muffler 2 b or not 2 b - Ford Powerstroke Diesel Forum
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Old 06-21-2006, 04:54 AM
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muffler 2 b or not 2 b

New feller here, I would like to add a 4" (409) torbo back system heard you need backpressure from the muffler or could I go straight. Could someone set the record straight
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Old 06-21-2006, 05:18 AM
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what kind of truck is it going on?

welcome to the forum.
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Old 06-21-2006, 06:16 AM
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Quote:
Originally Posted by mcreacy
New feller here, I would like to add a 4" (409) torbo back system heard you need backpressure from the muffler or could I go straight. Could someone set the record straight
if your truck is a 6.0, some backpressure actually helps the EGR system operate, this is something we are just learning with the new calibration...

If its a 7.3, It doesnt really matter, so you can run it completely strait with no worries........Marc
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Old 06-21-2006, 06:41 AM
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WELCOME!!!!!!!

Which year/setup do you have???
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Old 06-21-2006, 07:02 AM
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sorry it's a '03 f350 7.3 cc 4x4
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Old 06-21-2006, 08:59 AM
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Straight pipe it. Talk to us with your diesel questions. We'll set you straight...literally! Guys who know nothing about diesel tend to think that the same principles with gas engines go with diesel. They still think they have spark plugs for goodness sakes!
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Old 06-21-2006, 09:30 AM
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thanks for the info, i'm trying to improve my 14 mpg (driving like grandma). I think my 35's don't help any. What else can I do tp improve the mpg.
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Old 06-21-2006, 09:40 AM
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a little more air....a good intake with a prefilter if it's a real high flowing one....a chip helps too, 35's don't...lol
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Old 06-21-2006, 01:26 PM
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I say get an aftermarket high flow muffler.........why you ask?........a straight piped PSD drives me up the wall. Cain't describe the sound without looking/sounding like an idiot....lol......but it just makes me want to go nuts.
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Old 06-21-2006, 08:50 PM
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The 7.3's aren't too bad, but the 6.0's sound better with a muffler I think.
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