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NG900 & OG9-3 Performance, Mods & Tuning Covers Tuning & Performance modifications for the NG900 (1994 to 1998) & OG9-3 (1999-2002) & '03 Convertible

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  #1  
Old 18th April 2006
Sacko Sacko is offline
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Default Exhaust confusion

I've been meaning to upgrade to a 3" downpipe and saab sport catback, but i'm a bit confused as to what exactly i need for this upgrade.

specifically, in addition to a 3" downpipe and the saab sport catback, i'll need a flexpipe correct? what is the diameter of the stock flexpipe? will it restrict flow? will i have to get a new flexpipe, or is the stock one good to use?
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  #2  
Old 18th April 2006
Tweek's Turbos Tweek's Turbos is offline
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I went with a JT unit, which comes with the flex pipe, and transition peice to meet up with the smaller dia saabsport.

I think some of the new downpipes, like the one from genuinesaab are similarly equipted. Email and ask.
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  #3  
Old 18th April 2006
DFroelich DFroelich is offline
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I am not sure myself, but have you considered just a full 3" turbo back? You can get one at genuine for ~550 then a decent cat plus install for another 150.

Depending on which DP you get, that may be cheaper with max performance benefit. The obvious downside is no stainless piping.
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  #4  
Old 18th April 2006
Sacko Sacko is offline
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Quote:
Originally Posted by DFroelich
I am not sure myself, but have you considered just a full 3" turbo back? You can get one at genuine for ~550 then a decent cat plus install for another 150.

Depending on which DP you get, that may be cheaper with max performance benefit. The obvious downside is no stainless piping.
i've also heard that the jt cat's aren't very high-flowing, which concerns me a bit.

i was considering the jt full 3", but aside from living in new england and seeing the benefits of stanless steel, i'm affraid full 3" might be obnoxious.

any thoughts?

edit -- what is the stock exhaust size? 2.25"??

Last edited by Sacko; 18th April 2006 at 06:48 PM.
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  #5  
Old 18th April 2006
griffen nut griffen nut is offline
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Here's the deal....

You want a 3'' DP from GenuineSaab, JT, or Jak Stoll. Then you want the saab sport catback which can be found on ebay for $320 brand new. You do not need a new flex pipe, and this is why.

In chronological order from the turbo to the tail pipe...

1.)3'' DP from turbo the the flex pipe (the DP reduces to 2'' or so to match up with the flex pipe.

2.) The Saab Sport Catback also reduces to 2'' to meet the flex pipe

Cliffnotes:

-You need a 3'' DP and a Saab Sport Exhaust

-You do not need a new flexpipe

-You may want to order new exhaust clamps for like $10 because yours may be rusty


Hope this helps
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  #6  
Old 18th April 2006
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thanks griffen nut. i was pretty sure about what you wrote but it is good to read and affirm what i was thinking. what do people use to raise the car for installation? ramps, stands?
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Old 18th April 2006
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Jackstands.


The exhaust diameter on my 00 9-3 is 60mm.
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Old 18th April 2006
ParaMedic_Saab ParaMedic_Saab is offline
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could you not go to a local exhaust shop and have them fit a 3" flex pipe in there for super cheap ? Or would that not work.
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Old 18th April 2006
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60mm is close to 2.5"


3" is huge compared....
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Quote:
Originally Posted by turbotim
i lost it a third of the way down the 1/4 mile when i was loosing controll i said to myself, am i gonna live threw this, so dont forget to check youre tire pressure, safety first or you may not be alive to prove these turd monkeys wrong.
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  #10  
Old 18th April 2006
griffen nut griffen nut is offline
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Quote:
Originally Posted by ParaMedic_Saab
could you not go to a local exhaust shop and have them fit a 3" flex pipe in there for super cheap ? Or would that not work.
yea, but i dont think any Downpipes are made to fit up to a 3''flexpipe...most are made to fit to the size of the flexpipe. so i just say keep your flex pipe if you do DP and catback...if you want the 3'' flexpipe, just get a full 3'' JT if you live where they dont salt the roads
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  #11  
Old 18th April 2006
griffen nut griffen nut is offline
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if you plan on ever lowering your car, jack stands wont work when you do...i would just by a nice floor jack and a set of jack stands
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  #12  
Old 19th April 2006
Sacko Sacko is offline
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Quote:
Originally Posted by griffen nut
if you plan on ever lowering your car, jack stands wont work when you do...i would just by a nice floor jack and a set of jack stands
i'm assuming you meant ramps*

but thanks everyone for the replies!! clears things up a lot.

it's a little dissapointing that i have to reduce to the flexpipe after the downpipe, but if it will give me the performance gains that everyone else has i'll take it

Last edited by Sacko; 19th April 2006 at 12:21 AM.
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Old 19th April 2006
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Palmer1980 Palmer1980 is offline
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http://store.summitracing.com/partde...5&autoview=sku

Then:
http://store.summitracing.com/partde...5&autoview=sku


Now you have a 3" flexpipe. Anyone who welds should be able to deal with that...

Am I off on the goal here?
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Quote:
Originally Posted by turbotim
i lost it a third of the way down the 1/4 mile when i was loosing controll i said to myself, am i gonna live threw this, so dont forget to check youre tire pressure, safety first or you may not be alive to prove these turd monkeys wrong.
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  #14  
Old 19th April 2006
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One option is going for a 3" intermediate pipe after your 3" downpipe, it could be done quickly by any exhaust place for super cheap - especially if you supply the flex pipe and straight 3" tubing!
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  #15  
Old 19th April 2006
griffen nut griffen nut is offline
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Quote:
Originally Posted by Sacko
i'm assuming you meant ramps*

but thanks everyone for the replies!! clears things up a lot.

it's a little dissapointing that i have to reduce to the flexpipe after the downpipe, but if it will give me the performance gains that everyone else has i'll take it
haha yea i meant ramps
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  #16  
Old 19th April 2006
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A few points....

The JT cat has been shown to have issues. To get around that, buy the dp without the cat and have one welded in at any exhaust shop. You can get just the cat from summit and you'll save some cash.

Downpipes do typically have a reduced at the end to 60mm, but they can be ordered withouth this end so they would bolt to a 3" system.

The saabsport is able to handle power up to levels way up in the 350+ range. So considering this, its good price, stainless constructiong, and easy fitment, it is a good option. Pair this with a 3" downpipe from genuine or wherever. I'd say just keep your original midpipe/flexpipe section. If you want to replace later you can get your own made or buy this part from eeuroparts.com
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  #17  
Old 19th April 2006
Sacko Sacko is offline
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Quote:
Originally Posted by stromer
The saabsport is able to handle power up to levels way up in the 350+ range. So considering this, its good price, stainless constructiong, and easy fitment, it is a good option. Pair this with a 3" downpipe from genuine or wherever. I'd say just keep your original midpipe/flexpipe section.
yup, that's exactly my plan (now). thanks for the info. as always, very helpful and informative. i'll get the exhaust on as soon as money permits
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