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Old 05-22-2012, 03:30 PM
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6.4 / Mini Max / Turbo Back Exhaust

After going through all the ordering, installations and set-up, I thought I'd share with other 6.4 owners a couple of tips if you installing a Mini Maxx on you truck.
First of all I ordered a new exhaust "AFE" Turbo-Back with muffler and bungs along with my Mini Maxx. Since my truck is a 2008 Extended Cab, short box it's wheel base is only 142" long. AFE doesn't provide an exhaust for that size. The one I received was for a 156" to 172" wheel base. When assembling the system I soon found out that the system was way to long for truck. The system I ordered was a 49-13022. There are 3 pipes + the muffler and tailpipe with this system. I had to remove 22" off the tailend of the 3rd pipe back including the hanger (called mid-pipe 3). I removed the factory hanger from the frame of the truck as well. I then had to remove 8 1/2" from the tailend of the 2nd pipe (mid-pipe 2 [dpf delete pipe]). I then had to reverse the clamp that came for the rear of the muffler so that the tangs were facing the rear of the truck (the instructions show them facing forward like the factory installed hangers). Once everything was cut, everything fit perfectly. I installed all the sensors with some adjustments to the pressure sensor bracket. Everthing is working great and sounds awesome. Nothing like hearing the turbo breathing through the tail pipe. I just found out that H&S says to unplug all the sensors to the exhaust system. When I called them about why, they said that the Mini Maxx neither talks to or uses those sensors. They advised that I unplug the sensors, remove them from exhaust system and to plug the bungs. It would have been nice to know all this before I ordered the exhaust so that I could've ordered it without the bungs. Advance Deisel is sending plugs for the bungs, but I have to pay for them. By the way, Advance Deisel and H&S Performance have been very helpful and reply almost immediately with their responses. It would have been nice to know when ordering that it should also be broken down by wheel base. Techically they don't make an exhaust for 142" SuperDuty but I was able to make it fit. It all comes down to if you have a 6.4 and order a Mini Maxx you don't need bungs and you don't need any of the factory sensors. As soon as the rain quits I want to take the truck for a ride to get the transmission to relearn it's shift points. Even at the "no power" setting it will set you back in the seat. I can't wait to see what "Hot" setting is going to do. So far all I can say is WOW!!! I'll post later with what my mpg gains are. So far I changed out to an S&B cleanable filter system and had an immediate 4mpg gain.
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Old 05-23-2012, 07:09 PM
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i also have 08' and a mini maxx, s&b cold air intake, and a sinister delete kit...it is crazy how fast and the faster i drive the better the MPG is...up to 21mpg
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Old 09-18-2012, 09:18 PM
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I have the same setup as you guys i only kept my tail section stock for appearance to the highway patrol when i go by (trying not to draw attention to myself). I went through the process of the no bungs thing once before when i bought the sct livewire with the mbrp delete pipe w/bungs. When going to the H&S a friend let me know that there were no need for bungs because pyro 1 on the H and S is actually closer to the turbo and no where near the dpf. This worked out in my favor being that I sold my old dpf delete pipe for 250 bucks and picked up a new one for 125 from parsley's when combined with the mini maxx. I did not know that the faster i drive the better fuel mileage? What settings do you have your H&S on? I run the mild tune with S1H trans tune and 2 on the low boost fueling.
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