Stacks vs 5" exhaust - Ford Powerstroke Diesel Forum
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Old 10-28-2012, 10:56 AM
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Stacks vs 5" exhaust

Just curious I am wanting to run a new exhaust on my truck. Idk if I want to run 5 " exhaust. Straight piped all the way back. Or to run dual 7" black chrome aussie 4" all the way back to it. I want some input on what people think thanks.


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Old 10-28-2012, 12:44 PM
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Do what makes you happy and what you think looks the best. Doesnt matter what you go with someone will say it looks better another way. With stacks you will loose some bed space so thats your call on that. I went with 5in aussies on my rig and like them alot, and get a few compliments every now and then. Oh and way cheaper to build stacks your self then buy the kit.
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Old 10-28-2012, 01:06 PM
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I'm not worried about losing bed space. And I'm asking preference on loudness. Any performance difference. Just trying to see any difference in between


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Old 10-29-2012, 09:26 AM
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You hear the turbo spool more, performance wise you are really just lowering your EGT's maybe a mile to the gallon better. When I put stacks on mine it quieted it down from how it sounded with the side dump. But sound nice told by my friends i sound like a 18 wheeler going down the road. You might have some drone when you get higher rpm and speeds I dont have any issue with it but some guys get it.
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Old 10-29-2012, 11:01 AM
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The air flow restriction would be that 4" pipe leading from the turbo to your stacks. I couldn't see them being very different if you had 5" turbo back to the rear passenger wheel exit, or 5" turbo back to the stacks. Should be covering a little less distance on the stacks, though, and maybe getting a different sound if you go with that 7" stack from the bed up. I have a toolbox in mine, so I didn't want to use the stacks.
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Old 10-29-2012, 06:38 PM
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I have a 7inch fte mitre stack I like it alot. The sound is not bad at all in the cab for me. Also the turbo does sound louder.
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Old 10-29-2012, 07:25 PM
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Ya...it's that 38r makin all that noise. I want duals so I can share that noise on both sides.
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