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Old 03-03-2009, 09:22 PM   #1
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GS Downpipe vs GS JT 3" Exhaust

So, my flexpipe is bad and the intermediate muffler is crusty and about to fall off, so might as well upgrade the exhaust.


Am I better off getting the Genuine Saab V2 Downpipe and (cutting out the intermediate muffler) and running the factory muffler?

OR

Do I go for the full JT 3" exhaust?

The full JT exhaust is cheaper than just the GS downpipe, anyone know if there's a difference in quality?

Also, GS is offering the full JT 3" exhaust with one or two mufflers. Can someone chime in here? I like a fair amount of exhaust noise/rumble, but I also live in a quiet neighborhood and return home late at night most nights. I also can't stand "drone" on the highway that a lot of aftermarket exhaust give. Is the single muffler just too loud?

Also, the JT system doesn't come with a cat. The T7 will throw a CEL without a cat, yes? Will a cheapo e-bay cat work just fine?

TIA,
-Chris
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Old 03-03-2009, 09:26 PM   #2
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Well the GS pipe is stainless steel so you wouldn't have to worry about it rusting out. The JT is aluminized steel which will eventually rust (how soon I don't know). From a JT downpipe that I've seen for a ng900/og9-3 in comparison to Nick's I'd take Nick's any day of the week. It smoother in terms of the flow pattern.



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Old 03-04-2009, 03:24 AM   #3
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As far as longevity is concerned I wouldn't be too worried about the JT. The one on my 9000 is 6 years old. I think you'll also be fine with a catco or something similar (about $40-60 from Summit or Jegs).
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Old 03-04-2009, 05:14 AM   #4
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I have the JT DP in my 2000 have been running it for 4 yrs now its it rusty but the DP burns so hot that it really never get caked or flaky at all, the rest of my 3" exhasut is steel but it looks a little worse and have only been running it for 3 years... but not rusted through.

If you are think cash is an issue now but might not be in 4 or so years than I would say get the JT and if you still have and love the car in 4 year and have more cahs then buy SS.
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Old 03-04-2009, 06:33 AM   #5
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Don't cheap out on the cat! It will be the main bottleneck of your system.

For example, Nick had issues with the Speedparts cats:
http://www.trolltuner.com/archives/2...ting_test.html
http://www.trolltuner.com/archives/2...essure_pt.html

A good 3" Magnaflow race cat shouldn't cost too much.
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Old 03-04-2009, 02:45 PM   #6
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I think I've decided on the full JT system.

As beautiful as the SS GS v2 Downpipe is, my exhaust is pretty ratty and I'm on a budget.


So now the question is one muffler or two... hmmmmm.

Anyone have experience with these?
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Old 03-04-2009, 03:05 PM   #7
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I wish I would have waited and gotten the full JT exhaust instead of only the BSR cat-back for over $400...
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Old 03-04-2009, 04:30 PM   #8
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I don't know.... I had the JT on my 9K and it was cool. But now after having the BSR on my 9-5 I think I prefer that. Just enough to know its there and just enough to forget it. As far as quality I consider them equal.
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Old 03-04-2009, 05:01 PM   #9
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i would go for two, you can always cut one out if it isn't loud enough
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Old 03-04-2009, 05:14 PM   #10
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As far as longevity is concerned I wouldn't be too worried about the JT. The one on my 9000 is 6 years old. I think you'll also be fine with a catco or something similar (about $40-60 from Summit or Jegs).
mike, you only drive your 9000 in the summer with temperatures in the 90's, no rain and relative humidity in the 50's. not a fair comparison.

chris, if you are plan on keeping your 9-5 for 2 or more years.....go the stainless route. initial cost a bit tough to swallow but worth it in the long run. you will be glad you did.

