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Pypes Off-Road Cat Delete Pipes - Stainless Steel (11-14 GT; 12-13 BOSS 302)

AmericanMuscle no longer carries the Pypes Off-Road Cat Delete Pipes - Stainless Steel (11-14 GT; 12-13 BOSS 302). Please check out 2010-2014 Mustang Exhaust Accessories for an updated selection.
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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

Hey guys, Justin with americanmuscle.com here with my detailed review of the Pypes off-road cat delete pipes available for your 2011 through 2014 Boss and GT Mustang. In this review, I'm going to cover what you can expect as far as benefits when installing a cat delete system like this from Pypes, what you're going to be looking at as far as basic materials, and then a quick little walkthrough on the install itself. While the install is pretty basic in principle, you're looking at two bolts here at the flange, a basic clamp on the midpipe section, there is a little bit of work involved here, guys. Most of it is done underneath the car with a little bit of work through the engine bay. So, I'm going to stretch this one up to a two out of three on the difficulty meter. We'll talk a little bit more about that later on. You should be checking out this system from Pypes if you're looking to increase both the power and the sound in your Coyote-powered Boss or GT Mustang and you're still working with the factory manifolds or an aftermarket set of shorty headers. This is very important to point out, guys, because obviously these things will not work with a set of long tube headers. With that said, however, this would be a good alternative to you guys at home who might be thinking about long tube headers but maybe don't have the money in the budget at this time or don't have the means to install them. With that said, let's get a little further into this system from Pypes. Pypes has a reputation within the industry here to produce some very budget-friendly stuff with the goal of increasing your sound without totally wrecking your budget in the process. These things fall right in line with that. I would categorize these Pypes deletes or cat deletes as a more entry level or value option. With that said, they're going to perform as intended. They have a very favorable rating on the site, and the customer reviews are all pretty awesome. Check them out if you haven't done so already. The factory catalytic converter certainly served their purpose, however they can be a performance and sound killer on your GT or Boss build. Uncorking those factory cats using Pypes' delete system here will not only increase the overall volume and just aggressiveness of your exhaust tone, but you can also look forward to a little bit more power as well thanks to the less restrictive flow. Yes, you can run this system from Pypes without a custom tune, but honestly, guys, you're going to want to pair this thing up with a custom tune. The reason is twofold. First and foremost, you're going to squeeze out a little bit more power along with that custom tune and the cat delete system here from Pypes. In addition to that, you're also going to be able to turn off that check engine light that's ultimately going to say hi to you as soon as you delete those cats. As far as your basic construction, you're looking at 16-gauge 409 grade stainless steel throughout here, guys, 3-inch mandrel bent from tip to tip, factory style connection, 2-bolt flange here at the manifold side, ball and socket style flange at the midpipe side. They do include two pre-welded O2 bungs here. The welds don't look half bad honestly for being a value system. They're even throwing in some brand-new hardware and two clamps for you. I did touch on fitment a little earlier in this video, but I do want to spend a little bit more time on that, guys, because I just want to clear up any confusion and make sure you're ordering the right part. I want to make sure this thing is going to fit your ride. First and foremost, for your header or manifold side, this thing, again, will only fit a factory shorty manifold or your factory header or an additional aftermarket shorty header without issue. As far as the midpipe side of things, well, again, this kit will fit with your stock midpipe without issue or any aftermarket stock length midpipe. X or H pipe, it really doesn't matter here. In my experience, guys, sticking with the same manufacturer for these parts, whether it be the cat deletes and your midpipe, will only result in the best fitment. In this case, you might want to check out the Pypes stock length midpipes. They do offer both an X and an H pipe here on the site. Again, we do have some other options as well. But take my advice, stick with the Pypes stuff, you'll get some good fitment. Finally, I just want to remind you again these will not work with any aftermarket long tubes out there. I know it might be pretty obvious to most of you guys at home, but if you didn't know, now you do. Perhaps one of the best things about this kit here from Pypes is the price, guys. I mentioned it earlier. I'll mention it again. Pypes, as a brand, they're generally one of your more entry-level or budget-friendly brands out there. That's certainly the case here with this system. Looking right around 150 bucks for the cat deletes, which seems reasonable given the materials you have here. Honestly, that's going to peg the bang-for-your-buck-o-meter, at least in my opinion here guys, because you're getting a whole bunch more sound. You're getting a little bit more performance out of adding this kit, but again for not a whole lot of dough. I do want to quickly mention as well, guys, if you don't have one of those midpipes we talked about a little bit earlier, one of those aftermarket midpipes, Pypes does offer a combo kit that pairs up the cat deletes here with a stock length X or H pipe that we talked about a little bit earlier. The pricing is still very reasonable for the combo kit. In fact, it's the way I went when I first got my GT. I went with their off-road H pipe system, and I couldn't have been happier with the results. Switching gears, let's touch on the install. Obviously, much easier than a set of long tube headers, right? That goes without saying. But there still is a fair amount of work involved here, so I'm going to go middle of the road, two out of three wrenches on my difficulty meter, maybe a couple of hours from start to finish to get these guys installed. As far as tools, you're looking at a few metric sockets, a bunch of extension because there are a few bolts you'll need to hit through the engine bay there, and maybe a can of your favorite penetrating oil in case you run into some rusty bolts. Obviously, most of your work is done underneath the car here, guys, so jack and jack stands would suffice. But a lift would be ideal. I did talk about that penetrating oil a little earlier. That will just come in handy again if you live in a snowy or salty area. Those bolts might be a little tough to get off. If the WD-40 or your PB Blast doesn't cut it, try a little heat because that will ultimately be your best bet with removing stubborn exhaust bolts. Going even further, guys, it might not even be a bad idea to have a little tube of high-temp RTV on hand. Because you shouldn't need it, but if you do encounter a small leak at the midpipe connection, you'll certainly be thankful you have it. All right, guys, at the end of the day here this is a great bang for your buck mod that I've had installed on my very own car with great results. If you're not willing or ready to fork out the dough for a set of long tubes or tackling the rather difficult install that goes along with them, this is a great compromise that will give you some good sound and power improvements. They're going to be a lot easier on your wallet compared to those long tubes. And they're certainly going to be a lot easier to install as well. That's my review of the Pypes cat delete system which you can find right here at americanmuscle.com.

