Do I really need the tailpipe? - Ford Powerstroke Diesel Forum
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Old 02-21-2010, 12:48 PM
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Do I really need the tailpipe?

Getting ready to order my new exhaust system and a thought popped into my head. Why not just put a turn down right after the muffler and delete the tailpipe altogether. Would get rid of a couple of feet of tail pipe and almost all of the bends. Plus, I could probably just order the pieces so that I could mate up to my Banks down pipe and not have to swap that out. Now that I have my brilliant idea....can you more experienced guys give me the reasons it cant be done. There must be something that I am overlooking.
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Old 02-21-2010, 12:55 PM
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Quote:
Originally Posted by NMDually View Post
Getting ready to order my new exhaust system and a thought popped into my head. Why not just put a turn down right after the muffler and delete the tailpipe altogether. Would get rid of a couple of feet of tail pipe and almost all of the bends. Plus, I could probably just order the pieces so that I could mate up to my Banks down pipe and not have to swap that out. Now that I have my brilliant idea....can you more experienced guys give me the reasons it cant be done. There must be something that I am overlooking.
Most state laws say exhaust must exit the rear of the vehicle. The big thing is exhaust gas getting into the cab. You really won't be saving any money. I would go ahead and run the full exhaust.

You won't have any problems while moving. But when you stop in traffic you will start smelling exhaust. Which if you are smelling exhaust you are inhaling carbonmonoxide.
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Old 02-21-2010, 01:05 PM
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See...that is what I am talking about. I knew there would be something. Did not even think about the LAW. I *did* think about the fumes....just figured that the rear axel was fair enough back to not be an issue. Gonna look into the law part just to make sure. You are right that it would not save much money.....would just be a bit different. Like me...short bus different.
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Old 02-21-2010, 01:21 PM
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most say it has to exit behind the passanger compartment which would be the cab so you might be alright there i say go for it if that is what you want
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Old 02-21-2010, 07:58 PM
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i wouldnt worry about the law being a problem since all 4 our duramax dumps have exhausts that dump ot right past the cab from the factory, and some f150s in the early 2000s came with the exhaust right before the rear tire. Just be careful that you dont point it right at the tire or it will heat up. as long as its past any passenger compartment your fine. i was considering doing this on my dually because tailpipe look weird on duallys and they would always melt my mudflaps.
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Old 02-22-2010, 06:06 AM
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I had mine like that before. toght over the axle dump.... looks great and no issues.... not even at idle. it was far enough back
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Old 02-22-2010, 11:06 AM
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my 3.5"side dump

my current 5" side dump
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Old 02-22-2010, 12:18 PM
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im running a open downpipe with no turndown or anything right now LOL. AND my shifter boot is just kinda sitting there not really screwed in either LOL.....its loud

I get NO exhaust in the truck, even when i lift up the shift boot to hear that big 7.3 roar LOL. i have noticed the side of my T-case is starting to turn black though hahahaha
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Old 02-22-2010, 06:26 PM
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The underside of the truck will get coated in soot...
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Old 02-23-2010, 04:07 PM
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Did I read that right? You are planning on replacing your banks dp? Leave that right where it is. Either buy a dp back kit, or go pick up a 3"-4" adapter and 4 feet of 4"pipe and a muffler and clamps. Get a 45 or 90 deg bent 4"piece and there is your system. Shouldn't cost more than 150.
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