my DIY inatke seems no different from inside the cab... - Ford Powerstroke Diesel Forum
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post #1 of 24 Old 02-21-2008, 05:25 PM Thread Starter
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Red face my DIY inatke seems no different from inside the cab...

So me and my dad installed the DIY intake on my '95 PSD. The filter is humongous!. anyway, we used a 45* pvc elbow (for now), which has an outer diameter of 4" and there is probably 3.5" clearance on the inside. I was anxious to take it down the road to see if it sounded like a vacuum under the hood (like i've heard), but it sounded no different.

Everyone said the turbo would be louder from inside the cab, but like i said i really cant tell a difference. Sonce my truck has stock exhaust, would that be the reason it isnt as loud, or did someone lie to me about the noise level???



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post #2 of 24 Old 02-21-2008, 05:29 PM
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some one should be along that can help you out

january 2003 6.0 F-350 Lariat 4x4 cc with 08 long bed. recon cab and mirror lenses, torqueshift(reman on 9-03-09) with three disc billet convertor(500 rpm lowered stall speed),mag-hytec deep tranny pan,, 8" fabtech lift w/ 37" iroc super swampers on helos,pro comp ladder bars, custom sct x3 with tunes by eric @ innovative diesel, boost and pyro,edge insight, afe, 4" straight piped, ARP headstuds, banks intercooler & high ram intake. engine mods & maintenance by first coast diesel performance.
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post #3 of 24 Old 02-21-2008, 05:39 PM
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You will get more turbo sound with straight pipe exhaust and lot better performance, that is when I really started to here the turbo under the hood is when I went straight pipe. Oh and you can really hear it out the tailpipe.

2001 F-250 7.3L
6-speed manual trans.
D.I.Y. Intake
3.5" straight pipe exhaust
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post #4 of 24 Old 02-21-2008, 05:50 PM Thread Starter
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anymore comments?

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post #5 of 24 Old 02-21-2008, 05:57 PM
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Did you roll your window down...? It should be louder out of the hood for sure.

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post #6 of 24 Old 02-21-2008, 06:02 PM
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but then again I did AFE... but the sound out of the PG7 and Napa should, I would think, be the same.

An OBS Napa guy should come along soon.

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post #7 of 24 Old 02-21-2008, 06:21 PM
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You might hear a little louder turbo noise from the filter but the real sound comes from the doing an open exhaust from the turbo back. I have an open exhaust from the turbo and piped the exhaust out the pass. side of the truck to just in front of the rear tire. Loud, but not to bad.
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post #8 of 24 Old 02-21-2008, 06:34 PM
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straight pipe and delete the foil from the lower intake for more sound.

late 99 f250 7.3L 265k
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post #9 of 24 Old 02-22-2008, 03:32 AM
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Have you changed the down pipe? It will not sing well with the stock down pipe.

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post #10 of 24 Old 02-22-2008, 04:30 AM
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When i did mine,(d.y.i. Intake), I couldnt tell any difference in sound either. Just by looking at the set up, you know it flows better, and thats what its intended purpose.
Even with everything stock. I dont know if you could really hear the intake sucking air over all the rattles and such in the 7.3.

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