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.

Technical Note. Not legal for use on pollution controlled motor vehicles; intended for off-road use only.

Fitment: 2011 2012 2013 2014 Details

MPN# DFM76

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

What's in the Box
  • (2) Cat Delete Pipes
Installation Info
Tech Specs
Will it fit my Mustang?

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Questions & Answers (15)

5 Top Rated Questions

Is there any cutting, or welding involved in the intall? Thanks

  • No, no cutting or welding is involved when performing the install on the cat delte pipes.

Helpful (1) Show 1 more answer

Could these work with my flowmaster outlaw catback system ?

  • These would work with your cat-back yes.

Helpful (0)

will these work with an mbrp 3 inch h pipe

  • Yes, this is compatible with the MBRP 3" h-pipe.

Helpful (0)

Will these work with my Corsa X-pipe?

  • The Pypes Off-Road Cat Delete Pipes will work with the CorsaX-pipe yes. 

Helpful (0)

Would I need to order new gaskets ? Or don't use any?

  • When installing the Pypes Off-Road Cat Delete Pipes, you can reuse the existing gaskets if they are still in good condition, or you can purchase new gaskets from a local Ford dealer or local auto parts store. Typically the gaskets can be reused with no issues due to their design.

Helpful (0)
Post Your Question
10 More Questions
Will this fit with 1-7/8 kook shorty headers and 3 in magnaflow true x pipe? 1 answer
my name is hugo ochoa, my engine ight came on after the installation ,can i use my SCT tuner to get the engine light off or do i have to take it to a tunner shop? 1 answer
Where do I get a tune to run these on my car without throwing any codes or mechanical issues? 1 answer
will these work with Heartthrob Flowpack Cat-to-Axle X-Pipe Kit? i cant seem to find an after x-pipe kit with mid mufflers or resonators from Pipes 1 answer
Would this pipes fit my 2012 Mustang V6? i have a catted X and want to go catless. I see you guys dont have these pipes listed for V6 models. 1 answer
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. 1 answer
Will these connect to the Pypes cut and clamp X-Pipe? 1 answer
Does anyone know if the gas mileage goes down,?? 1 answer
Tune? How much would a tune help out fter replacing the cats with these deletes? 1 answer
Kooks? do these fit with the kooks 1 7/8 longtube headers? 3 answers

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Customer Reviews (94) Write a Review

Overall Rating 3.6

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume 4.606741 4.6
  • Exhaust Note 4.460674 4.5
  • Fit & Finish 3.235955 3.2
  • Bang For Your Buck 4.05618 4.1



  • 1/5

    Installation Time: Afternoon

    January 24, 2019

    Doesn't fit stock 2011 gt

    Went through the giant pain of removing the cats only to find out that these do not for in a stock setup. The clamps don't work and the driver side pipe is too short. Should have read the reviews

    PatrickG

    Year: 2011 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    January 13, 2019

    would still buy again

    Took the deletes to a shop and had them put on, as soon as it started up you could hear the leak. Originally had a CARB legal after cat x-pipe but wanted to make my roush axle backs louder. Wouldn't recommend with aftermarket x pipes unless you can deal with a small leak. It will also smell like gas but the sound is worth it.

    BrandonF

    Year: 2013 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    December 20, 2018

    Pypes cat delete

    Well worth it car is way louder then it use to be with just the xpype and flowmaster axle back made the car sound so much differnt recommend these 100

    JuanL

    Year: 2013 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    December 10, 2018

    Pypes cat delete

    Had Pypes X pipe at first, just added the Pope’s cat delete. Sounds awesome and definitely a great alternative than long tube headers for now.

