Free Shipping On Orders Over $49. Details

Talk to a Mustang Enthusiast
1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $5,000 For Your Mustang! Enter daily!

Pypes High Flow Metallic Catalytic Converter Kit (11-14 All)

$0.00
Market Price $369.99 You Save 10% ($38.31)
Our Price

$331.68 (pair)

FREE Shipping

  • Item 20135

Will this fit your Vehicle?

In Stock Ships same business day.
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features, Video & Details

    • Perfect for Force Inducted Mustangs
    • Rugged Construction
    • Polished 409 Stainless Steel Exterior
    • Metallic Substrate Material
    • Small Under-Carriage Footprint
    • Will Pass Most Emissions Tests
    • 3" Inlet/Outlet Diameter
    • Fits All 2011 to 2014 Mustangs

    Review & Installation Video

    Review & Install Video

    So you should be checking out Pypes cats for your '11 through '14, if you're the owner out there that might be running a little bit of forced induction, maybe a small can of nitrous, if you're looking to stay legal in terms of emissions. But if you're looking to ditch your factory-restrictive cats for something that's going to flow a little bit more nicely, give you a little bit more a bump in volume. These cats are going to give you a great balance in noise reduction, and getting rid of that gassy smell. If you are running an off-road system, you're also looking to quiet that down as well. When it comes to the installation, expect to spend a couple hours in the shop, because you are going to need to cut and get these into place. For that, you're looking at two out of three wrenches on my difficulty meter here. These cats are going to feature a three-inch inlet and outlet, and can be adaptable to most stock systems. But you're not going to have any issue getting these on with an aftermarket three-inch. These are going to be made up of a durable 409-stainless steel that's going to be polished. They will be made out of a durable, substrate metallic material. It's going to make them ideal for a forced induction application. Now, I say that because metallic materials are going to be able to accommodate higher heat exposure. Extensive heat cycles and damage will take a toll on ceramic cats, and if you [tap] them once, if they start to come apart, they will deteriorate very fast. If you're running a stock or a mild bolt-on Coyote and you're not too concerned about the build quality, SLP will have an option that will run a little bit less. That's still going to help you quiet down that off-road mid-pipe if you're looking for that.Now, in terms of the pricing, expect to be spending about $280 to $300 to get these onto your car, as well as keep you emissions-friendly. Now, compared to SLP's style, like I've just mentioned, expect to be spending around $190 to $200. But again, take into consideration, it's not going to have that tough metallic durability. Install-wise here, guys, like I said a little bit earlier, this is going to call for a two out of three-wrench job on my difficulty meter here, and about two hours' worth of labor, depending on whether or not you're going to be replacing your factory cats or adding these onto an existing off-road mid-pipe. Either way here, guys, you are going to need a jack and jack stands to get that car off the ground, a basic socket set, last, but not least here, a Sawzall, and a couple fresh blades. Now, if you are going to be installing these on an off-road mid-pipe, the locations are going to be very easy to see exactly where you're putting these in. However, if you are going to be replacing your existing cats, make sure to do a bunch of measuring just to make sure once you clamp them on or weld them in that you're good to go. That's going to wrap up my quick review of Pypes high flow metallic catalytic converters, fitting your 2011 through 2014 Mustang, which can be found right here at americanmuscle.com.

    High Flow. Are you looking to free up your restrictive stock exhaust, but are required by law to run Catalytic Converters? Then AmericanMuscle has the answer you need in the form of Pypes High Flow Metallic Catalytic Converter Kit.

    Easy swap at the track. Every car enthusiast knows that catalytic converters suck the lifeblood - horsepower - out of your engine. If you're running a Pypes modular x-pipe style configuration for track / racing purposes, these cats give you an easy way to be street legal when you leave the track.

    Rugged construction. These Pypes Mini Catalytic Converters are build from polished 409 stainless and feature a durable Metallic substrate material making them perfect for force inducted applications. They weigh in at 2.5 lbs each and only measure 11 inches in length.

    Small Footprint. Installed, the Pypes catalytic converters have a very Small under-carriage footprint that only takes up a virtually invisible 7” in length making them perfect for custom applications.

    Will pass most emissions tests. Pypes High Flow Metallic Catalytic Converters will pass emissions testing procedures in most states. However, check your local and state ordinances for installation and usage regulations.

    Application. The Pypes High Flow Metallic Catalytic Converter Kit is specifically designed for use with power adders such as a Supercharger, Turbo-charger, or Nitrous equipped Mustang from 2011 to 2014.

