(approx) 2 Hours
Light to Moderate mechanical skill required.
So, if you own a '14 to '18 Silverado with the 5.3-liter motor and you were looking for the deepest sounding exhaust systems currently available, you should be checking out Magnaflow's MF Series Dual Side Exit System with the split side exit configuration. Thanks to a very large 3-inch diameter mid-pipe and that baffled and chambered muffler, the MF Series does give the truck a nice deep and lopey idle, and all the way up to redline, it keeps things sounding pretty deep as well. I'm actually going to give this system a strong three out of five on my loudness meter. Even though it gives plenty of good thumping tones, it doesn't provide a lot of drone inside the cab, and I would say this is right on the threshold of what would be comfortable if you do daily your truck. Other thing I really like about the system if you daily your truck is it's made out of factory grade 409 stainless, so you're not going to have to worry about rust or corrosion even if you take your truck off-road or if you see a lot of rain or snow. Besides that, the MF Series installs very easily. It's actually a bolt-on application. The mid-pipe is cut to length already depending on your cab and bed length so, I'm going to go ahead and give the install very easy one out of three wrenches on my patented difficulty meter. It should take you about two to three hours to get this done at home with basic hand tools. So, if you like the sound of the MF Series, you like the price and the quality, go ahead and stick around. I'm actually going to show you guys how to get this system installed step by step, so let's go ahead and get started. To install your new cat-back, you'll need the following tools, a standard drive ratchet, a 13-millimeter socket, a 15-millimeter deep socket, and two 11/16 wrenches. Optional but helpful tools include a cordless impact, an exhaust hanger puller tool, and spray lubricant. So, before we install our new cat-back, we have to remove our factory exhaust system. We're going to be working directly behind the catalytic converter. First things first, we have to unbolt a clamp securing the factory exhaust to the truck. Gonna need a 13-millimeter socket for this one. All right, now that we've loosened that clamp, we're going to pull all of our exhaust hangers out of their rubber isolators. There are four in total, one right behind the cat, two behind the muffler, and one at the tailpipe. It is rubber on metal, so it's a good idea to spray them down with some spray lubricant, and it's also helpful to have an exhaust hanger puller tool or some sort of pry tool. So, once you get to that last rubber isolator here at the tailpipe, you want to take your time removing it. The factory system is heavy. It is one piece, however, you can remove as one piece. Once you pull it out of this last rubber isolator, go ahead and let this exhaust rest on your axle. Again, be careful. You got some brake lines and things back here like that. Once it's resting on the axle, go upfront towards the muffler, push the entire system back towards the rear bumper, that'll allow your flex fitting to drop down past your crossmember. Once you've done that, you can actually pull the entire exhaust from the vehicle. So, we have our factory cat-back removed. We went ahead and we mocked up the MF series system, that way we can see where all this crazy bent piping is supposed to go. Now, that we have everything set up, you can see that yes, this is, again, a bolt-on system. We have the factory-length mid-pipe up to the muffler, we're reusing all our factory hangers and rubber isolators, and in order to accommodate the new dual exit, Magnaflow does provide us with a new hanger and a rubber isolator. There's a pre-drilled hole in your frame already, so I'll show you guys where that's supposed to go in a minute. A couple of cool things to point out about the MF Series. It is made out of factory grade 409 stainless, so it will stand up to the test of time. As you can see, the factory system is also 409, has some very light rust and surface corrosion, but you don't have to really worry about it falling apart and that's certainly the case here. So, the MF series is a good option if you daily your truck or you take it off-road or you go through rain and snow and things like that. Last cool thing to point out here, again, this is one of the deepest sounding exhausts and there's a good reason for that. The inlet pipe is 3 inches versus the factory 2-3/4 inches.Wider diameter tubing generally results in a deeper tone, so you got that in combination with the MF Series muffler, which you can see is a hell of a lot smaller than the factory muffler. I'm a big fan of that. That's less restriction, more volume, and a deeper tone. All right, now that we've got all that knocked out, let's go ahead and start installing our new system. So, first step of our install is putting on our new mid-pipe. The mid-pipe secures just behind the Y-pipe. We're reusing that factory clamp so you're going to need a 13-millimeter socket to tighten this down. You want to tighten it down enough that it stays in place, but you want to keep it loose enough that you can actually have a little bit of wiggle room because we want to make sure everything fits and lines up. You're also reusing your factory rubber isolator just behind the crossmember. Now that we got our mid-pipe in place, we can install our muffler. Before we put the muffler on the mid-pipe, go ahead and make sure you got your largest clamp on here. That's going to secure the flared end of the muffler to the mid-pipe itself. Once you got those two pipes mated, go ahead and throw the hangers on your muffler into the original factory rubber isolators above. Now that our muffler is in place, we can begin installing our tailpipe segments. You're going to grab the passenger side over-axle pipe, and before you install this on the muffler, you want to make sure you install two clamps on the outlets of the muffler as you'll see behind me. Now, that over-axle pipe is in place, we can install our tailpipe. Before we put the tailpipe onto the flared end of the over-axle pipe, make sure you throw another clamp on there. You're then going to put the hanger in the last rubber isolator, the one we removed earlier for our factory system. Now that our passenger side is all ready, we're going to go ahead and do the same thing to the driver's side. We're going to start with our over-axle pipe. We're going to fit the flared end of this into the outlet of the muffler with the clamp that we installed earlier. Now, before we install our driver's side tailpipe, we have to install the hanger that Magnaflow provides us. You're gonna have the hanger set up like so, with two nuts in between these two flat washers. These flat washers are going to sandwich in between the hole that's already in your frame. That hole is located directly in front of your tow hitch bracket. You're going to need two 11/16 wrenches to tighten this down. Now that you got your hanger installed, you can install your driver's side tailpipe. Again, it's the same process as the passenger side. Before you fit the flared end into the over-axle pipe, you want to make sure you have one of the clamps on here. Now that our entire system is set up and in place, we're going to install our exhaust tips. You're going to grab the last two clamps in the kit, throw them on the ends of your tips, throw your tips on your tailpipes, and you're going to tighten those down with a 15-millimeter socket once you got them lined up. So, once you got that first tip tightened down, go ahead and do the same thing to the other side. Once both tips are tightened down, you can actually begin tightening down everything else on the system working your way from back to front. You're gonna need the same 15-millimeter socket for the rest of the clamps, and once you get to that Y-pipe up there with the cat, you're going to use that 13-millimeter socket that we started off with earlier. So, once you've got that final factory clamp tightened down, that should actually wrap up our install, and that also wraps up my review of the Magnaflow MF Series Dual Exhaust System with the side exit configuration fitting your '14 to '18 Silverado. I'm Travis. Thanks for watching. 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Features, Description, Q&A, Specs & Installation
Fitment: 2014 2015 2016 2017 2018 Details
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Will this system work on a 6.2l ?
Magnaflow lists this exhaust to be specific to the 5.3L options, they do not show fitment for the 6.2L.
Just wondering if this is a full 3" inch in/dual out?
This would be a full 3" mandrel bent tubing yes.
Does this kit require any welding to be installed?
We do recommend having the tips welded into place and for review we have a whole install guide for you here: https://www.americantrucks.com/magnaflow-mfseries-catback-splitside-1417-43l-gmc-manu-install.html
How much horse power and torque gain ????
With this cat-back exhaust, you can see up to a 3-5 HP/TQ increase.
(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.