Effects of deleting Cat & Muffler - Ford Powerstroke Diesel Forum
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post #1 of 19 Old 08-10-2006, 11:03 AM Thread Starter
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Effects of deleting Cat & Muffler

I was wondering what kind of mileage gains I may see by dropping off the Cat and muffler, and will I lose any power due to no back pressure? Or will that tiny little quench pipe coming off the turbo be enough! Is this going to be rediculously loud? I have a section of 3.5" pipe going in where the cat was, and may just delete the muffler all together.
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post #2 of 19 Old 08-10-2006, 06:23 PM Thread Starter
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Guess I should have looked through the threads first... I pulled the 'Cat and muffler, and put in place a 4' section of 3.5" tubing and a turn-out, MAN!! That sounds great. The Turbo really takes off now, and the get up and go is wonderful. I gotta get the 3" down pipe. Anyone got one they wanna get rid of? Have a Great day!
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post #3 of 19 Old 08-10-2006, 06:33 PM
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good to hear man. your mileage will probably go up by one or two miles maybe. i dont know any one with a 3" down pipe for your year. i dont even know if their the same as the SD's or not.

Bill
2000 f-250 4x4 ex cab 7.3 psd. diablo programmer, TS 6 pos. , 4" exhaust turbo back w/ 5" stacks, wicked wheel, HX cross over, zoodad mod, 6637 mod, boost pyro & trany on the a pilliar. 315/75/16 bfg mt's,.superwinch hub's, 6.0 trans cooler, banks trans command. sky jacker leveling kit


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post #4 of 19 Old 08-10-2006, 06:41 PM Thread Starter
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Found one on Ebay for $117, but can't spend that kind of cheddar after putting in a new trans, a 8'x12' flatbed, and a paint-job. Probably wait 'til I get to Fl.
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post #5 of 19 Old 08-10-2006, 06:45 PM
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if your not going to chip it right now you'll be fine. even if you do chip it you should be fine at the lower power levels. your egt's will climb faster and get hotter though. but youll be fine if you dont chip it.

Bill
2000 f-250 4x4 ex cab 7.3 psd. diablo programmer, TS 6 pos. , 4" exhaust turbo back w/ 5" stacks, wicked wheel, HX cross over, zoodad mod, 6637 mod, boost pyro & trany on the a pilliar. 315/75/16 bfg mt's,.superwinch hub's, 6.0 trans cooler, banks trans command. sky jacker leveling kit


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post #6 of 19 Old 08-10-2006, 06:52 PM Thread Starter
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Thanks, I have pretty high miles (308,000) is there any reason to chip a manual truck for towing purposes? My gear ratio is rediculous, I am @ 3000 @ 70mph, and I have a manual, what would the chip do for gas mileage while towing? Or does this only affect the shift points on auto units? Thanks
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post #7 of 19 Old 08-10-2006, 06:58 PM
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the chip would give you a little more torque and horse power but youd still be in the same rpm range. an auto or a stick will benfit from a chip. you should also know if you chip it you need to get at the very least a pyro. mileage would might go up. i dont have a whole lot of expierience with towing+mileage+chip.

Bill
2000 f-250 4x4 ex cab 7.3 psd. diablo programmer, TS 6 pos. , 4" exhaust turbo back w/ 5" stacks, wicked wheel, HX cross over, zoodad mod, 6637 mod, boost pyro & trany on the a pilliar. 315/75/16 bfg mt's,.superwinch hub's, 6.0 trans cooler, banks trans command. sky jacker leveling kit


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post #8 of 19 Old 08-10-2006, 07:17 PM Thread Starter
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Thanks, I will have to dive in a bit deeper I think.......
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post #9 of 19 Old 08-10-2006, 10:06 PM
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As long as your getting a bigger down pipe why not go with a 3 1/2 or 4"?

2000 F-350 Super Duty Crew Cab Short Box
:burnout
6637 mod Intake, TS Performance 6 chip, 4" down pipe to 4" exaust
Autometer Gauges...Tranny, EGT and Boost on the a Pillar

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post #10 of 19 Old 08-11-2006, 09:35 AM Thread Starter
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I've been told the 95 body style requires a bodylift to fit anything over 3", anyone know different?
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