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post #1 of 9 Old 07-16-2007, 03:56 AM Thread Starter
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Exhaust Performance

Well my truck had been running rough sometimes so just to be on the safe side I went and put my factory exhaust back on. Man this thing feels like it has more power now with my SCT and factory exhaust. Could it be possible that the straight pipe turned out in front of the rear tire was hurting my perfomance by not having enough backpressure?

Jason
2006 F250 2wd 6.0 psd, 8.96 1/8th mile with canned SCT tunes, now running Spartan Hybrid Race tune! AFE Stage 2 PRO DRY S, 4" turbo back str8 pipe in front of rear tire, auto, crew cab short bed, ZOO DAD mod, 5% tint over the factory tint.
Track Times!
Reaction---.674
60 ft-------1.892
594 ft------8.370
1/8th ET---8.965
1/8th MPH--75.63
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post #2 of 9 Old 07-16-2007, 04:00 AM
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Man Jason - that sucks! Did the stealership ever find anything wrong with it? Or did you just reverse the last change you made???

When I cut my exhaust off of my 7.3 at the DP and drove it for a week like that - it seemed to be sluggish and not as peppy as it was once I got the larger exhaust hung.... course that was all seat of the pants b/c I don't have any guages to verify any hard #'s with.
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post #3 of 9 Old 07-16-2007, 04:08 AM Thread Starter
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Well Brant ever since the morning before I had my exhaust put back on
(knock on wood) my trucl's been doing fine. Hope it doesn't have any more problems. My wifes going to look at a 32' double slide fifth wheel today, if she approves of it and we get it then well see how my trucks gonna run with that thing behind it

Jason
2006 F250 2wd 6.0 psd, 8.96 1/8th mile with canned SCT tunes, now running Spartan Hybrid Race tune! AFE Stage 2 PRO DRY S, 4" turbo back str8 pipe in front of rear tire, auto, crew cab short bed, ZOO DAD mod, 5% tint over the factory tint.
Track Times!
Reaction---.674
60 ft-------1.892
594 ft------8.370
1/8th ET---8.965
1/8th MPH--75.63
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post #4 of 9 Old 07-16-2007, 04:18 AM
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niiice - I guess its a good thing you're sending the decision maker It should do fine! I'll be towing my 22' fifth wheel this weekend for the first time (and my 20' boat behind that). So we'll both see..
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post #5 of 9 Old 07-16-2007, 05:38 AM Thread Starter
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well I'm not really worried about my truck pulling the 5 er, I used to pull my 30' travel trailer with my boat behind it, and it did great. I just hope I don't hook to it and the truck start running rough.

Jason
2006 F250 2wd 6.0 psd, 8.96 1/8th mile with canned SCT tunes, now running Spartan Hybrid Race tune! AFE Stage 2 PRO DRY S, 4" turbo back str8 pipe in front of rear tire, auto, crew cab short bed, ZOO DAD mod, 5% tint over the factory tint.
Track Times!
Reaction---.674
60 ft-------1.892
594 ft------8.370
1/8th ET---8.965
1/8th MPH--75.63
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post #6 of 9 Old 07-16-2007, 05:55 AM
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I have a 39' fifth wheel (17,000 lbs) that my 7.3 hauled fine. I will have the fifth wheel behind my new truck in a week or so. I will let you guys know the differences when I get back.

2006 F250 6.0 Crew Cab King Ranch 4x4
SCT XCAL2
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Kitty ran away
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post #7 of 9 Old 07-16-2007, 05:57 AM Thread Starter
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o.k., sorta getting away from the original topic, EXHAUST???

Jason
2006 F250 2wd 6.0 psd, 8.96 1/8th mile with canned SCT tunes, now running Spartan Hybrid Race tune! AFE Stage 2 PRO DRY S, 4" turbo back str8 pipe in front of rear tire, auto, crew cab short bed, ZOO DAD mod, 5% tint over the factory tint.
Track Times!
Reaction---.674
60 ft-------1.892
594 ft------8.370
1/8th ET---8.965
1/8th MPH--75.63
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post #8 of 9 Old 07-16-2007, 06:03 AM
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from what I have read you do lose some low end horses and torque by going to a straight pipe I dont really know how or why but I have seen that once or twice. Maybe this is what you are feeling if it even is true?

Michael
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2004 CC 6.0 4x4 lariat

MODS:SCT XCAL3, Stacks!, Dfuser coolant filter, 6k HID's, High idle, CCV, Ranch Hand, homefabbed straight pipe, Zoo-dad, 2008 tailights, Isspro Boost gauge, Kenwood head unit, 2 mtx 10's and amp...

FUTURE MODS: Isspro trans EGT and volt gauges, ARP head studs, ???

Parts replaced so far: Oil cooler X2, EGR cooler, ...no more please!
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post #9 of 9 Old 07-16-2007, 07:07 AM
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if you feel its running better with the stocker i would just keep it on.... you could always run a cat and muffler on your other exhaust and see if that helps
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