OBS 7.3 straight pipe=bad *ss! - Ford Powerstroke Diesel Forum
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post #1 of 24 Old 12-06-2007, 10:05 PM Thread Starter
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OBS 7.3 straight pipe=bad *ss!

ok so basically ive been doing it in stages first obviously i had the factory exhaust on there then i bought the 4'' ss mbrp exhaust which was a mindblowing upgrade (as obs owners know factory exhaust=no turbo noise) and for the longest time i thought about straight piping it and after researching it on here for a while i found out that all 7.3 owners can do it with NO loss of power b/c our turbos are fixed pedistals and that turbo creates so much back pressure that it could in theory only need a downpipe. but everyone else mainly the 6.0 owners have variable vain turbos which run completely diff and need a certain amount of bp to not lose hp and performance. so one day i was curious so i took off the muffler and back . let me tell you it was the most bad *ss raw sound ive heard in my life but unfortunatley i had to put it back bc my dad said the exhaust gasses can cuirculate under the truck and could kill you idk stupid so eventually (now) i got a delete and put it on on monday and its just like i remember im a high schooler and let me tell you drivin down falcon pass every single kid stops and stares! i get thumbs up, and some cover their ears haha so to all obs owners straight piping ur truck is very easy, truck is more responsive, and besides a chip is one of the most "cant take the grin off your face" upgrades!

sorry for the long read i just had to tell yall


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post #2 of 24 Old 12-06-2007, 10:21 PM
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haha you need a chip on that baby! I put mine back to stock so I can sell it and it is SO LAME! with stock tunes.



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post #3 of 24 Old 12-06-2007, 10:32 PM Thread Starter
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oh i see u are a 96er but ya actually the chip was in the works for this christmas BUT back in may i bought a set of 285/75/16 interco super swamper trxus m/t tires (huuuuuge mistake) and here we are in dec and i have under 6k on em and there almost gone! im still steamin about that crap SO instead of a chip and guages i was gonna buy with the help of xmas money i gotta buy a whole new freakin set of tires but yes ive heard our trucks chipped is amazing and hopefully eventually itll happen


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NEW TRUCK
-Dakotah 2000 Patriot Blue Dodge 2500 Auto 24v Cummins 4x4 578HP/991TQ
7" Black Cat, BHAF, FASS 150, Built Trans, BW 66/74/14, DDP 7x12s, ARP Studs, TST COMP, EJWA CTS,
3'' Lift, 35'' BFGs, 16x9 Black Moto Metals, Smoked Out LEDs, 6k HIDs, Ranch Hands, ect.
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post #4 of 24 Old 12-07-2007, 01:58 AM
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I have over 80% left on my bfg mud terains and ive got over 7k miles on them. our trucks arent really amazing with a chip. just a heck of alot better than stock they get really fun once you start playin with injectors.



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post #5 of 24 Old 12-07-2007, 05:46 AM
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Good deal man!! Did you put a downpipe on it too?? Just wonderin cause i need to do this. LOL

RICK


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97 F350 CREW CAB 4x4, 7.3 TURBO DIESEL, DIY INTAKE , TW TUNES
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post #6 of 24 Old 12-07-2007, 08:03 AM
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For a street tire the Truxus arn't all that great, if your wanting a somewhat aggresive tire I would look at a set of BFG all terrains or mud terrains.

Duane

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post #7 of 24 Old 12-07-2007, 08:41 AM
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i went out and bought mud kings 285-75-16 and i got about 8000 miles on them and they are practically still new and they work pissa in the mud
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post #8 of 24 Old 12-07-2007, 08:42 AM
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Clean truck man..I love it when people star..I wish I had this truck when I was in High school. That must be great!

-Evan

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12.3

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Yeah, but your trucks a freak of nature...
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post #9 of 24 Old 12-07-2007, 02:03 PM
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Quote:
Originally Posted by SMKSTAX View Post
Good deal man!! Did you put a downpipe on it too?? Just wonderin cause i need to do this. LOL
thats where most your power comes from on an obs exhaust upgrade.



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post #10 of 24 Old 12-07-2007, 03:20 PM
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Good deal man!! Did you put a downpipe on it too?? Just wonderin cause i need to do this. LOL
Yes you do, Rick!!!! It's one of the best things you can do to an OBS. It can be a pain, but it's worth it.

Derrick


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'97 F-350 "FORDOR" 4X4 (Dually Conversion, Shackle Reversal, Technicooler , Auto Meter Gauges, 4" DIY Dual Exhaust w/ '08 tips,
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