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Old 02-06-2002, 07:56 PM   #1
Rocky WRX
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Thumbs up PDE Up Pipe

My PDE up pipe arrived today. I haven't seen any other up pipes in person to judge how it stacks up to other brands, but it looks like a nice quality piece to me. I'm attaching a few pics so you can judge for yourself.
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Old 02-06-2002, 07:57 PM   #2
Rocky WRX
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The flanges have smooth edges. The pipe is welded on both the inside and outside to the flange with a smooth weld. The inside of the pipe is smooth with no burrs, it looks machined. The EGT bung is rotated from its stock position, and there is a bracket to mount the stock heat shield.
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Old 02-06-2002, 07:58 PM   #3
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One thing worth mentioning is that the pipe is not bent prior to the turbo flange, so that it enters the flange at an angle other than 90 degrees. Other up pipes I've seen pics of look like they have a slight bend, and enter the turbo flange at something closer to a right angle. The pipe looks like it's painted with a silver paint.
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Old 02-06-2002, 08:02 PM   #4
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One last pic
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Old 02-07-2002, 12:16 AM   #5
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Hi all. Just wanted to clarify, the up-pipe does have a bend in the tube at each end, but at the turbo end it is only a slight bend just before the flange, and not as obvious as at the other end.
The "silver paint" is VHT. I thought they looked better than in the raw finish. We're thinking about ceramic coating these things in the future - any opinions or preferences either way?

Regards,

Ian.
PDE Inc.
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Old 02-07-2002, 10:28 AM   #6
Rocky WRX
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Ian, thanks for the clarification.

I looked more closely, and there is indeed a slight bend in the pipe just as it enters the turbo flange. This is different than some other up pipes, where there is a pronounced bend a couple of inches from the flange. This is just an observation, I'm not judging the relative merits of either design.

I have one more interesting observation. I took a magnet and applied it to various parts of the up pipe. It stuck to both flanges, the EGT bung and the heat shield bracket. It did not stick to the pipe itself.

Last edited by Rocky WRX; 02-08-2002 at 07:06 AM.
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Old 02-07-2002, 08:38 PM   #7
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Looks very nice........Where can I pick one up at?

Do they also make mid pipes ?
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Old 02-08-2002, 07:03 AM   #8
Rocky WRX
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The manufacturer is


I bought mine from www.spimotorsports.com (a.k.a. Irvine Subaru).

There's a thread in the Vendors For Sale forum started by this vendor.
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Old 02-08-2002, 04:00 PM   #9
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Thanks for the info....... Now I just need to find a good mid pipe that will on my 5 Zigen.
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Old 02-18-2002, 10:04 PM   #10
Rocky WRX
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Thumbs up

I just got finished installing my PDE up pipe this weekend. It fit perfectly, NO LEAKS.

I'm a satisfied PDE customer.
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Old 02-19-2002, 12:32 AM   #11
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did you use new gaskets?

One more thing, did you have any problems with seized nuts? if so how did you resolve the problem?
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Old 02-19-2002, 06:51 AM   #12
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I had new gaskets on hand just in case, but ended up re-using the old gaskets, because they looked okay. They're made of metal, and pretty durable.

I had no issues with seized bolts. The car has about 9300 miles on it. I sprayed the bolts with WD-40 and let it soak for at least 30 minutes before wrenching on them. I went in from the top, since I was also upgrading the turbo, so I didn't remove the passenger manifold.
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Old 02-20-2002, 10:30 PM   #13
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nice to hear that, it does look like a nice piece.
so how does this piece perform? did you notice a difference?
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Old 02-21-2002, 03:19 PM   #14
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I expect it gives the same 8-10 hp boost other up pipes have shown. Since I upgraded my turbo at the same time, I can't say how much improvement is due to the up pipe alone. The exhaust note and turbo sounds are noticeably louder.
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Old 02-22-2002, 02:49 PM   #15
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Rocky, any modifications to the heat sheild to make everthing fit? Thanks.
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Old 02-22-2002, 08:42 PM   #16
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There are 3 heatshields involved, and none of them must be cut specifically to fit the up pipe.

