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post #1 of 5 Old 12-15-2008, 08:09 PM Thread Starter
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delete question..

I've seen 2 recent posts about muffler delete to a straight pipe, also a cat delete.
What advantages are there to these...other than sounding pretty darned cool.

99 F350 Crew Cab Long Box 4X4
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post #2 of 5 Old 12-15-2008, 08:19 PM
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It'll let your exhaust flow better (lower EGT's) CAT and muffler (especially stock) are big restrictions in the exhaust.




Oh,,.... and it'll sound a heck of a lot better too

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post #3 of 5 Old 12-16-2008, 01:46 AM
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Quote:
Originally Posted by 07OUTLAW View Post
It'll let your exhaust flow better (lower EGT's) CAT and muffler (especially stock) are big restrictions in the exhaust.




Oh,,.... and it'll sound a heck of a lot better too
Exactly right. And by sounds better it sounds MEAN. You'll be glad you did it.

Old Truck: 00 F350 XLT DRW: basic first few mods. S&B, 4" straight pipe, gauges, CCV, EBPV and Wastegate line deletes, LED Sills, sweet custom headlights, smoked cab lights, Ventshades, Tint.
Traded in at 196k miles.

"Brand Newish" Truck: 02 Chevy S10 2.2L 5sp. Reg cab 4x2. Badass custom made shifter, foglights, 20% tint, AVS Vent-shades, Stock Intake mods, Electric Fan conversion .
~ 95k miles.
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post #4 of 5 Old 12-16-2008, 02:46 AM
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As already said it removes the restriction in the exhaust and allows the truck to breathe. A diesel engine needs to breathe and why Ferd necked down a 3.5" exhaust to a 2.5" muffler I have no idea. I f you remove the CAT I would hang onto it. It is just a matter of time before they will require emissions on diesels, just watch CA. and all the other states will follow!! The first part of the test is a visual inspection, if it came from the factory with a CAT, there better be one on there, and they ain't cheap!! I prefer a full flow muffler like the Walker BTM, this way you have the same free flow, but compliant for having a muffler and it still sounds good.

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post #5 of 5 Old 12-16-2008, 07:30 AM
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If you're lucky enough to have the sticker under the hood that says no cat req'd, make sure you dont' remove it, or as NCHORNET said, it may cost you down the road...

Greg

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