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Potential performance gains by changing my exhaust?

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Old 07-15-2010, 11:51 AM
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Default Potential performance gains by changing my exhaust?

Hello,

So I am thinking of changing my exhaust. I currently have V&H side shots, no baffles. When I had my motor work done, 95", intake, Andrews cams (34g's I think) put in, I was DYNO'D 89tq and 98hp.

I was wondering what exhaust you would recommend and what it would do to my numbers by changing it to something different...
 
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Old 07-15-2010, 12:31 PM
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Depends on what kind of exhaust you're putting on. Do you have one in mind?

A baffled exhaust will produce much better tq numbers than any non-baffled exhaust.
 
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Old 07-15-2010, 12:36 PM
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Well, that's up in the air, hence the "what would you recommend" part. Really, I'm open to all suggestions. Wondering what kind of gains I could expect by goin with something different. Perhaps a 2-1 of some sort...for example...
 
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Old 07-15-2010, 12:53 PM
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I had Sideshots w/BCT QQ baffles and changed to a Supermeg 20 disc closed, the power came on sooner and felt better but my numbers came in down 7hp/2tq overall, it might have been because it was a different dyno and operator, I ended up going with 14 open and it feels a lot better, it's too hot out for me to dyno again so I don't have any numbers.
 
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Old 07-15-2010, 12:58 PM
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Interesting...i was under the impression that the 2-1 would improve both numbers, but maybe i am mistaken...
 
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Old 07-15-2010, 01:00 PM
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D&D fatcat 2 into 1. I'll bet you get at least another 5 hp and TQ, but most likely a bit more. A longer exhaust allows more scavenging of teh exhaust gasses, and a 2 into will really boost the power. Other good 2 into 1 options are Thunderheader, V&H, BUB, etc. Let me know if you want discounted forum pricing.

Thanks!

Drew
 
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Old 07-15-2010, 02:00 PM
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Originally Posted by FATCAT_01
Interesting...i was under the impression that the 2-1 would improve both numbers, but maybe i am mistaken...
I think the closed cap was hurting my numbers in the upper R's and it did feel better down low. It feels right now with 14 disc open. I did have decent baffles to start with so you should see more of an increase.
 
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Old 07-15-2010, 02:03 PM
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Yeah, I would assume so also. I have installed power cones at the head, but can't get baffles in the pipes any longer....the bottom one tends to drag a bit...
 
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