Custom X-Pipe
#1
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Guys I need some help regarding getting a custom X pipe installed. I have been trying to search for something definitive but I couldn't find anything for my 997.1.
So I stopped by my local custom exhaust guy & asked him how much it would cost to get a custom made X-Pipe, similar to the few that are on the market, I was very impressed with the price he gave me, it was about 1/4 of the retail price of other brands and would be custom built on to the car.
My question is this, can anyone tell me what diameter tubing is used, the OEM size is 2.1inches IIRC, but I think I should go to 2.5 inches; if anyone has done this mod to a Gen 1 please chime in with thoughts and opinions and what was the sound/performance improvement like, if any.
Thanks
Nick
So I stopped by my local custom exhaust guy & asked him how much it would cost to get a custom made X-Pipe, similar to the few that are on the market, I was very impressed with the price he gave me, it was about 1/4 of the retail price of other brands and would be custom built on to the car.
My question is this, can anyone tell me what diameter tubing is used, the OEM size is 2.1inches IIRC, but I think I should go to 2.5 inches; if anyone has done this mod to a Gen 1 please chime in with thoughts and opinions and what was the sound/performance improvement like, if any.
Thanks
Nick
#2
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For that sort of pricing he might want to make a dozen!
Where are you located? Who's the shop?
Where are you located? Who's the shop?
#3
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Are you going Cat-less or putting in a pair of hi-flow cat ?
The cat makes a big difference in prices
I got quote with 2 hi-flow vibrant 200 cell cat locally and it was about U$1400 installed
The cat makes a big difference in prices
I got quote with 2 hi-flow vibrant 200 cell cat locally and it was about U$1400 installed
#4
Drifting
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Thanks
#5
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#6
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He already had a 996 turbo and a GTR up on the ramps for a full custom exhaust.
I'll update with lots of pics of the install and sound bites of before & after.
If anyone can provide any data on the diameter I'd appreciate it.
#7
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I say go NO bigger than the stock pipe diameter as you are already removing the most restrictive component in the system (the cat) and that will increase flow but decrease back pressure which will affect your low-end. So you want to maximum flow by removing the cat but limit back pressure drop to not hurt the low-end. You can take this FVD cat pipe as reference and see how they deliberately make a U-design to maintain proper back pressure. I told my custom exhaust shop to make a Cat pipe using U-design approach with the vibrant 200 cell high-flow cat.
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#9
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I say go NO bigger than the stock pipe diameter as you are already removing the most restrictive component in the system (the cat) and that will increase flow but decrease back pressure which will affect your low-end. So you want to maximum flow by removing the cat but limit back pressure drop to not hurt the low-end. You can take this FVD cat pipe as reference and see how they deliberately make a U-design to maintain proper back pressure. I told my custom exhaust shop to make a Cat pipe using U-design approach with the vibrant 200 cell high-flow cat.
vern1 I hadn't found any info on anyone fitting this to a 997.1, any links? Primarily going for a better sound and to remove the most restrictive part of the exhaust system.
#10
Drifting
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I think guys use the xpipe on the .2 to get rid of the central muffler not the cats. On the .1 most guys need the cats to pass emissions and we don't have the extra muffler
There are about 100 threads on "best exhaust mod" etc for the .1 and .2. you just need to plow through them. I would say that the consensus (just my interpretation and excluding the emissions issue) is that going with no cats can be very loud and "fumey" for the .1. Some guys has gone with cats and no muffs but also on the very loud end of the scale
I would say the "best" route is headers, sport cats and muffs (Gundo, borla etc)
Cheers
There are about 100 threads on "best exhaust mod" etc for the .1 and .2. you just need to plow through them. I would say that the consensus (just my interpretation and excluding the emissions issue) is that going with no cats can be very loud and "fumey" for the .1. Some guys has gone with cats and no muffs but also on the very loud end of the scale
I would say the "best" route is headers, sport cats and muffs (Gundo, borla etc)
Cheers
#11
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Thanks for the advice lowbee, I had watched the Fabspeed video regarding the concept of the X-Pipe & the theory of the X-pipe and the high to low pressure draw from the exhaust system:
FABSPEED MOTORSPORT | X-Pipe Flow Demonstration - YouTube
vern1 I hadn't found any info on anyone fitting this to a 997.1, any links? Primarily going for a better sound and to remove the most restrictive part of the exhaust system.
FABSPEED MOTORSPORT | X-Pipe Flow Demonstration - YouTube
vern1 I hadn't found any info on anyone fitting this to a 997.1, any links? Primarily going for a better sound and to remove the most restrictive part of the exhaust system.
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__________________
Porsche Performance Specialist
John@Fabspeed.com
215-618-9796
Fabspeed Motorsport USA
155 Commerce Drive Fort Washington, PA 19034
www.Fabspeed.com
Porsche Performance Specialist
John@Fabspeed.com
215-618-9796
Fabspeed Motorsport USA
155 Commerce Drive Fort Washington, PA 19034
www.Fabspeed.com
#12
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$300 for a full system!? I couldn't even buy all the materials for that price. What's he making it out of, aluminized tubing probably. Check my thread in my sig, I made my own.
#13
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More than likely i'll be going for the gundo hack to get the sound I want
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I watched the vid in your sig, any other clips of yours on start up, drive by so I can get an idea of the sound, thanks.
Last edited by Ni_Mo; 08-08-2016 at 10:12 AM.