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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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Old 06-06-2009, 10:18 PM   #1
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New Exhaust

I spent most of today making a new exhaust for my 900. Got through the midpipe done:








It's 3" aluminized, all vband connections, with a straight through magnaflow muffler. I may add a second one later, depending on how loud it is. Only things I would do differently are a) stainless b) shorter radius bends for the downpipe. The bends I have are 6" radius, 3" or 4" would have made it easier. Oh well.
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Old 06-06-2009, 10:24 PM   #2
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Well done!

So you only putting in a mid muffler? None in the rear?
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Old 06-06-2009, 10:35 PM   #3
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correct, just the mid muffler to start. if i decide i want it quieter, i'll do a rear one as well

the reason for this being it's much easier to add a muffler to the end than it is the middle
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Old 06-06-2009, 10:58 PM   #4
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what size muffler is that?

I have a magnaflow 5X8X18 in the rear, no cat, no mid-muffler, I find it to be quiet enough at idle/cruise, but quite pleasant at wot.

i'm curious to hear how it sounds.
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Old 06-06-2009, 11:01 PM   #5
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Quote:
Originally Posted by Castor Troy View Post
the reason for this being it's much easier to add a muffler to the end than it is the middle
Ahhh. Good call.

If you had to guess, how much money in materials do you think it's going to take?
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Old 06-06-2009, 11:56 PM   #6
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this is the magnaflow 4x9x14. it fits perfectly in the center muffler spot

i've got about $360 into it, including the muffler, vband clamps, 3" adapter from GS, replacement rubber hangers, and a 2 pound spool of welding wire
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Old 06-07-2009, 01:47 AM   #7
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good deal, $360 isnt bad
did you price out stainless?
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Old 06-07-2009, 01:51 AM   #8
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stainless isnt really any more expensive than aluminized but iirc it would cost about $100 more for the trimix gas to properly weld the stainless
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Old 06-07-2009, 01:59 AM   #9
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sleep much?

ahh I see- you can use that gas on regular steel, correct??



where did you source your v-bands?
I want to put those on my jt to replace the slip joints that leak like all hell
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Old 06-07-2009, 02:08 AM   #10
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i didnt do the welding, a friend did.

i believe he either uses CO2 or NO2 (i dont remember which) for welding regular steel, which is super cheap. the trimix could be used on regular steel, but would be a complete waste of money.

i got the vbands from GS (they arent in the catalog, but sell them @ 30/piece iirc)
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Old 06-07-2009, 06:36 PM   #11
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stainless isnt really any more expensive than aluminized but iirc it would cost about $100 more for the trimix gas to properly weld the stainless
Who are you buying your gas from? The trimix shouldn't be that much more expensive than 75/25
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Old 06-07-2009, 10:12 PM   #12
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We used a 3" stainless U bend and 3" 90 degree bend for my downpipe. Not even that, they got chopped up so there are several small pieces that would surely come in handy if I were going further back.

Those two pieces alone were $25 & $12.

I bet the muffler is what cost you the most out of your whole exhaust, very nice
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Old 06-09-2009, 07:21 AM   #13
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pictured is pete's (the welder's) 95 900se, not mine
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Old 06-09-2009, 08:10 AM   #14
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looking nice!
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Old 06-09-2009, 08:28 AM   #15
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this is what i want to for mine. just need to find a welding shop... $400 for a full new exhaust is really decent. plus you made it how you wanted it.

very nice..
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