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Old 11-21-2004, 10:33 PM   #1
rich22
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Default Cobb Up-Pipe is now available to buy :)

Check it out:

http://cobbtuning.com/wrx/power-i.html#uppipe





Quote:
Salt Lake City, Utah – November 17th, 2004 – COBB is proud to introduce two new uppipes for the Subaru WRX, Forester XT and Baja Turbo models. Two materials will be made available, dependant on needs and budget. Both models feature an investment cast design which offers a superior finish and quality compared to the sand casting methods employed by others. The inside finish of the investment cast uppipe is a perfectly smooth surface that provides optimal flow unlike sand casting which leaves a rough and porous finish.

Other than flow and velocity, we also focused on making the uppipe as reliable as possible and to properly deal with the heat cycling all uppipes must endure. For the highest level of reliability, we opted for an investment casting which means the entire component is made as one solid piece with no welds or auxiliary components to fail. Furthermore, we selected metal specifically suited for the high temperatures, heat cycling, and vibration that the uppipe must endure.

Our standard series uppipe is constructed of investment cast 304 stainless steel. This alloy handles heat cycling very well, has excellent corrosion resistance, and does not expand or contract to the same extent as other alloys more commonly used.

The Pro series uppipe is constructed from investment cast Inconel 625. Inconel is considered to be a “superalloy” due to its superior strength, corrosion resistance, and stability under extreme heat. It is by far the superior metal for this application and leaps and bounds better than even 321 Stainless Steel. Inconel is the same material used to make most Formula 1 and WRC headers.

For convenience, we have designed the uppipe with two bung locations that can be machined to support the factory EGT sensor, an aftermarket sensor, both or no sensors at all.

Applications:
2002-2005 Subaru Impreza WRX
2004-2005 Subaru Impreza WRX STI
2004-2005 Subaru Forester XT
2004-2005 Subaru Baja Turbo
2005 Subaru Legacy GT and Outback XT

What makes COBB's uppipe unique?

While there is definitely no shortage of uppipes on the market, we feel as though there was still some room for improvement. For our development, we first took several factory uppipes and had them 3D “scanned” by using a CMM (Coordinate Measuring Machine). This gave us the critical dimensions of the flanges, angles and distances to within 0.0005". This information was this used to build an incredibly accurate 3D CAD model. From there, several configurations were tested in CFD (Computational Fluid Dynamics) software to find the design that offered the best flow rate and velocity necessary for optimal performance and turbo response.

For production, we employ a ceramic shell investment cast process that is by far more accurate than traditional sand casting methods. Due to the high tooling costs involved with producing investment cast pieces, it’s very rare for aftermarket pieces to utilize this method. We chose this route due to the quality and accuracy it provides us.

The dimensional tolerances are maintained to within 0.010” in raw cast form. The raw casting are CNC machined on the flange surfaces to ensure a perfect sealing surface as well as to maintain the exact three dimensional flange relationship. This means once machined the mating surfaces are not only flat but on the exact same plane and distance from each other as the factory component. This is performed to an accuracy of 0.001”, which is far superior to that of any exhaust jig traditionally used in handmade welded uppipes.

Due to the three dimensional accuracy capable with this process, and the high temperature stability of the metal alloys used, no integrated flex has been required. Including a flex section was considered but the benefits could not overcome the added cost involved, the increased failure rate at the flex section and/or weld points, or the exhaust flow degradation.

Each uppipe is supplied with custom made factory length steel studs. We took the route of having our studs custom made, instead of using a less expensive off-the-shelf part, in order to provide the highest level of compatibility with aftermarket downpipes and turbochargers. In addition, we use a special coated steel stud that won't sieze on the factory nuts -- unlike a stainless steel stud.

In the end, we feel as those we’ve produced a truly engineered solution that represents our level of commitment to Subaru performance.
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Old 11-21-2004, 10:56 PM   #2
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OH NOS!!!!one1! I will order it today so I can get it before the year 2086! $400 bones for an uppipe with no dyno graph to prove it is better or even the same as a gutted stocker which costs $0. Cobb.....I love you guys, I really do, but I fear you've stepped in something this time.
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Old 11-21-2004, 11:15 PM   #3
drees
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Wow those pipes are pretty! Cobb sure does go the extra mile in producing top-notch parts.
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Old 11-21-2004, 11:17 PM   #4
SolbergWRCfan
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Holy ish, $400 dollars for an uppipe?!?!?!? I'll take a Crucial Racing 321SS ceramic coated uppipe and save the $150 dollars tyvm. If Cobb sells a large number of the Inconel units I will know that PT Barnum was correct in his observation that a sucker is born every day.

Jon

PS: What will their TMIC cost? $3000?
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Old 11-21-2004, 11:23 PM   #5
InfamousDX
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APS and Cobb... hangin out in the expensive uppipe section
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Old 11-21-2004, 11:58 PM   #6
rich22
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Um there up-pipe is 235$. If you get the inconel thats more. So no its 235$ for an up-pipe if you compare it to the type of material other up-pipes are made of, doofuses.