I learned the hard way...twice...but i'm polish and sometimes it takes a bit to sink in.

my 9000 3" JT after 2 years


go stainless,
dave
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Old 03-04-2009, 05:18 PM   #11
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wow thats ugly.


stainless does look good too........
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Old 03-04-2009, 05:18 PM   #12
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Hey Dave...I actually put three winters on that exhaust. Two on my old 9000, one on the Aero
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Old 03-04-2009, 05:19 PM   #13
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you drove the aero in the winter?!?!

i think the world is going to implode.
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Old 03-04-2009, 05:24 PM   #14
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no way mike drove his newer 9000 in the winter. he is absolutely lying to us. his car looks better now than it did when it was new...if that's possible.
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Old 03-04-2009, 07:20 PM   #15
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I went for the JT full 3 inch with two mufflers and like the way it sounds. It is louder but not to the point of being obnoxious. I bought the Catco converter from Summit. I did have an issue with it, it started to rattle internally after about a year. I was able to return it to Summit and they sent me a new one for free. No issues since then. I did have a hose pop off and didn't realize it for a while, not sure if that would have damaged the converter.

My exhaust is now 3 years old and in fine shape, but I only drive the car in the summer.
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Old 03-04-2009, 09:44 PM   #16
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I would go for the 3" JT system with one muffler. I like louder exhausts.

Also, you need a 3" high flow cat to run with the 3" JT exhaust, not a factory cat.
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Old 03-04-2009, 10:00 PM   #17
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Quote:
Originally Posted by viggenkid View Post
i would go for two, you can always cut one out if it isn't loud enough
Good call!

Quote:
Originally Posted by daveship View Post
mike, you only drive your 9000 in the summer with temperatures in the 90's, no rain and relative humidity in the 50's. not a fair comparison.

chris, if you are plan on keeping your 9-5 for 2 or more years.....go the stainless route. initial cost a bit tough to swallow but worth it in the long run. you will be glad you did.

I learned the hard way...twice...but i'm polish and sometimes it takes a bit to sink in.

my 9000 3" JT after 2 years


go stainless,
dave
I plan on keeping the car for....... as long as possible, another 5-8 years
seems reasonable. Hmmmmmmmmm, something to think about! Was that 2 years of driving the car through the winter though?

Quote:
Originally Posted by viggenkid View Post
wow thats ugly.


stainless does look good too........
$tainless $teel

Quote:
Originally Posted by mcrowley View Post
Hey Dave...I actually put three winters on that exhaust. Two on my old 9000, one on the Aero
Quote:
Originally Posted by viggenkid View Post
you drove the aero in the winter?!?!

i think the world is going to implode.
Quote:
Originally Posted by daveship View Post
no way mike drove his newer 9000 in the winter. he is absolutely lying to us. his car looks better now than it did when it was new...if that's possible.
Haha, I don't believe this either!

Quote:
Originally Posted by mickeym View Post
I went for the JT full 3 inch with two mufflers and like the way it sounds. It is louder but not to the point of being obnoxious. I bought the Catco converter from Summit. I did have an issue with it, it started to rattle internally after about a year. I was able to return it to Summit and they sent me a new one for free. No issues since then. I did have a hose pop off and didn't realize it for a while, not sure if that would have damaged the converter.

My exhaust is now 3 years old and in fine shape, but I only drive the car in the summer.
What hose popped off?

Yeah, I've talked to a few people that have been running JT systems for 5-6+ years and the pipes still look good. I also keep my Aero off the road during the winter, so I'm sure that will help!

Quote:
Originally Posted by Saabeh View Post
I would go for the 3" JT system with one muffler. I like louder exhausts.

Also, you need a 3" high flow cat to run with the 3" JT exhaust, not a factory cat.
I already found a Magnaflow 3" cat (13" total length, 6" width) on ebay for $70 shipped!




As for the rusting issue... A few coats high temp paint???
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Old 03-04-2009, 10:02 PM   #18
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Yeah paint saves things, or at least prolongs the process of rusting.
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Old 03-04-2009, 10:19 PM   #19
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Yeah paint saves things, or at least prolongs the process of rusting.
hmmmm....


I may just do that then!
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Old 03-05-2009, 03:20 AM   #20
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Quote:
Originally Posted by viggenkid View Post
you drove the aero in the winter?!?!

i think the world is going to implode.
Quote:
Originally Posted by daveship View Post
no way mike drove his newer 9000 in the winter. he is absolutely lying to us. his car looks better now than it did when it was new...if that's possible.
Nope, not a lie. First year I owned it (2005) I drove it that winter.

I was at the pay & spray once a week.
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