4" or 5" exhaust? - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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post #1 of 4 Old 01-09-2009, 10:33 AM Thread Starter
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4" or 5" exhaust?

What is the difference, and performance gains of both?

I currently have a 4" turbo back on the truck right now, but Im not sure what kind. It had it on there from before I got it.

I work for a machine shop and was thinking of asking them to bend up some 5" stainless...

would it be worth the money for the performance gains, if any at all?

2005 F350 SRW CC LB King Ranch
6" Procomp Lift
37" Mickey Thompson Baja ATZ's
K&N Intake
4" TB Exhaust w/ 6" Tip
Zoodad Mod, High Idle Mod
AutoMeter Ultra Lite Gauges
SCT w/ Innovative tunes



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post #2 of 4 Old 01-09-2009, 10:37 AM
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Sick with the 4in, you would just be pissing away money to replace it with 5in
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post #3 of 4 Old 01-09-2009, 10:43 AM
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Yup, 5" is a waste really. If you need a price on anything let me know.
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post #4 of 4 Old 01-09-2009, 12:10 PM
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Quote:
Originally Posted by baseballguy View Post
would it be worth the money for the performance gains, if any at all?
If your just using exhaust, tuner, and/or intake then it's not going to be worth it to go to a 5in system. In fact, you'll see some low end loss in power unless your pushing more air and fuel.

2006 6.0 King Ranch DRW
Spartan Stage 1 Towing Injectors
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Beta Spartan Phalanx
Suncoast Heavy Duty Torqshift Rebuild
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Straight Piped MBRP 5" Exhaust
64mm Non-VGT turbo
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