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Old 08-15-2013, 10:13 AM
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7.3 Exhaust Help

I am planning on making my own exhaust.

I will be buying a 4" downpipe. From there I want to do 4" straight pipe back to a 4" y-pipe I just bought.
Now my question, from the Y-pipe should I do 90* and straight out to the sides, or 45* and go out at an angle to the sides.

I plan on dumping the exhaust in front of the wheels. Also don't plan on running it all the way to the edge, stop like 6" under the body.


I know the 90* will cause more backpressure, but I doubt it will make any huge difference. At this point, I would like it to sound good.

Really I am not sure if either way will net any difference in power or sound.
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Old 08-15-2013, 11:41 AM
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Sounds like your aiming for what I've done. I need to bump my entire system to 4" but I have a 90 that turns into a 4" Y pipe that comes out in front of the rear wheel with 2 4" tips. I figure I'll revamp the whole thing and go 4" turbo-back to 6" tips someday.

I love the look. Nobody has dual pipes dumped in front of the rear tire.


Here's a photo that was readily available: http://i1296.photobucket.com/albums/...psc67a601b.jpg

Last edited by AgTires4295; 08-15-2013 at 11:47 AM.
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Old 08-15-2013, 12:06 PM
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you are doing the same side, I was thinking about doing both sides, one out each.

I like the way yours look. I don't have a lift or anything on my little red truck.

Last edited by zillafreak; 08-15-2013 at 12:10 PM.
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Old 08-15-2013, 12:19 PM
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That might be difficult crossing the driveline and dumping under the fuel tank.
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Old 08-15-2013, 12:42 PM
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Ya, kind of what I was wondered about. Guess I will check it out and see what I can find.
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