G
6.4 Mods
Senior User
Joined: Mar 2011
Posts: 358
Likes: 0
I don't believe that you can 'punch out' the filter on the DPF like the cats on gasers, regardless, the delete kit for the dpf only is betweeen 100 and 150, and it's just a straight pipe that go it it's place, and it's very easy to do, I'm actually looking into it my self because I just bought mine a month ago, and the dpf drives me nuts, not only does it go into regen at the most incovinient times, but while it's active, you can only build up to 20 psi boost... which is no bueno... but they are very easy to swap back and forth, just bolted on one end, and slip fit into the other then.. maybe an 40 min tops to do it you self... remember.. you can't delete the DPF with out having a tuner that will support the deleted DPF...
Fleet Mechanic
Joined: Oct 2011
Posts: 1,778
Likes: 287
From: Down SOUTH
And remember all the extra Swooshing Air noise from the exhaust after DPF removal .... The stock muffler isn't really a muffler.
I replaced it with a MBRP muffler & it cut the air noise n half
I replaced it with a MBRP muffler & it cut the air noise n half
Senior User
Joined: Mar 2011
Posts: 358
Likes: 0
What's the point of the 'muffler' cause I thought it looked awfully small considering... But what's the purpose of it
Senior User
Joined: Mar 2011
Posts: 358
Likes: 0
Nice.. Good to know that it's straight they cause I was gonna chop it out... Might as well leave it now..
Logistics Pro
Joined: Nov 2001
Posts: 3,788
Likes: 103
From: Georgia
I'm trying to tell from your sig, but I guess I'll just ask. Are you saying you installed the MBRP muffler in the stock tailpipe, or installed an after market exhaust (4 inch I guess) and then added the MBRP in that exhaus. I'd like to get more of a rumble and less of a swoooosh sound.
Fleet Mechanic
Joined: Oct 2011
Posts: 1,778
Likes: 287
From: Down SOUTH
I first replaced the cat & DPF with the AFE 4" pipe from stock downpipe back with stock muffler.
I couldn't STAND the air blowing noise - it Was HORRIBLE
I removed the stock muffler & the air noise was still exactly the same.
I then , added the MBRP 91031 (I think) stainless muffler.
It now has deep rumble with a LOT less air blowing noise that you cannot hear in the cab.
You still hear a little air blowing noise Outside the cab though.
I couldn't STAND the air blowing noise - it Was HORRIBLE
I removed the stock muffler & the air noise was still exactly the same.
I then , added the MBRP 91031 (I think) stainless muffler.
It now has deep rumble with a LOT less air blowing noise that you cannot hear in the cab.
You still hear a little air blowing noise Outside the cab though.
Logistics Pro
Joined: Nov 2001
Posts: 3,788
Likes: 103
From: Georgia
OK, thanks. Now the stock pipe was 3.5 inches right? How did the 4 inch pipe go into the stock muffler? Did you have some sort of step down?
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Junior User
Joined: Sep 2010
Posts: 97
Likes: 0
From: Northern Illinois
I did the H & S Minn Maxx on my 08 F250, Cat and DPF delete - made a 400+ trip from Southern Illinois, to Northern Illinois on Nov. 10th2012,with the cruise set at 66 mph - hand calculated mileage was 20.6 all highway,only two stops to empty bladder – No fuel stops.
With the right gears 20 plus mpg is possible
Senior User
Joined: Dec 2011
Posts: 108
Likes: 0
How are you guys getting your truck instected? I want to remove my DPF but I am afraid I won't be able to get my truck inspected. The county I live in has an emissions check.
Aside from the "good ole boy" shop how do you guys do it?
Aside from the "good ole boy" shop how do you guys do it?
Logistics Pro
Joined: Nov 2001
Posts: 3,788
Likes: 103
From: Georgia
I think many in that situation just return the truck to stock for the inspection. Not a big job once you;ve done it a couple times.
Senior User
Joined: Mar 2011
Posts: 358
Likes: 0
Ill co-sign him on that... It's not a big deal to do it for inspections once ever year or two...