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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Thread: Exhaust, Sr20 style Reply to Thread
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Topic Review (Newest First)
09-20-2007 08:16 PM
Palmer I should do that to my 83.
09-20-2007 07:48 PM
bsuarmy
Quote:
Originally Posted by GripenTek9000 View Post
I've seen those hood stack on a lot of demo derby cars around here
thats what the picture is from.
09-20-2007 11:06 AM
GripenTek9000 I've seen those hood stack on a lot of demo derby cars around here
09-20-2007 11:02 AM
codesplice
Quote:
Originally Posted by bsuarmy View Post


through the hood stacks...turbo spooled with hopes and dreams. 80 psi agressive tune!

That'll probably put you in the back of your seat. Can anyone confirm?
09-20-2007 10:58 AM
bsuarmy

through the hood stacks...turbo spooled with hopes and dreams. 80 psi agressive tune!
09-20-2007 10:53 AM
codesplice
Quote:
Originally Posted by prophet View Post
screw side pipes. open headers.
And then you spool the turbo with hopes and dreams?
09-20-2007 10:27 AM
prophet screw side pipes. open headers.
09-20-2007 10:14 AM
Drew in Houston Side pipes!
09-20-2007 10:13 AM
Powar
Quote:
Originally Posted by CooperS7777 View Post
That wont pass inspection in most states. It might even be federal that the exhaust has to dump past the rear most operable window.
That isn't a concern for us here in KY.
09-20-2007 08:02 AM
codesplice
Quote:
Originally Posted by CooperS7777 View Post
That wont pass inspection in most states. It might even be federal that the exhaust has to dump past the rear most operable window.
It'll fly in Alabama :lendostar:
09-20-2007 07:58 AM
CooperS7777
Quote:
Originally Posted by fieldsc View Post
make the exhaust terminate on the side between the front and rear doors, sort of like cobras..
That wont pass inspection in most states. It might even be federal that the exhaust has to dump past the rear most operable window.
09-20-2007 07:56 AM
codesplice
Quote:
Originally Posted by fieldsc View Post
make the exhaust terminate on the side between the front and rear doors, sort of like cobras..
Cool idea.... but you'd still have it hanging 4" below the rest of the car.
09-20-2007 07:51 AM
fieldsc make the exhaust terminate on the side between the front and rear doors, sort of like cobras..
09-20-2007 07:46 AM
JK I doubt the gas tank would be an issue, the exhaust already runs very close to it, and the OEM heat shield makes things fine.

But as others suggested, this is not going to work well any time you are on a road that is not flat. Any time you straddle any sort of hump you're going to get massive dragging problems, possibly crushing the exhaust INTO your tank

Also, keep in mind that there are 500+ hp ng900/9-3s running around with the exhaust running in the stock location. The gains probably don't outweight the bennefits.

Now, that said, go try it and report back!
09-20-2007 07:43 AM
CooperS7777 If you still have your plastic mid mount mud flaps - you allready know how much those rub Im sure. A full 3" exhaust outside of the channel will sit as low if not lower than those do.

I doubt however that the tank would melt from the exhaust heat - Im sure it has quite a high melt/flash point being a gas tank and exhaust temps that far back are pretty low.
09-20-2007 05:32 AM
liketheword The plastic gas tank is more likely to melt due to the heat. Plus the ground clearance would be a another big concern as mentioned.
09-20-2007 04:17 AM
codesplice ^^^

Yeah... unless you're gonna lift your car four inches before you do this (do it! hella rally stylez!), hanging a 3" pipe underneath the car will cause all sorts of clearance issues.
09-20-2007 04:11 AM
NickTurbo900
Quote:
Originally Posted by frostycrowd View Post
Anyone try this or see any problems with this? Will like input before I go lay down some moneys.
I think your ground clearance will be 4 inches lower than the lowest spot on your gas tank if you do that. Take a tape measure and get under your car and look at what this means.

I would doubt the bends in the stock exhaust system pose any restriction whatsoever if you are using a 3" system.
09-19-2007 09:56 PM
laxian55 That will hang down even lower off the bottom of the car, there is an indentation in the floor boards for your stock exhaust, and we all run 3" without a problem.
09-19-2007 09:36 PM
Palmer Wrap that shit, dog.


Good luck, and take pictures!


I would also like to point out that the 9-3 (along with most new cars) has a plastic gas tank.


Be safe.
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