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Pypes Off-Road Cat Delete Pipes - Stainless Steel (11-14 GT, Boss)

Market Price $181.99 You Save 9% ($17.00)

$164.99

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  • Item 102021
  • MPN# DFM76

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Features, Video & Details

  • Improves Exhaust Flow for More Power
  • Deletes Catalytic Converters
  • Mandrel-Bent Construction
  • 3" 409 Stainless Steel Tubing
  • Pre-Installed Oxygen Sensor Bungs
  • Intended for Off-Road Use Only
  • Fits 2011-2014 GT and BOSS Mustangs

Review & Installation Video

Review & Install Video

Improves Performance. Add even more horsepower and torque to the rear wheels of your Coyote powered Mustang by eliminating those power robbing catalytic converters with a Pypes Off-Road Cat Delete Kit. Pypes Off-Road Cat Delete Pipes will greatly improve your pony's exhaust flow to improve your Pony's overall performance.

Durable Stainless Steel Construction. Manufactured from free-flowing CNC mandrel bent 16 gauge 3" 409 stainless steel tubing, these Pype catalytic converter delete pipes feature pre-installed oxygen sensor bungs and all the required fasteners for installation.

Application. This Pypes Cat Delete Kit is designed to be used on the 2011-2014 5.0L GT and BOSS Mustangs with either the factory manifolds or aftermarket short tube headers installed. Intended for off-road use only.

Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (2) Cat Delete Pipes
Installation Info
Will it fit my Mustang?
  • GT - 11, 12, 13, 14
  • Boss 302 - 12, 13

Most Helpful Reviews

5/5
Amazing quality and fitment

they were a direct bolton beautifully crafted to fir perfectly

Helpful (1)

5/5
Good fit

These fit right up with stock manifold. I had a shop install them along with an H pipe. Both of these items and a pair of GT500 mufflers and my car sounds mean!

Helpful (1)

Overall Rating 4.1 out of 5 stars
Read All 46 Reviews

Customer Photos (7) Submit Your Photo

View All 7 Photos

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5 Questions / 7 Answers

Ask a Question

Tune? How much would a tune help out fter replacing the cats with these deletes?

mikepugh

  • A tune is a must, it all works in harmony. And your check engine light will stay on w/out one.

    JTaylor

    Good Answer (0) (0)

Answer This Question I need this answered (0) (0)

Kooks? do these fit with the kooks 1 7/8 longtube headers?

Alex3209

  • I do not believe it would work. The flange is different. You probably want to stick with the same manufacturer.

    ce750man

    Good Answer (1) (0)

Show 2 more answers Question Resolved

Does anyone know if the gas mileage goes down,??

Tmac50

  • Hi,Installing these Pypes Off-Road Cat Delete Pipes - Stainless Steel will make your MPH will drop, I suggest getting a tune to compensate for the loss

    Chris J

    Good Answer (0) (0)

Question Resolved

Will these connect to the Pypes cut and clamp X-Pipe?

DocLu

  • The Pypes Off-Road Cat Delete Pipes - Stainless Steel (11-14 GT, Boss) will connect to the Pypes Cut and Clamp X-Pipe (05-10 GT) item #20066 (www.americanmuscle.com/pypes-0509-v8-xpipe.html) as they have the same 2.5" piping size.

    KevinD92

    Good Answer (0) (0)

Question Resolved

I ordered and installed the cat delete kit. I noticed that my car have blue smoke from exhaust at cold start. I recorded a video for comparison before the installation and there wasn't blue smoke before. Is this normal after cat delete? I didn't have oil consumption issue before as well.

James

  • When installing the Pypes Off-Road Cat Delete Pipes - Stainless Steel (11-14 GT, Boss) you will want to have a tune on your car. This could be the cause of not having a tune on your car.

    Ricky36

    Good Answer (0) (0)

Question Resolved

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Customer Reviews (46) Write a Review

Overall Rating 4.1

out of 5 stars

Installation Time:Afternoon

Installation Cost:0-$100

  • Loudness / Volume 4.731707 4.7
  • Exhaust Note 4.658536 4.7
  • Fit & Finish 3.97561 4.0
  • Bang For Your Buck 4.414634 4.4



  • 2/5

    Installation Time: Afternoon

    November 04, 2016

    Pypes o/r pipes.