    Fitment: 2011 2012 2013 2014 Details

    MPN# CVM11K

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    • (2) Catalytic Converter
    Installation Info
    Tech Specs
    Specifications:
    • Universal 3" OD and ID design
    • Polished 409 stainless steel
    • Metallic substrate material
    • Includes slots and 02 bungs
    • Sold as a set of two
    Will it fit my Mustang?

      Customer Photos

        Questions & Answers (24)

        5 Top Rated Questions

        Tune Do I need a tune?

        • A tune is not REQUIRED, but always RECOMMENDED to maximize the performance you are able to get out of your mods. Contact BAMA and see what they can do for you, Great Guys!

        Helpful (2) Show 1 more answer

        will these high flow cats make my stang not smell like gas the same as the factory cats or will it smell of gas just less

        • The Pypes High Flow Metallic Catalytic Converter Kit will slightly increase exhaust odor over the stock cats. If the car smells like fuel, this typically indicates a rich condition, which can be caused by a number of different issues.

        Helpful (1)

        This might be a stupid question, but will these fit on the stock hybrid pipe that comes on the 11-14s?

        • These can fit with the stock hybrid pipe however these are designed specifically for Mustangs with forced induction.

        Helpful (1)

        Will these work for a n/a 2014 3.7l and if it doesn’t what issues would it cause due to me not being force induction

        • These will still work on an N/A car yes.

        Helpful (0)

        I have a flowmaster outlaw series catback will this fit?

        Post Your Question
        10 More Questions
        Can I run these with bbk long tube headers and off road xpipe? 1 answer
        Hi, It says these will only fit 11-14, so I was wondering, why exactly wont these fit a 2015-17 mustang? 1 answer
        I recently had jba high flow catted x pipe installed and have a check engine light a 420 and 430 codes for bad cats will these turn the light off or will the light stay on? 1 answer
        Will these pass NY smog test? 1 answer
        Will these fit with this cat back? https://www.americanmuscle.com/pypes-midmuffler-catback-11v6.html 1 answer
        Can I use these to replace my catalytic converters on my 2013 Shelby gt500? 1 answer
        Are these high flow cats emissions legal in California? 1 answer
        Are these 200 or 400 cell count? 1 answer
        What temps can these cats hold up to? 1 answer
        Hi AM, I currently have a 2013 V6 with Roush ABs and CAI. Along with BBK Shorty Headers and plan to keep it that way. What will be some differences regarding volume and tone? Will these cats throw a CEL? Thanks! 1 answer

          Customer Reviews (29) Write a Review

          Overall Rating 4.2

          out of 5 stars

          Installation Time:Full Day

          Installation Cost:$100-$250

          • Performance Gain 4.083333 4.1
          • Fit 4.208333 4.2



          • 4/5

            May 28, 2019

            Look good but won't pass WI emissions

            Look great welded on but would not pass emissions alone. Had to install spark plug foulers on O2 sensors to pass.

            MilwaukeeJohn

            Year: 2011 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            April 25, 2019

            There are a good quality

            They sound good whit roush and resonator delete there are a great combinations of sound

            BrianC

            Year: 2012 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            January 10, 2019

            opened up

            These for sure make my mustang flow better. You won't feel any power gains but the sound is very different. I run short tube headers with a Ford x-pipe and Pypes mid muffler cat backs and I can't stay off that throttle. If you have the budget go for it. The only downside is that I did get a f@#ing check engine light.

            DarkHorse

            Year: 2012 Submodel: V6

            Helpful (2)

          • 5/5

            Installation Time: Afternoon

            November 07, 2018

            Pypes high flow cats

            Amazing product!! Sounds great and you can notice the difference on the low end.... It does limit ground clearance so watch those bumps.

            CtK

            Year: 2014 Submodel: GT

            Helpful (1)

          • 4/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            September 15, 2018

            Pypes High Flow Metallic Catalytic 2014 GT

            These work really really good. Eliminates that gassy smell if you were running w/o cats like i was. It will muffle the sound for about 15 and yes, it will reduce airflow but just a tiny bit and like a -10HP. As for sound , i run these cats now with the a corsa GT 500 dual exhaust and no resonators. Sound is very very aggressive and really good. Not obnoxious kind.

            ERA

            Year: 2014 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            June 11, 2018

            Very good converters

            Got these for my birthday and got them installed and these high flow cats bring out a nasty mean sound with my roush axle backs. They had to be custom fitted to my mustang other than that the only problem is my o2 sensor is causing my CEL to come on due to the change of the converters but that can be fixed with a tune so im still happy with how they turned out

            JamesB

            Year: 2012 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            April 21, 2018

            Pypes high flow cats sound great

            Added these pypes high flow cats with a custom cat back exhaust with borla Ataks sounds like a beast driving down the street a lot of head turns couldn’t be more happy with these also didn’t have any sensor lights turn on.. definitely recommend. Also feel more air flow and horsepower at higher rpms..

