straight pipe all the way
Best downpipe back system,,,,
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Lead Driver
Joined: Jun 2006
Posts: 5,675
Likes: 996
From: Near Yosemite CA
Best downpipe back system,,,,
Howdo all, I bought a 96 F-350 4x/CC/7.3/ZF 5sp it has 85k on it, and the previous owner had a BD exhaust brake and a GearVendors OD put on and also a 70 hp chip and a new down pipe. He however, didn't change the REST of the exhaust,,, so I am looking to remove the cat and everything else from the downpipe back. Any suggestions?!?!? I have straight-piped my Excursion w/the 7.3, am I looking at about the same note coming out the end?!! I love the sound of my Ex,,,,
I called DPP and they only have the whole system with downpipes, I don't need another downpipe... does anyone make a bolt on from right in front of the cat back?!?!
Thanks
Joe
I called DPP and they only have the whole system with downpipes, I don't need another downpipe... does anyone make a bolt on from right in front of the cat back?!?!
Thanks
Joe
Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
Can't think of any off the top of my head... I made my own dual side exit exhaust completely straight piped. It should sound about the same as your Ex but maybe a little louder in the cab.
I'm sure someone will chime in here soon. Good luck with the truck.
Semper Fi
I'm sure someone will chime in here soon. Good luck with the truck.
Semper Fi
Senior User
Joined: Dec 2007
Posts: 452
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From: Lizton, IN
I went with magnaflow. they have a kit going from the DP.
It soundes good, a deep rumble instead of the turbo sound. The kit came with an extra 3-4' piece of 4" in case you have an extended or crew cab. I ended up swapping out the muffler with the 4" extension for a straigt thru sound.
...and I just re-read that you have CC so this wouldn't work in your case
It soundes good, a deep rumble instead of the turbo sound. The kit came with an extra 3-4' piece of 4" in case you have an extended or crew cab. I ended up swapping out the muffler with the 4" extension for a straigt thru sound.
...and I just re-read that you have CC so this wouldn't work in your case
Thread Starter
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Lead Driver
Joined: Jun 2006
Posts: 5,675
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From: Near Yosemite CA
Well, for now I just straight-piped it all the way out!!! I love it, almost sounds better than my Excursion, maybe because the pipe is longer,,, glad I did it!! And I do notice a slight difference going up the hills,,, not a huge amount, but definatly noticable!
Elder User
Joined: Jan 2009
Posts: 696
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From: Melissa TX
when everyone says straight pipe, does that mean no cats and no muffler? sorry kinda new to mods on the diesels.
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Senior User
Joined: Dec 2007
Posts: 452
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From: Lizton, IN
Yep. That's right nothing but pipe. You'll be surprised how quiet is is. It's not like a straight pipes on a gasser. The turbo does a great job muffling the exhaust sound.
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Elder User
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From: Melissa TX
do you get much power from doing that?
Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
You might notice that the turbo spools a little quicker and you'll hear the turbo more. Maybe feel a slight power gain.
Hotshot
Joined: Jul 2008
Posts: 11,231
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From: Thomasville, GA
store.airflo.com has lots of pipe including some stuff for powerstrokes like muffler deletes and such.
Senior User
Joined: Dec 2007
Posts: 452
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From: Lizton, IN
Like what brown falcon said. It seems to allow the turbo to spool quicker. I'm sure there's some gain, but the sound is what your really going to notice.
I would seriously consider doing this yourself. A muffler shop will charge a lot for simply running pipe. And like what others have said, they may not do it at all if u want the cat removed.
Hotshot
Joined: Jul 2008
Posts: 11,231
Likes: 130
From: Thomasville, GA
The best and cheapest way to do it would be buy the pipe and any adapters/elbows you need, mock it up on the truck and either mark it or tack it in place, and then have someone at a exhaust shop or a buddy who's good at welding actually weld it all.