CAT & Muffler Delete. - Ford Powerstroke Diesel Forum
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Old 02-03-2008, 07:12 AM
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CAT & Muffler Delete.

How loud would it be if I cut off the cat & muffler of 95' Stroke. What would I benefit from it?

Need some info guys.
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Old 02-03-2008, 07:20 AM
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should not be that loud unless you do alot of towing, should also lower egts also. my truck has cat/muff delete and it rocks!!!! she runs like a banshee now!!!!!
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Old 02-03-2008, 07:23 AM
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I gutted my cat and have no muffler going straight into 5" stacks and their not loud at all. Coupled with an intake a straight exhaust would help the truck breathe better and lower EGT's.
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Old 02-03-2008, 07:33 AM
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A 7.3 sounds sweet with a straight pipe! They aren't that awful loud. The 6.0 is a little more radical with it's higher rpms and VGT turbo but you should be fine. The only time that I consider my 6.0 to be annoying is when towing something heavy. Heavy loads seem to keep the truck in the sweet spot as far as rpms goes and that is where it really barks.
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Old 02-03-2008, 08:03 AM
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I have mine straight piped and I love it. I have gotten several compliments on the way it sounds. About 2500RPM with a load and she really talks to ya. I can't vouch for the lower EGT's since I do not have gauges yet, but it definately helps throttle response and it seems to spool a littel quicker
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Old 02-04-2008, 01:06 PM
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Hi, When you say straight piped are you including the downpipe also? I have a 97 7.3 and wondering if I could just leave the flat downpipe and go with a straight cat and muff. delete. and still get some turbo whistle? Thanks in advance.
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Old 02-04-2008, 01:49 PM
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Straight piped usually means no cat no muffler. You could keep that restrictive flat downpipe on but you would be better off with a 3" downpipe it's so much better.
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Old 02-04-2008, 04:21 PM
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Triflex:

Yeah u can hear the turbo whistle pretty loud with the stock downpipe, and straight piped exhaust. I would jut do a cat delete, seeing the muffler is straight through anyway. But at idle u can hear it whistling cuz my dads is straight-piped, especially loud when ur pulling away at low rpms.

Sounds sweeter when u ae near a concrete barrier like on a bridge, cause of the echo! lol

She should whisle way louder with a downpipe and intake though right guys?
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Old 02-04-2008, 06:54 PM
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I tow a 44 foot 5'er and the only time i notice it being loud is when i get something is on my right to reflect the sound off of.
Git rid of the flat stock down pipe, its a bit of a pain to remove but well worth it. A sawz-all makes it easier if you don't nick the valve cover
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