7.3 Exhaust Help - Ford Powerstroke Diesel Forum
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post #1 of 5 Old 08-15-2013, 10:13 AM Thread Starter
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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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post #2 of 5 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


2001 7.3L
Pro Comp 6.5" Lift
Pro Comp 16x10 Alloys
35x12.5 Nitto Mud Grapplers
Sky Jacker Hydro 7000 Steering Stabilizers
K&N CAI JUNKED For A 6637
Straight Piped Dual 4"
Jasper 4R100 (Rebuilt in '05)
Tru-Cool Max
Dieselsite Coolant/Trans Filters
ISSPRO EV2 (Boost, EGT, Trans)
Centramatics
EBPV Switch
'07 Headlight Conversion
Foil Delete
Zoodad
Monitoring with Torque

Last edited by AgTires4295; 08-15-2013 at 11:47 AM.
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post #3 of 5 Old 08-15-2013, 12:06 PM Thread Starter
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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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post #4 of 5 Old 08-15-2013, 12:19 PM
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That might be difficult crossing the driveline and dumping under the fuel tank.


2001 7.3L
Pro Comp 6.5" Lift
Pro Comp 16x10 Alloys
35x12.5 Nitto Mud Grapplers
Sky Jacker Hydro 7000 Steering Stabilizers
K&N CAI JUNKED For A 6637
Straight Piped Dual 4"
Jasper 4R100 (Rebuilt in '05)
Tru-Cool Max
Dieselsite Coolant/Trans Filters
ISSPRO EV2 (Boost, EGT, Trans)
Centramatics
EBPV Switch
'07 Headlight Conversion
Foil Delete
Zoodad
Monitoring with Torque
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post #5 of 5 Old 08-15-2013, 12:42 PM Thread Starter
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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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