Flowmaster FlowFX Exhaust Systems
A Cat-Back Exhaust System with Deep Powerful Tone
If you’re looking for a deep powerful tone both inside your cab and outside, these Flowmaster FlowFX Exhaust Kits have everything you need to upgrade your exhaust today. A straight through muffler design, cat back exhaust system made of 409 stainless steel and capped off with a dual tailpipe with 304 stainless black ceramic coated exhaust tips: what more could you want in an exhaust system. Upgrading your tailpipe diameter helps your engine breathe, allowing exhaust gases to escape with minimal resistance. And a performance muffler, with straight through design that is chambered gives that moderate to aggressive sound wave / tone that most enthusiasts crave. Read on to learn why a Flowmaster Exhaust System is exactly what your truck needs.
Bullet Point Breakdown of the Flowmaster FlowFX Exhaust Systems
No time to read this whole article? Just want the quick and dirty dets? “Too long; didn’t read” you’re fav acronym? Don’t worry. We hear ya. Here’s our Midwest Aftermarket Bullet Point Breakdown of the Flowmaster FlowFX Exhaust Systems:
- ***For Most F-150, Silverado 1500, and Ram 1500 applications:***
- 3 inch inlet pipe made forom T-409S Stainless steel
- 2.5 inch 409S mandrel bent tailpipe exit
- 4.5 inch T-304S stainless steel tips with black ceramic coating
- Solid diameter exhaust pipes for most stock to performance engines for light duty trucks
- Alloying element material and mandrel bending make for great exhaust flow
- FlowFX mufflers give the sound truck owners want with the flow your truck needs
- Formula 409 stainless is heavy duty and designed to last
- Flowmaster mufflers are mig-welded for ultimate durability
- FlowFX uses a straight through perforated core surrounded with high temperature sound absorption packing materials
- Austenitic stainless steel tips are coated in black ceramic for increased corrosion resistance
- With sound between Race Mufflers and Street Mufflers, the FlowFX series is right in that sweet spot
- For most, FlowFX kits can be easily installed at home in your own garage
Flowmaster FlowFX Exhaust Systems
Let’s take it from the top. Your stock exhaust system sounds like crap and isn’t up to snuff when it comes to exhaust flow. There. I said it.
For the amount of horsepower you vehicle has, you either need to up your diameter size by an inch or switch to a dual exhaust or a combination of the two. Don’t worry though. Because these FlowFX Exhaust Systems make it easy and affordable to make your truck sound moderately aggressive without too much trouble. And for many of us, you can install this kit right at home in your own garage.
Before we get into the technical details of it all, let’s cover the sound.
FlowFX Muffler Sound
Tone or muffler sound is pretty much up to personal taste. Some of us like louder sound, with open headers that are super aggressive. Some of us like something closer to stock with a bit of aftermarket sound thrown in, but nothing we’re gonna get a ticket for driving down main street.
The FlowFX comes in near the middle of those two extremes. It is much more aggressive than your stock factory exhaust, but it isn’t as aggressive or loud as say a 40 Series from Flowmaster. When in doubt, I like to hit up YouTube and try to get a feel for the sound as well. There’s nothing wrong with that either.
But if you’re looking for that moderate to aggressive sound, something that will give you a true aftermarket tone without the prospect of glass pack tickets from the local po po, then the FlowFX is the muffler for you.
The FlowFX Series muffler has a reversible straight through design. Yet it is packed with high temperature sound absorption fibers to give you the perfect tone for your vehicle. The straight through design means there is less resistance than stock mufflers. And the packing material gives you that deep mellow performance tone you crave.
When it comes to the install, the muffler case is compact so it will fit in tight spaces, making the install easier and most even DIY, so you can do them at home instead of paying a mechanic.
And the 409S Stainless Steel construction will last for years to come. You really can’t go wrong with Flowmaster, and when you’re looking for a moderate to aggressive tone, FlowFX is the way to go.
Resistance, Backpressure, and Scavenging
Pipe diameter is a complicated thing. I fear that when we start looking at aftermarket exhausts, the first thing we all think is that bigger is better. And to a certain extent that isn’t totally wrong. But you really want the correct size for your engine. And even then it isn’t exactly a one size fits all situation. So we’ve created the handy chart you probably saw on the previous page, the Exhaust Systems page. What that chart is designed to do is just give you a rough estimate of what size diameter pipes you actually need for your engine in order to optimize your exhaust, balancing out resistance and backpressure with scavenging.
