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Old Apr 5, 2007 | 04:10 PM
  #21  
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well i have a 40 series Flowmaster and i have no cas, am i still going to gain or lose?
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Old Apr 5, 2007 | 04:55 PM
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That backpressure myth is BS. Show me one LS1 car that doesn't benefit from a more free-flowing exhaust.

And there's no set amount for gains from a cutout. It depends on how much exhaust your car is making, and how restrictive your exhaust is behind the cutout. MoeZ28's car picked up like 20+hp from opening his cutout on the dyno. But it's a head/cam Trex car with a 90/90. You won't be moving so much air.
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Old Apr 5, 2007 | 06:09 PM
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ok so grand verdict says im not going to lose any horse? i dont want to tottally screw my exhaust up with no cats and having cutouts
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Old Apr 5, 2007 | 06:41 PM
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Originally Posted by 1meantransam
ok so grand verdict says im not going to lose any horse? i dont want to tottally screw my exhaust up with no cats and having cutouts
you'll always gain at the track from having it open. and it'd be miserable to drive with it open all the time 'cause it's too loud and sounds like crap.
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Old Apr 5, 2007 | 07:00 PM
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i like the way they sound though, i like loud... some like stock quiet and some like drag roar im more toawards the roar
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Old Apr 5, 2007 | 10:08 PM
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Originally Posted by Intragration
I wonder if there would be a big difference between dumping it before the axle, and after the axle right before the muffler. I looked at the writeup on that today, and the one right before the muffler looked pretty nice, I like the thought of having it exit near the rear of the car too, as opposed to right in the middle.
That is where I have mine, and it is a-lot nicer having all the noise and fumes at the rear of the car where they belong.
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Old Apr 5, 2007 | 10:10 PM
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Don't put it too far back. You don't want to defeat the purpose.
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Old Apr 5, 2007 | 10:38 PM
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Originally Posted by N4cer
Don't put it too far back. You don't want to defeat the purpose.
There's a writeup on the site with a picture of the cutout coming out right before the muffler. It only goes an extra four feet, but it does have to go through the over-the-axle pipe. It sure is nice to have it dumping to the rear though. Has anyone tried both ways to compare results? There can't be that much difference.
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Old Apr 6, 2007 | 08:24 AM
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It comes out at the same position as the borla cat-back. I don't think it being there is going to hurt anything. The only way I can see a cutout being less effective is if it is installed after the muffler, lol.
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Old Apr 6, 2007 | 08:26 AM
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Originally Posted by Intragration
It only goes an extra four feet
It's actually about two and a half. ( from the last bend before the axle to the bend before the muffler.)
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