN ONE IS QUIETER AS THE GAS POSTSCOLLIDE ; SLIGHTLY DEEPER SOUND
THE CLOSED ONE HAS A SEPERATED GAS STREAM ANDIS LOUDER ; MORE HIGHER SOUND
I am running the Fisters exhaust but will be deleting the cats soon. You will re-use the tips that are currently on the car.
http://www.maxspeed-motorsports.com/996mb.html
Porsche 996 99-05 C2 C4 C4S Muffler Bypass Pipes
Product Fitment
:
Porsche 996 99-05 All Models exc. Turbo
Warranty
:
3-Year warranty against any defects.
Product Description
NHP 996 Muffler Bypass Pipes, made of T-304 Polished Stainless Steel, mandrel bend piping. This exhaust shaves approx 40 to 50 pounds of the rear. The NHP Bypass Pipes are different then all others on the market, our bypass pipes have a little more travel due to the shape of the piping this allows to retain a little more backpressure,
you can use the factory OEM Tips with our muffler bypass.
That contradicts what they posted previously, I believe on Rennlist. When they first developed the bypass they stated that the closed design made better power than the closed design.
Thanks for that, I must have been looking at the wrong ones.....any idea whats involved with reusing the existing tips? Will I need to weld, or is this all diy bolt-on application?
This is the exact mod I've done to my 997.2. My only regret is that I waited so long to do it. Perfect sound, no drone, cheaper than replacing entire cat-back exhaust with some aftermarket system. I get compliments all the time on how good the Gundo Hack and crossover pipes sound. Get to it.
I looked at mine and they appear to bolt on. The major work is going to be removing the mufflers, I suggest if you can remove the rear bumper, it'll make the job much easire.
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Well, I just came across what I wrote 5 years ago and it makes no sense. I can't remember what I was trying to say either. The internet is a weird place.
This is a source reference. Confirm exact model applicability in the original material.