    Quality materials , good performance gain. Absolutely horrid fitment issues !!! Says that these will fit with other pypes pieces OR oem connection. DID NOT fit up to the oem connection, the clamps need to be either wider or neck down from 3 inch to stock.

    StoneRhino88

    Year: 2013 Submodel: GT

    Helpful (1) (0)

  • 1/5

    Installation Time: Full Day

    October 12, 2016

    Absolute Garbage. DO NOT BUY

    2014 GT, flowmaster outlaw catback. These plain and simple do not fit. The clamps that come with it do not provide enough clearance to actually clamp down. When you try to bolt the flange bolts back in, not only do they just spin (because of the cheap "steel" that they use) but since the clamps cant hold on they just slip off the x pipe. Even using OEM clamps the joints just dont sit securely enough to actually "grab" I am so unbelievably frustrated at the lack of quality control and the fact that no one has looked into this shoddy product with all of these reviews. There is a MAJOR issue with this product. Absolutely unbelievable.

    JonnyZed

    Year: 2014 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    September 20, 2016

    Growl

    Nice sound,not to loud or raspy,just enough to make it sound mean,perfect fit,went on in no time at all...very happy.

    Mr02Stang

    Year: 2014 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    May 22, 2016

    Cat deletes

    Love the product..for the most part simple and fast to install

    Sandie

    Year: 2014 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    March 23, 2016

    Excellent

    Sounds great just what i was hoping for! Deep groan at idle, but amazing sound at high revs

    JT

    Year: 2012 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    September 24, 2015

    Great!

    Just got these installed to replace a set of busted cats. They sound an look great! Shipping was fast as usual of course. Nothing but a happy customer here!

    Tiff

    Year: 2014 Submodel: GT Portsmouth, Va

    Helpful (1) (0)

  • 3/5

    Installation Time: Shop Install

    March 21, 2015

    not so good fit, but sound is good

    Installed on a stock factory exhaust. The sound is good. The installation was not so good. I had it installed by one of the best muffler shop in Miami and it took them 3 hours to get the leak out and to get it aligned. $270 labor charge for that. This was also shipped with missing bolt. I ended up buying another one and replacing all the washers and nuts with stainless

    GEM17

    Year: 2014 Submodel: GT Miami, FL

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    February 13, 2015

    Good fit

    These fit right up with stock manifold. I had a shop install them along with an H pipe. Both of these items and a pair of GT500 mufflers and my car sounds mean!

    ChrisMyers

    Year: 2013 Submodel: GT El Paso, TX

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    December 18, 2014

    Amazing quality and fitment

    they were a direct bolton beautifully crafted to fir perfectly

    14trackgt

    Year: 2014 Submodel: GT Orlando, FL, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    October 17, 2014

    pypes cat delete

    Nice fit except the driver side one had the bung for the O2 sensor aiming slightly down. It is lower than anything else under the car and could get hit if going over a speed bump. No big deal though if you think about it. That O2 sensor is for after the cat. Since the cat is now gone the sensor is not needed. Just put the plug in the pipe and delete the sensor in your tune. The exhaust tone is nothing short of beautiful with the stock mufflers. I went to the hardware store and picked up some grade 8 bolts and it was much easier to put together than take apart, because you can put the nut on the side you can get to easier. Enjoy

    ce750man

    Year: 2014 Submodel: GT Janesville, WI, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    October 17, 2014

    Cat deletes

    If you want to turn the volume up to 11, these are what you need! By far the hardest part about installing these is taking the stock cats off. As everyone else has said, accessing the top passenger side bolt through the engine is an option, but you could also use an open ended crowfoot wrench and get it from under the car (which is how I did it). These will give your mustang a more raw aural experience, but might be too much depending on your current mufflers. Definitely not for everyone. Feels and sounds like it pulls harder everywhere.

