(approx) 2 Hours
Light to Moderate mechanical skill required.
So, if you own a '14 to '18 5.3-liter powered Silverado or Sierra and you want one of the deepest and throatiest cat-backs available for your truck, you should be checking out the MF Series cat-back behind me from Magnaflow. This system gives you a healthy three out of five on that loudness meter, really opens up the sound of the 5.3 motor. However, unlike some other systems that might cost a little less, this system does not get sloppy or gurgly or raspy. The MF Series muffler on this is a straight-through design but it is baffled and chambered so it really tunes the sound profile of the 5.3 motor. It gives that really deep, almost muscle car kind of sound, which I personally really like. There are a few other reasons why I really like the MF Series cat-back and one of those reasons is quality. This is just under the $1000 mark, so it's pretty middle of the road in terms of higher-end systems. It's made out of 409 factory-grade stainless steel so it will easily last the life of your truck. Certainly a nice touch if you live on the East or West Coast and you get a lot of bad weather. And it installs very easily. There's actually no cutting required for this system, reuses all your factory hangers and rubber isolators, so getting this thing hung up in the driveway with basic hand tools should only take you about an hour or two. For that reason, I'm gonna give this install an easy two out of three wrenches on my patented difficulty meter.So, if you like the way MF cat-back sounds, stick around. I'm gonna show you the install step by step. So, let's go ahead and get started. To install your new cat-back, you'll need the following tools, a drive ratchet with a 13-millimeter deep socket and a 15-millimeter deep socket and an 11/16 wrench. Optional but helpful tools include an impact gun, pry bar, and some spray lubricant. So, before we install our new cat-back, we actually have to remove our original cat-back. Pulling it off the truck is very straightforward. It's actually one piece. So, it's gonna come off of this clamp right here, right behind the Y-pipe and the factory catalytic converter. To loosen this clamp, you're gonna need a 13-millimeter deep socket.All right. With our clamp loosened, we're gonna spray all the rubber isolators and the hangers on our factory cat-back so we can pull it from the truck. All right. Once you've pulled the three rubber isolators immediately in front of and behind the muffler, you have one more here at the tailpipe. You're gonna wanna take your time and be careful pulling this one off. It's actually the last piece holding your factory cat-back to the vehicle. Once you pull it down from this rubber isolator, it's really easy to remove the cat-back. You're just gonna slide it towards the rear of the truck over the axle, then you can let that front extension pipe drop down behind the crossmember and you can pull the entire thing out as one piece. So, now that we got our factory exhaust removed, we went ahead and mocked up our new system, that way we can see where everything is supposed to go. And like I mentioned earlier, there's no cutting, again, for this system. As you can see, it comes as the correct length as long as you select the correct cab and bed length on the product page. Moving on down the line here, you can see we got all our factory hanger locations, makes it even simpler in terms of install. And then, real quick, I wanted to mention you got this nice MF Series muffler that I talked about earlier. That's primarily responsible for giving you that louder tone and that really nice deep, throaty tone. It is a straight-through muffler. However, it is still baffled and chambered, really tunes the sound up, something a lot of other systems don't do when you get higher volume like this one does. And what I really like about this system now that I can show you here, we ditched the factory resonator. That really kills the sound even further. That's one of the other reasons I really like the MF Series cat-back. And then, again, you got those nice split rear exit chrome polished tips, really gives it a classic look here. So, without further ado, let's go ahead and throw the new system on our truck. All right. Now, we're gonna start throwing on our new cat-back and we're gonna start with our front extension pipe. We're gonna reuse the clamp behind the cat that we loosened earlier. You're gonna wanna make sure you throw the hanger into the factory rubber isolator right here behind the crossmember. All right. With our front extension pipe hung up, it's time for us to install our muffler. We're gonna step it up to a 15-millimeter deep socket from a 13-millimeter socket for all these new clamps. Gonna grab one of the large 3-inch diameter clamps in the kit, throw it on the back of the extension pipe like so, then you can slide the flared end of the muffler up here. All right. With our muffler hung and in place, we're gonna start installing the rest of our cat-back. We're gonna grab the over axle pipe for the passenger's side and we're gonna grab one of the smaller clamps in the kit, throw it on the right outlet of the muffler, and then throw this guy on after it. All right. After you place the passenger's side over axle up there, you're gonna grab your passenger's side tailpipe, grab another small clamp, and slide it over the flared end like so before you throw it onto the over axle pipe. All right. With our passenger's side hung up, we're gonna finish our driver's side before we install our tips. But before we do that, we have to install this new hanger. Now, on your truck, there is a hole pre-drilled in the frame up here, so you're gonna sandwich this new hanger in between that hole in the frame with the two flat washers like so. To tighten these bolts down, you're gonna need an 11/16 wrench. All right. Now that new hanger is in place, we're gonna install our driver's side over axle tube. Same deal. You're gonna grab one of the smaller clamps in the kit, throw it on the left side outlet of the muffler, then you're gonna thread this guy over the axle and tighten it down. All right. With our driver's side over axle tube in place, it's the same deal as the passenger's side. We're gonna throw on our new tailpipe. This little rubber isolator, the new one, is a bit of a squeeze so it's a good idea to spray it down. You're also wanna grab the last of the small clamps in the kit, put it over the flared end of the new tailpipe like so. All right. Now that all of our tubes are in place, we're gonna install our new tips. We're gonna tighten them down on the tailpipes, then we can go ahead and make sure everything else is lined up from back to front and tighten down all of the clamps that we installed earlier. So, with both of our tips tightened down, the last step here is tightening down all the clamps that we installed, like I mentioned earlier. Again, you're gonna need a 15-millimeter deep socket for all of these. All right. Now that our entire cat-back is hung up and our tips are in place, we're gonna drive home the original 13-millimeter clamp holding the cat-back to the Y-pipe. Things have shifted during the install, so we wanna make sure we don't get any leaks right here. And that actually wraps up my review and install of Magnaflow's MF Series Dual Exhaust in the rear exit configuration. I'm Travis. Thanks for watching. Keep it right here at americantrucks.com.
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Features, Description, Reviews, Q&A, Specs & Installation
Fitment: 2014 2015 2016 2017 2018 Details
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February 24, 2020
I bought this setup from Magnaflow because I got a cat back for my 2017 Mustang GT 5.0 and loved them. I was not disappointed with this set up on my 2017 Silverado. installation was simple and it looks great. And the sound is awesome. Makes my truck sound deep and powerful without any annoying rasp or drone. I am an old hot rodder and this was the sound I was hoping for. Well Done. Top rate materials, clamps etc, and the muffler and outlets are polished to a mirror finish.Helpful (1)
September 19, 2018
Best Exhaust System For The Price
My thoughts on this cat back is very honest and true. It doesn't cause any drone while driving and when you want it to roar it roars. I recommend this product to anyone with a sierra, because it wakes the beast trapped in the hood.Helpful (17)
Does this system have a lot of cab noise I don't want a lot of noise in cab
Sound is a subjective measure and will differ to each person. This is one of Magnaflow's quieter exhaust systems and will have some cabin noise.
What is the diameter of the MF system. I want the electronic cutout and don't know what one to get.
This would be a 3" diameter
is the 4.3 and 5.3 exhaust the same?
The exhausts for the 4.3L will not be the same as the options for the 5.3L.
Can I get the black tips for this system?
At this time this system would not come in black tips.
(approx) 2 Hours
Light to Moderate mechanical skill required.
What's in the Box
Designed for the Regular Cab with the Standard Box, Double Cab with the Standard Box and the Crew Cab with the Short Box.