            Nick

            Year: 2013 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            April 10, 2018

            Great product

            Got these welding into my leathal performance off road h pipe for $175 and passed NJ emissions test.

            DeronH

            Year: 2013 Submodel: V6

            Helpful (6)

          • 4/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            March 13, 2018

            Great parts

            The only issue that was wrong with them is the fact that the muffler shop told me they didn’t fit perfectly and had to use some spare metal to make it fit other than that they’re great!

            SteveU

            Year: 2012 Submodel: V6

            Helpful (4)

          • 1/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            March 13, 2018

            High flow cats

            Very unhappy with these. Installed them and couldn't pass emisson here in the northeast. Buyer beware.

            Tyler

            Year: 2012 Submodel: GT

            Helpful (6)

          • 1/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            February 20, 2018

            Don’t waste your money

            I had a Cat related CEL and figure I’d replace the cats and do a slight upgrade wit these. But CEL came right back on, also there was no performance gains (which I didn’t expect) or any change in the exhaust note. I just replaced them with New Factory cats and the problem was fixed.

            Jayboogz

            Year: 2014 Submodel: GT

            Helpful (6)

          • 4/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            November 28, 2017

            Pretty good.

            Bolted on an tac welded. Looks good. Past inspection.

            mariom

            Year: 2011 Submodel: GT

            Helpful (4)

          • 1/5

            November 28, 2017

            not cal smog legal

            A M needs to get there fact correct about California smog rules. These are not smog legal in California

            DavidS

            Year: 2011 Submodel: GT500

            Helpful (5)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: 0-$100

            March 16, 2017

            Review

            These cats still sound like I have no cats on my car. It is a tiny bit quieter but still packs a punch. My only issue now is to fix my o2 sensors so my check engine light turns off

            ChristopherR

            Year: 2014 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Afternoon

            March 10, 2017

            Sounds Great and quality product

            I put these on my 2010 Shelby GT500 with the Stainless Works Off road H pipe setup and it nailed the sound I was looking for. These DO clamp on which is what I wanted.

            Overkill

            Year: 2010 Submodel: GT500

            Helpful (7)

          • 2/5

            Installation Time: Afternoon

            February 15, 2017

            Not too happy :(

            I had these cats installed on my 08 Stang, engine only has JTL CAI everything's pretty much stock. Added these cats and along with Offroad X and they just recently failed about 3 days ago CEL is on for Cats bellow efficiency threshold. Now I do have a tuner and I do have a catted and catless tune. I ran catted because it is catted and wanted everything to be emission friendly but still have that great sound. I am now trying to see if the car will still run properly with a catless tune, not too sure.. It'll turn off the rear 02 and probably not throw a code again. But This kinda sucks 284 dollars down the drain after 10k miles :( My car only has 60k miles on it.

            Cent

            Year: 2008 Submodel: GT

            Helpful (11)

          • 5/5

            Installation Time: Afternoon

            December 05, 2016

            Worth the money.

            Well I'm not much of a mechanic and I didn't know that if you don't plan to change your headers than no point changing the cats. It is a difficult job and pointless without the headers.

            DiHun

            Year: 2011 Submodel: GT

            Helpful (4)

          • 2/5

            August 13, 2016

            CEL issue

            Bought these because I wanted my stang to be a little louder which this product totally delivers on! BUT it does come with a CEL issue. I had these installed by the dealership and now 1 week later CEL. Took back to dealership and they said it is just throwing the CEL because of sensors. It is completely hooked up properly but they said it will throw a CEL unless I tune it out(which will void warranty). Wouldn't recommend if you don't want to tune your cats out.

            Dayton

            Year: 2013 Submodel: GT

            Helpful (7)

          • 5/5

            August 03, 2016

            GREAT CATALYTIC CONVERTERS

            GREAT FINISH AND FIT.SMALL AND COMPACT. CHANGED THE SOUND ALSO.DEEPER IN SOUND.PERFECT

            Noel

            Year: 2011 Submodel: GT500

            Helpful (5)

          • 5/5

            July 14, 2016

            High Flow cats do make a difference

            I asked around a lot of people and they would say don't get high flow cats you won't gain any power or sound. That's a complete lie, you feel the car open up and breathe a little better in terms of power and not only that they make the car sound like a beast. Add around 15-20 volume and make the tone a lot more aggressive, I paired these with a JBA 3 inch to 2.75 Inch H pipe and it made my roush axle backs scream, the car sounds like a beast.

            Kaveh

            Year: 2014 Submodel: GT

            Helpful (4)

          Related Mustang Categories