    SuperCJ428

    Year: 2011 Submodel: GT

    Helpful (1) (0)

  • 4/5

    Installation Time: Afternoon

    October 23, 2015

    Cat deletes

    As others have said, it took longer to get the cat conv. off than to put these pipes in. Made my car too loud, like obnoxiously loud, esp. with the Roush axle backs I have. But I made a miniature glasspack insert to slide in each pipe and it sounds great now.

    Tombstone

    Year: 2014 Submodel: GT Percy, IL

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    October 15, 2015

    AMAZING SOUND

    Have borla s types and wanted some more grumble... I definitely got it with these car sounds so angry now!! as far as the install goes in order to make the leak that some people seem to be talking about go away all you need to do I unbolt the h pipe and slide forward slightly then they go perfect snug no leaks.

    usmcbearer

    Year: 2013 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    February 13, 2015

    Awesome!

    These pipes bolted perfectly up to the headers with no issues. Much easier to bolt these in than it was removing cats. The flange was thick, and the pipes were nicely tig welded. The bunges were also a great fit. The only one complaint I have is that these do not come with gaskets. So be prepared to buy new, or use existing ones. Slightly expensive for what they are, but overall a great buy. Side note ( I removed the cats and also run SLP Loudmouths. Very loud, so if you're worried about police or neighbors, you may want to think twice.)

    Trav810

    Year: 2014 Submodel: GT Tampa, FL

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    July 23, 2014

    Best Bang For Buck

    These cat delete pypes are made very we'll by pypes it's a little ruff getting the catalyst converters off but once you get them off and put these on you will be amazed.!!

    Larry10

    Year: 2014 Submodel: GT Florida, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    July 18, 2014

    Very pleased

    If your looking for the mean muscle car sound look no further! I put these on my mustang and I cannot describe the difference in sound and HP gain! Well worth buying!

    TomTom1

    Year: 2012 Submodel: GT Athens, Alabama

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    June 25, 2014

    Very easy to install after removing original cats

    The factory cats were hard to remove due to the bolts being so tight other then that the pypes delete pieces lined right up

    Sax88jr

    Year: 2013 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    May 27, 2014

    If you want added power, and sound, this is for you.

    I bought this paired with the Pypes X Pipe and Pypes catback, and everything together made my Mustang a completely different car. It made the car much louder than stock, and paired with a tune, I definitely feel a power difference. Though, all of these together will make your car extremely loud. So if you live in an area where the cops care about how loud your car is, I probably wouldn't recommend this. I, on the other hand, haven't had a cop look at me or have had any issues with the sound. The sound, in my opinion, is awesome, and makes me smile every time I start my car up. If you want more power, and a louder car, I definitely recommend getting this product, paired with the catback and x pipe. You won't regret it!

    Yeahlance

    Year: 2011 Submodel: Other

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    May 17, 2014

    Amazing. No other words describe it.

    These new cat deletes will have your jaw dropping!!! Installation was a hassle though! Not the installation itself, but the removal of the cats was horrible. Be ready to have a a gun with enough torque to get those bolts off! But other than that, figment is PERFECT. No leaks or odd noises. Just that MONSTER noise it gives my '14 5.0. I'm running these cat deletes with factory h-pipe, resonator delete and a flowmaster outlaw axleback. My car is WAY too loud though so I'm thinking to going down to maybe american thunder by flowmaster. Overall, these cat delete are well worth your money.

    MrFlowers96

    Year: 2014 Submodel: GT Oxnard, CA, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    May 14, 2014

    The Sound O The Sound!!!

    The sound, what can I say but WOW!! If you like turning heads as you drive by then this is exactly what you need. Ove-corse you get a weight reduction of approximately 15-20lbs for taking those ridiculous cats off. And sure the additional 20hp is a given. But that sound tho... I have a borla x pipe and flowmaster american thunder axleback exhaust, and that combo is music to my ears.. Quite difficult to install due to the position of the bolts, especially the one that can only be accessed threw the passenger side of the engine. So make sure you have all the proper equipment for the job if you intend to do it yourself. Took me an afternoon because i did it alone and by hand. But O man was it worth it once you turn that baby on.

    Iceman61485

    Year: 2011 Submodel: GT Edinburg, TX

    Helpful (1) (0)

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