    CristopherS

    Year: 2013 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    November 28, 2018

    Super loud

    Sad to say I thought I could install with out getting welded but I was wrong, other than that it made my car so much louder than I thought in a good way and I get to hear so many back fires when I shift. Love the sound! my old set up sounded good but was to quiet at idle so this was the perfect solution

    Silva

    Year: 2012 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Full Day

    November 10, 2018

    bolts on nice

    great fit and finish little long and wide on curves but nice and a great company you cn choose from.

    mikedeezy

    Year: 2014 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    October 30, 2018

    Off road cat delete

    The fit and finish was perfect I was so impressed with the quality of this product and how it went together. Thanks American Mussel I will be ordering more performance parts now I know how good this worked out. Thanks Dan Hunter

    DanielH

    Year: 2013 Submodel: GT

    Helpful (2)

  • 3/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    September 25, 2018

    fit is the only problem

    wanted to do it myself but ended up taking it to the muffler shop. It doesn't fit and needs to be welded.

    EdgarA

    Year: 2013 Submodel: GT

    Helpful (2)

  • 3/5

    August 24, 2018

    2014 mustang gt

    Incredible sound and welds just bad firmware on passenger side. The cat delete pipe is angled upwards

    Dhayes725

    Year: 2014 Submodel: GT

    Helpful (2)

  • 5/5

    July 22, 2018

    Bolted straight up

    The power gains where great and the sounds the car produce is even better

    cephasmemphis

    Year: 2011 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    July 12, 2018

    A pain in the rear

    The stock cat bolts on my way 13gt were beyond difficult to remove. So much so that I stripped it. Bought a stripped bolt remover. Then I rounded the bolt and so on. I tried wobble sockets, air impact, break bars etcs. Ultimately I took it to an exhaust shop that could not remove 3/4 non stripped bolts. They had to melt the stock hardware off. The replaced it with bolt and nuts that would allow me to switch in the future for smog tests. Up to this point in stages I have done, outlaw axle back, x pipe and jlt cold air. Each mod was an improvement in sound but I was never happy. It didn’t sound like the typical awesome s550 stang or the 3 valve s197. After the test pipe install, this thing is amazing and have received nothing but compliments. You will lose power but for the soundtrack I was willing. Paired with the Bama tune and ghost cam. It really demands attention.

    Chris

    Year: 2013 Submodel: GT

    Helpful (4)

  • 2/5

    Installation Time: Afternoon

    June 28, 2018

    bad

    really bad fitment I should have not gotten them.

    StevenE

    Year: 2014 Submodel: GT

    Helpful (4)

  • 5/5

    Installation Time: Full Day

    June 03, 2018

    Very nice

    Nice agressive sound just passenger side a pain in the behind to install gotta have patiance .

    MikelZ

    Year: 2014 Submodel: GT

    Helpful (3)

  • 4/5

    March 28, 2018

    Nice product

    Overall I was happy with the product except they wouldn't bolt to my midpipe had to return to order the bbk I wanted the stainless but couldn't justify spending the extra for new midpipes

    MatthewT

    Year: 2011 Submodel: GT

    Helpful (4)

  • 4/5

    March 22, 2018

    Pypes off road cat delete

    Super great product, really opens the car up and makes it extreamly loud!! No more sneaking in after hours hahah

    ErickA

    Year: 2014 Submodel: GT

    Helpful (3)

  • 5/5

    Installation Time: Shop Install

    March 20, 2018

    Cat Delete Pipes

    I like the way it sounds. Make the car more aggressive and improve performance.

    JoseA

    Year: 2014 Submodel: GT

    Helpful (3)

  • 2/5

    March 08, 2018

    Didn’t fit x pipe

    Had to weld it on for it to work doesn’t fit x pipe

    MattH

    Year: 2011 Submodel: GT

    Helpful (4)

  • 5/5

    Installation Time: Afternoon

    March 05, 2018

    Pypes system

    after buying these i have pypes all the way back. it doesnt fit well with the stock h pipe but if you have a pypes mid pipe it fits perfectly. my cars now stupid loud, just the way i like it, and if you need to be quiet third and forth are your best friend. took about 4 hours to install since all my stock bolts were rusted stuck and we had to break them all off. these do come with new bolts and clamps.

    DanielK

    Year: 2013 Submodel: GT

    Helpful (3)

  • 1/5

    Installation Time: Full Day

    December 30, 2017

    Worst idea ever

    This product really sucks the pipes don't match installer had to cut and weld to the stock H pipe I would strongly recommend not purchasing this product ever ever ever ever ever it really sucks

    JosephM

    Year: 2013 Submodel: GT

    Helpful (8)

  • 5/5

    Installation Time: Afternoon

    December 18, 2017

    Good product

    Brought the sound out in a awesome way, only problem was the mounting

    Rl

    Year: 2014 Submodel: GT

    Helpful (3)

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