I expected a smarter response from you unabomber
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Old 11-22-2004, 12:01 AM   #7
totoherbs
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Inconel... purty.
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Old 11-22-2004, 12:02 AM   #8
gjhsu
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The stainless steel one is $225. What's the big deal? Cheaper than the Autospeed one...
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Old 11-22-2004, 12:05 AM   #9
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Quote:
Originally Posted by rich22
I expected a smarter response from you unabomber
Cut me some slack. Sometimes I get it moods. I think you get my point though.
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Old 11-22-2004, 12:09 AM   #10
totoherbs
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Quote:
Originally Posted by SolbergWRCfan
Holy ish, $400 dollars for an uppipe?!?!?!? I'll take a Crucial Racing 321SS ceramic coated uppipe and save the $150 dollars tyvm. If Cobb sells a large number of the Inconel units I will know that PT Barnum was correct in his observation that a sucker is born every day.

Jon

PS: What will their TMIC cost? $3000?
Many many people pay $380 for the APS unit. So why is this high end item any different? They have a $225 unit for people with budget in mind... Inconel is for thoes who want the best and are willing to pay for it and if you think that an inconel pipe is a waste of money then I am sorry for you.
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Old 11-22-2004, 12:14 AM   #11
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For the full record, I 100% agree with totoherbs. While this uppipe doesn't have the traditional bling, it dominates all the competition with it's inconel hotness. It's been my #1 uppipe choice since the rumors first occured. I'm hoping that someone from Cobb reads this and sends me an inconel uppipe so that I might do a proper review for the sake of Nabisco since I can't afford one right now. Justin, Trey, Noah ....anyone home?
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Old 11-22-2004, 12:15 AM   #12
ptaaty
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do you think there will be new AP maps now? or are the normal ones close enough?

I wanted to get a TBE and have an upipe and have looked at getting an AP...but their stage 2 map doesn't say anything about an upipe....
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Old 11-22-2004, 12:16 AM   #13
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No new maps. Cobb's stuff will learn all normal bolt ons.
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Old 11-22-2004, 12:17 AM   #14
rich22
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Quote:
Originally Posted by Unabomber
Cut me some slack. Sometimes I get it moods. I think you get my point though.

Well i went to the www.perrinperformance.com website to look at there up-pipe and they didnt have a dyno graph.

I went to the turboxs.com site and looked at there up-pipe didnt find a dyno graph.

Going to prodrive site you cant find a dyno graph for JUST the up-pipe only the entire package.

The only site that i found that did have a dyno graph for there up-pipe was vishnu. However i do anticipate cobb will put up a dyno graph in the near future. They are busy as it is developing a TMIC , oil cooler , and intake.

Quote:
Many many people pay $380 for the APS unit. So why is this high end item any different? They have a $225 unit for people with budget in mind... Inconel is for thoes who want the best and are willing to pay for it and if you think that an inconel pipe is a waste of money then I am sorry for you.
well put
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Old 11-22-2004, 12:29 AM   #15
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No need to research buddy. Like I said, I'm just giving Cobb a little in the ribs. They can take it and I seriously doubt you will find a bigger Cobb supporter than I am. In fact, their uppipe just made my #1 uppipe on my Unabomber's recommended list.
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Old 11-22-2004, 12:37 AM   #16
WRXVII
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how long do you have to wait? 4-8 weeks to get one?
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Old 11-22-2004, 12:37 AM   #17
drees
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Quote:
Originally Posted by Unabomber
Cut me some slack. Sometimes I get it moods. I think you get my point though.
Heh I was going to give you a hard time about your moods today.
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Old 11-22-2004, 12:38 AM   #18
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8... or more.
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Old 11-22-2004, 12:39 AM   #19
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I've been feeling froggy tonight and it seems my fellow wagon owners have been on my back all night. Maybe I should go to bed.
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Old 11-22-2004, 12:41 AM   #20
hey1
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although newbie i am, i got your back bomber. btw.. i appreciate your nicely written FAQs. Time for you to do an engine management FAQ. hehe
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Old 11-22-2004, 07:16 AM   #21
Valhakar
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225 for a stainless steel pipe without bungs?



The Crucial Racing pipe is Stainless, Jet coated, and comes with pure copper gaskets for $250. Throw in the Crucial Lifetime Warranty and you have a much better deal.



They do not provide a CEL fix either. Crucial sends the resistor fix for those people that may have another engine solution besides COBB.



Quote:
Reduce backpressure and increase reliability with our CAD designed uppipe. Features an investment cast design and available in either 304SS or Inconel 625. Direct bolt in replacement for the factory catted uppipe. Complete with studs installed. Gaskets not included. Available with or without a EGT bung pre-machined for the factory sensor. Failure to use the factory sensor will result in a Check Engine Light unless you use the appropriate AccessPORT mapping.

Last edited by Valhakar; 11-22-2004 at 07:53 AM.
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Old 11-22-2004, 07:51 AM   #22
MisterX
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Our gaskets are pure copper. Inconel = gold plating.

CAD designed? Which one isn't?

Last edited by MisterX; 11-22-2004 at 08:00 AM.
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Old 11-22-2004, 07:54 AM   #23
Valhakar
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My mistake. I corrected my post. My argument still stands.
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Old 11-22-2004, 08:33 AM   #24
Supaboom
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my only question is why do they offer a egt bung, my understanding is that putting the factory EGT sensor back in there w/ no cats results in the sensor fying and possibly hurting the turbo?
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Old 11-22-2004, 08:46 AM   #25
Valhakar
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Some people would rather take that risk instead of tapping the exhaust manifold near cylinder 3. I know I will probably pay to have my EGT tapped simply because doing it without a garage is a real PITA.
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