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Old 04-10-2012, 10:07 PM
Kentstang66
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6.0 exhaust and mpg question

Hey I just bought an 05 f250 and am looking at doing a muffler delete Saturday to improve fuel mileage. Should I just go ahead and remove the cat also to improve the mpg or will I not gain by taking both out. Thanks for any input I'll post pictures later.
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Old 04-11-2012, 02:17 AM
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Re: 6.0 exhaust and mpg question

I removed both. Idk what gains if any by removing the cat. But really opens it up. I'm running a 2005 250 as well with 4" straight and AFE stage 2 with 6 inch lift and 35s and I'm seeing 16mpg on high way. Hand calculated
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Old 04-11-2012, 02:17 AM
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Re: 6.0 exhaust and mpg question

So couldn't hurt to do both if your state allows it
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Old 04-11-2012, 02:43 AM
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Re: 6.0 exhaust and mpg question

Don't expect a noticeable difference. Less than 1 mpg, and that's if you're lucky. It sure does sound good though.
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2007 F-250 CCLB Lariat FX4 6.0L

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I just blow my heads off the block once a year. Keeps nice clean antifreeze in it, although not that cost effective it sure is fun.
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Old 04-11-2012, 09:46 AM
Kentstang66
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Re: 6.0 exhaust and mpg question

Would you think opening up the exhaust would hurt how many miles I can expect to get out of the truck. Mine just has the stock 3.5" pipe
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