Straight Pipe Question - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 03-25-2007, 05:18 PM Thread Starter
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Straight Pipe Question

i have a 1995 f-250 powerstroke. it's chipped and lots of other mods, i just got it and i took the muffler off, but the cat is still there, i am going to take that out to but was wondering if it is a bad idea? it wont hurt the truck or anything will it? will it even make a difference in the noise? just wondering because i am new to diesels. Also, the chip it has causes it to shift at almost and sometimes more then 3000rpm's. i dont think this is good. it had a banks shift kit on it and we unhooked it thinking it would help but it didnt, can anyone tell me if this is normal with chips and maybe if my transmission will be ok? well thanks for helping me out!
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post #2 of 8 Old 03-25-2007, 05:22 PM
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If you run a strait pipe in stock diameter it can be a little "raspy" sounding, but if you do a 4" turbo back, it sounds good, a little turbo whine at idle, and really doesnt get loud untill your on the throttle hard!
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post #3 of 8 Old 03-25-2007, 05:27 PM Thread Starter
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well it has a 3 1/2 inch pipe, 3 inch downpipe
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post #4 of 8 Old 03-25-2007, 05:31 PM
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Ya, thats stock, it wont hurt anything, just sounds a little different.
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post #5 of 8 Old 03-25-2007, 07:49 PM
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You will notice that your turbo will spool much quicker.

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10k mod
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post #6 of 8 Old 03-26-2007, 08:48 AM
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3" dp is not stock and i think stock pipe is 3"

1997 Ford F350 Crew Cab, Long Box, 7.3L Powerstroke, E40D Automatic, ATS 5 Star Converter, ATS Deep Trans Pan, DIY Intake, Straight Exhaust, 4x4, SRW, 3:55 Rear End, Cab Lights, Lighted Grab Handles, Delta Champion Low Profile Tool Box, Dee Zee Box Caps, Homemade Drill Stem Rear Bumper.
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post #7 of 8 Old 03-26-2007, 09:07 PM
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3.5" is stock diameter cat pipe... so YES, his is stock diameter

As far as the Banks "shift kit", do you mean a TransCommand? It will hold a gear for a while depending on load and throttle position. It was the single BEST thing I did for the trans on my old truck. Helped it last 9 years.

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post #8 of 8 Old 03-28-2007, 05:29 PM Thread Starter
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i did it, and it sounds great, can really hear that turbo too, and lots of black smoke!
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