Keep in mind that the stock examples are from a particular year, make, and model. And those are stock examples. So if you added on a tuner and a turbocharger, you’ve increased your horsepower, so you’re gonna have to check out the HP or horsepower column out. But in general, most 1500 or half ton trucks you’re going to be just fine with a 3 inch single pipe exhaust. If you’re going to dual pipe, you’ll want a 2 inch up to maybe a 2.5 inch once you hit the 400 or so horsepower range. And if you’re splitting off from a 3 inch downpipe such as that in this FlowFX kit into a dual exhaust after the muffler, you’ll want at least a 2.25 or 2 and a quarter inch diameter exit pipe. Tip size is more about looks than anything else, and in general most of us like bigger tips. But as long as your tip size is at least the size of your exit pipe on the one end and larger on the other, you should be in the clear.
My point is that you don’t need a 5 inch diameter pipe on your truck or Jeep unless if you’ve really kitted it out so that you are rocking more than 650 Horsepower. For most makes, models, and applications, the FlowFX Exhaust system will be right in that sweet spot.
But what do I mean about “sweet spot”?
This really has to do with the terms above. Now everyone knows about resistance. One of the key reasons to upgrade your exhaust is to lessen resistance and friction. All of these issues put together create what is known as backpressure.
Backpressure is when your exhaust is so restrictive that your exhaust gases must be forced or pushed out by your engine.
In other words, some of the power created by firing a cylinder must be used to push your exhaust fumes through a tight pipe instead of just being used to turn your wheels. This issue, known as backpressure, robs power from you engine.
But the solution to preventing backpressure isn’t to just remove your exhaust pipes completely or get as big of a diameter pipe as you can possibly find for your vehicle.
And the reason is due to the other term: scavenging.
Scavenging occurs when your exhaust gases are able to escape at the perfect rate such that the gas fills the exhaust pipe or downpipe in such a way that a miniature vacuum field is created. This perfect combination between gas density and volume of your pipe plus velocity of the gases creates a pocket of space that helps pull the exhaust fumes from the next cylinder as it opens up, sucking the fumes out and helping to pull the new fresh air back into the chamber to replace them.
If your exhaust pipes are too large, then you won’t get any scavenging. And while you want to eliminate resistance, you don’t want it to be completely gone either. You want that perfect amount for your engine. And one way to figure this out is to get an exhaust pipe diameter that is in the sweet spot for the amount of horsepower your specific engine is putting out.
Hence, the chart.
Now the chart is really just a guide. The truth is that a lot of math and science and engineering went into calculating those horsepower ranged and their corresponding diameters. So think of these ranges as an easy guide and nothing more. The goal is to stay within that sweet zone. If you shoot up too high, too wide of a pipe, you’ll lose out on scavenging. And if you are too small on your pipe, you’ll have too much resistance and backpressure. So you need to find that sweet spot.
And for most half ton trucks that haven’t been heavily modified, you’re going to be right in the middle of that sweet spot with the FlowFX exhaust from Flowmaster. That’s part of why we are such big fans of this particular product. It works great for a large subsection of truck owners. And it is easy to install and built to last. What more could you want? Optimal exhaust: check. Time to hit the open road.
Our Promise of Exceptional Service and the Lowest Prices on the Interwebs
When you’re ready to order your Flowmaster FlowFX Exhaust Systems, we hope you’ll get yours from us here at Midwest Aftermarket. We only promote products we believe in and sell them at the lowest prices, shipping quickly to you for free if you’re in the lower 48 states. We have an excellent return policy and strive to get you the right product in perfect condition the first time.
What are you waiting for? Give us a call or place an order directly through our website. We’ll get your product out to you ASAP so you can enjoy your vehicle and make it your own. If you have a vision of what your truck or Jeep could be, let us help you achieve that image, that goal. We put aftermarket right at the tip of your fingers on your smartphone, web browser, and even via various apps, making ordering the parts you need super easy.
Let us help make your aftermarket dream possible. Let us help you build your dream machine. We want you to drive the truck or Jeep of your dreams right now. So when you get it installed and love it, make sure you share us some pics on social media so we can live vicariously through you. Because we too are aftermarket enthusiasts, truck and Jeep owners, who love and own many of the products we sell. In other words, we don’t just work aftermarket--we are aftermarket.
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