4 inch or 5 inch straight pipe - Ford Powerstroke Diesel Forum

 
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post #1 of 10 Old 08-12-2013, 05:15 PM Thread Starter
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4 inch or 5 inch straight pipe

I have a 99 7.3 and am looking to straight pipe it, im wondering the diffrence between a 4 inch and 5 inch straight pipe, i want it to be loud but still sound good. Also can anyone recommend me a kit for it? Thanks
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post #2 of 10 Old 08-12-2013, 05:47 PM
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4" is all you need

--Uriah--
2001 F350 XLT (POWER SEATS!!) 7.3 PSD ECLB SRW automatic, 153,000(ish)
WIX 6637
4in. turbo back straight pipe 5in. tip
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post #3 of 10 Old 08-12-2013, 08:01 PM
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^^^^what he said. Put a 5" tip on it

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post #4 of 10 Old 08-12-2013, 08:07 PM
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^^^^ what he said lol. I got one on mine and it'll sound really good

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--Uriah--
2001 F350 XLT (POWER SEATS!!) 7.3 PSD ECLB SRW automatic, 153,000(ish)
WIX 6637
4in. turbo back straight pipe 5in. tip
Zoodad
ATS turbo shroud
6pos TS chip
ISSPRO Gauges (EGT, Trans, Boost)
Foil delete
$.50 MOD
To come soon: EBPV delete, new steering gear box/ pump
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post #5 of 10 Old 08-12-2013, 08:08 PM
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Plus MBRP is quite reliable. Make sure you get a 4" downpipe too

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--Uriah--
2001 F350 XLT (POWER SEATS!!) 7.3 PSD ECLB SRW automatic, 153,000(ish)
WIX 6637
4in. turbo back straight pipe 5in. tip
Zoodad
ATS turbo shroud
6pos TS chip
ISSPRO Gauges (EGT, Trans, Boost)
Foil delete
$.50 MOD
To come soon: EBPV delete, new steering gear box/ pump
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post #6 of 10 Old 08-13-2013, 03:36 PM
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http://www.xtremediesel.com/MBRP4PLM...mS6200PLM.aspx

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post #7 of 10 Old 08-13-2013, 06:00 PM
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5" sounds better in my opinion though, and looks cooler

Charlie
2003 F250 CCSB 7.3--Gearhead tuned, MBRP 5", 6637, Diesel Site Coolant Filter, 203* Thermostat, ISSPROs, HPx, 5% tint


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post #8 of 10 Old 09-01-2013, 08:05 PM
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I have 5" straight... the choppy reverb is awesome! Turns a lot of heads... lose a tad bit on the bottom end but makes up for on the top.

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post #9 of 10 Old 09-03-2013, 05:54 PM
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I've got the 5", my buddy has the 4". I prefer the 5" as I like being the loudest diesel on the block, but only for that reason.

2001 F-350 CC Lariat 7.3
-Superchips Flashpaq
-5" MBRP Turbo Back
- Pro Comp 4" lifts
- Method Standard wheels 16"
- Toyo mud terrains 35"
-Work in progress

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post #10 of 10 Old 09-03-2013, 07:02 PM
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5in is just a deeper louder sound then the 4in. Personaly you better off buing the pipe and making it your self and have a side dump infront of the wheel cuz its way cheaper and only kills a few hours

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