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Re: X51 headers
Quote:
Dan L said:
Actually, I read somewhere earlier about the 997S headers,--don't go by appearances. Don't jump to conclusions.
Dan
Can you please forward me this info. every tuner that I have talked to (American and European) thinks that these headers are not worth anytthing and there is a gain there.
I have one thing to ask though lets not discuss this if you are not a believer of aftermarket improvements. I do not think that what Porsche builds is perfect since they have to think from marketing perspective, comply different emissions and etc. I believe that it can be improved and once you are believer of one side it is pretty much a dead discussion.
Re: X51 headers
Quote:
Queram said:Quote:
Dan L said:
Actually, I read somewhere earlier about the 997S headers,--don't go by appearances. Don't jump to conclusions.
Dan
Can you please forward me this info. every tuner that I have talked to (American and European) thinks that these headers are not worth anytthing and there is a gain there.
I have one thing to ask though lets not discuss this if you are not a believer of aftermarket improvements. I do not think that what Porsche builds is perfect since they have to think from marketing perspective, comply different emissions and etc. I believe that it can be improved and once you are believer of one side it is pretty much a dead discussion.
Fabspeed claims over 40 HP for their exhaust system .
( heck, they claim 10 HP for a rubber elbow ) Lol
Some aftermarket vendors claim up to 32 HP for the K&N Cold air intake system (and they can prove it on a dyno.)
That's over 70 HP right there .
If you believe everything these yokels tell you , go for it.
Re: X51 headers
Quote:
Gemballa said:
Today I went to the Porsche dealer and checked the headers part number for both the 997s and the 997s x51 they have deferent part number.
So I believe that thy look deferent.
I think the reason for the post was to try and get a picture of the x51 headers. There are pics of the 997S headers on the Fabspeed website and it's obvious they are different than the one on the 997 - we all just want to see what the x51 looks like. It would have been interesting to see if the x51 part number and the 997 part number were the same or maybe the same as the 996 part number. Anyone know?
Aug 16, 2006 11:49:01 AM
- 03-turbo911
- Pilot
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- Loc: Bahrain
- Posts: 337, Gallery
- Registered on: Aug 17, 2004
- Reply to: jeffbco
Re: X51 headers
Quote:
jhbrennan said:
The 997S headers (shown at the bottom of the attached picture) sure look more restrictive than the x51 headers.
These look like the stock 997 S headers. The X51 headers are shown in the above picture by avantgarde and look alot like the Fabspeed headers.
Aug 16, 2006 12:07:17 PM
- jeffbco
- Pilot
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- Loc: Denver
- Posts: 494, Gallery
- Registered on: Mar 18, 2006
- Reply to: 03-turbo911
Re: X51 headers
Quote:
03-turbo911 said:Quote:
jhbrennan said:
The 997S headers (shown at the bottom of the attached picture) sure look more restrictive than the x51 headers.
These look like the stock 997 S headers. The X51 headers are shown in the above picture by avantgarde and look alot like the Fabspeed headers.
I think that's what I said - the bottom headers in the picture are what came off a stock 997S.
Re: X51 headers
Wow...those look like they'd make a difference vs stock.
Keep in mind that a 20 hp increase over the whole power curve would definitely be faster. If it's only at or around peak or redline then you probably won't feel much improvement.
Quote:
chili said:
What about Tubi? They don't make exagerated claims like the others. Even my dealer says that there is some power gain, but definetely no more than 20hp.
Keep in mind that a 20 hp increase over the whole power curve would definitely be faster. If it's only at or around peak or redline then you probably won't feel much improvement.
Aug 18, 2006 7:53:18 PM
- KiwiCanuck
- Co-Pilot
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- Loc: Canada
- Posts: 210, Gallery
- Registered on: Sep 14, 2005
- Reply to: Avantgarde
Re: X51 headers
...Avantgarde....they, the x51 photo of yours....look JUST like the OE on my 997 C2.....now replaced with EvoMs ...which look just like the FabSpeed image our friend jhbrenna showed us. By the way the other headers he shows, from the Fabspeed site, are NOT 997 design (c2or 4 it is claimed)--they are 996---
Cheers
KiwiCanuck
Cheers
KiwiCanuck
Aug 18, 2006 9:05:47 PM
- jeffbco
- Pilot
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- Loc: Denver
- Posts: 494, Gallery
- Registered on: Mar 18, 2006
- Reply to: KiwiCanuck
Aug 19, 2006 1:48:57 AM
- Avantgarde
- Senior
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- Loc: City State
- Posts: 708, Gallery
- Registered on: Apr 6, 2005
- Reply to: KiwiCanuck
Re: X51 headers
Quote:
KiwiCanuck said:
...Avantgarde....they, the x51 photo of yours....look JUST like the OE on my 997 C2.....
This are indeed the headers from my C2S w/ X51, I believe the C2 has rather similar headers that are albeit smaller in cross sectional diameter.
Here's a closer picture...
Aug 19, 2006 2:31:03 AM
- jeffbco
- Pilot
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- Loc: Denver
- Posts: 494, Gallery
- Registered on: Mar 18, 2006
- Reply to: Avantgarde
Re: X51 headers
what is really weird is that the X-51 headers are not equal length (rule no. 1 for good headers). Perhaps there is room for improvement, even for X-51 owners.
However, I agree with Dan: there are other factors to take into account (style of the merge collector, clean wlekds, polishing etc.). Ultimetaly, there is only one real way to find out: before and after dynos. All else is peculation.
However, I agree with Dan: there are other factors to take into account (style of the merge collector, clean wlekds, polishing etc.). Ultimetaly, there is only one real way to find out: before and after dynos. All else is peculation.
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