The upper turbo heat shield will fit fine, although many aftermarket downpipes will require that it be trimmed.

The heat shield located below the turbo and behind the up pipe will bolt to a bracket on the PDE up pipe. This bracket is unique to the PDE up pipe, so I don't think other up pipe brands will permit this heat shield to remain installed.

The passenger manifold heat shield must be removed to access the bottom of the up pipe, and to remove the manifold if you're going in from below. If you don't have the special tool needed to remove the O2 sensor from the manifold, you will have to cut the heat shield so you can remove the shield with the sensor installed. This is not hard, and is necessary for all up pipes.
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Old 02-26-2002, 09:16 PM   #17
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Anybody know what the main differences between this pipe and the Vishnu pipe, other than price? Thanks, Larry

And I'm not trying to be a smart ass, so go easy on me ok?
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Old 02-26-2002, 09:33 PM   #18
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You could do a search and find all the info yourself. But I don't mind pointing you in the right direction...

Vishnu
Material: 321 stainless steel
Extras: expansion collars at the flanges for increased strength (overkill imho), extra bung for wide band O2 sensor, 1/2 inch thick flanges.

PDE
Material: 304 stainless (?)
Extras: Heat shield bracket, painted finish (very clean look), 3/8" thick flanges, extra bungs available for extra money.

Both units seem to be very well constructed with nice welds. They are welded inside and outside the flange. But ultimately, any up-pipe that is built well and is backed by the manufacturer will be worth the price. With vishnu, you pay for a bit of over-engineering, tougher materials and a little more labor into the finished product. Not to say that PDE, M2, Perrin etc. are inferior because they aren't.
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Old 02-26-2002, 11:25 PM   #19
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Thanks, I really appreciate that. Actually, I 've done several searches over the past few days trying to decipher this stuff. To me it's always better to talk to a real person, If they know what they are talking about...Kinda like Talking to voice mail on the phone.

Thanks again. I appreciate your time..

Larry
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Old 04-04-2002, 05:27 PM   #20
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Rocky WRX,

Thanks for the pics. Really looks good. My WRX is looking forward to it's next upgrade!

Cheers, GoodFinder
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Old 04-07-2002, 07:58 PM   #21
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Thumbs up

I've had my PDE uppipe in for a few days, and I love it! The power increase is noticable. The install went pretty smooth. I broke one of my downpipe bolts even though I soaked them with PB the day before. The nut was cross-threaded. That was the only real problem. I removed the stock pipe from below by jacking the engine a few inches. I did not remove the turbo, but I did remove the intercooler. I used new gaskets on both ends of the uppipe and the downpipe gasket. I have no leaks yet, and hopefully it stays that way. I'm very impressed by the quality of the PDE uppipe and the fact that I can keep my heatshields.

Thumbs up!
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Old 04-10-2002, 02:57 AM   #22
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Im getting one of these for sure! and a set of his fuel rails and his downpipe! LOOK AT THE FRIGGIN QUALITY! Check his site out! They are making a turbo kit too! www.pde-usa.com
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Old 04-22-2002, 02:35 AM   #23
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BUMP for PDE!
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Old 05-03-2002, 05:07 AM   #24
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Quote:
Originally posted by PDE
Hi all. Just wanted to clarify, the up-pipe does have a bend in the tube at each end, but at the turbo end it is only a slight bend just before the flange, and not as obvious as at the other end.
The "silver paint" is VHT. I thought they looked better than in the raw finish. We're thinking about ceramic coating these things in the future - any opinions or preferences either way?

Regards,

Ian.
PDE Inc.
I just picked up your PDE up-pipe and down-pipe today. They look great I can't wait to put them on my WRX. I was thinking about ceramic coating my up-pipe. I would have got a ceramic coated one if I had the opportunity. that's my $.02
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Old 05-07-2002, 03:35 PM   #25
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Im installing my Uppipe this weekend! I'll post a REVIEW after i do!
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