2013-14 Shelby GT500 H Pipe W/ Catalytic Converter's have been discontinued Nationally

[Vinnie_B]

KOOKS also has the capabilities to do custom builds for those who prefer to run stock like OEM set ups. I'll be in touch with them and report back my inquirey. Check out GESI website for Hi Performance, EPA approved CATS which by law you have the right to upgrade existing CATS. Again these are options for people seeking alternatives.

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Products - G-Sport Catalytic Converter Parts & Accessories

G-Sport High Performance Catalytic Converter parts and accessories help you meet or exceed local emissions standards. Upgrade today!

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MagnaFlow W/ (Ceramic Cats) I personally dont like ceramic but its a option.

MagnaFlow 2013-2014 Ford Mustang OEM Grade Federal / EPA Compliant Dir

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-625. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the...

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[1Kona_Venom]

@Vinnie_B
I can get you measurements and pictures if you need?
I have the complete factory mid pipes just to clarify
I have 2, with less than 5k miles on them.

They are not for sale.
Whoever decides to buy my car will get first dibs on all my extra S197 stuff

 

[Vinnie_B]

@Vinnie_B
I can get you measurements and pictures if you need?
I have the complete factory mid pipes just to clarify
I have 2, with less than 5k miles on them.

They are not for sale.
Whoever decides to buy my car will get first dibs on all my extra S197 stuff

Ok. But if by chance you decide to let one go let me know please. I need to know the measurements of the CAT itself. Length and O.D of the CAT itself minus the transition cones @1Kona_Venom

 

[1Kona_Venom]

Ok. But if by chance you decide to let one go let me know please. I need to know the measurements of the CAT itself. Length and O.D of the CAT itself minus the transition cones @1Kona_Venom

roger.
will get it tonight or tomorrow.
Will also post the data up to help others out

 

[biminiLX]

Im checking out all options J. Im not making big power to worry about those issues but I do agree.......especially at the power range that yours puts out. But I am impressed with these cats by GESI. Im going to check into them for a possible swap for my existing cats. These are capable of handling up to 850 hp each or per bank or 1700 hp total......thats impressive!

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Makes sense man I just don’t think it’s worth the effort. On your car where we live I’d hang that stock catted pipe on the wall. Keep it just in case when you move but even then you’re better to swap it on for inspection then back off.
These engines are expensive and cats on a modded boosted car with a stock motor (your SS) and cats are nothing but a liability to me. Good luck I actually think those high flow aftermarket cats look great but I’d personally only consider them if it was my last resort.
-J

 

[Vinnie_B]

roger.
will get it tonight or tomorrow.
Will also post the data up to help others out

Cool! Thank you Pete! Thats the whole point im trying to establish in this thread. Options for the members and our Shelby GT500 13-14 peeps. Ive decided to keep my car as original as I purchased it. But I need to enhance and improve those cats because there ceramic and down the line here @Tezz500 is right about them causing big issues if not damaging the motor.

 

[Vinnie_B]

Makes sense man I just don’t think it’s worth the effort. On your car where we live I’d hang that stock catted pipe on the wall. Keep it just in case when you move but even then you’re better to swap it on for inspection then back off.
These engines are expensive and cats on a modded boosted car with a stock motor (your SS) and cats are nothing but a liability to me. Good luck I actually think those high flow aftermarket cats look great but I’d personally only consider them if it was my last resort.
-J

I dont disagree with one word in your reply.......your 100% correct J. Im trying to establish options for every member as individual's options vary from state to state. I know the cats on there now are a hazard waiting to happen. Perhaps just going with another setup and hanging the stock setup for swap when nessary is another great option available to me. But those cats on there now are a concern especially being ceramic!! Having only 4K on them now isnt a major emergency situation but definitely need to be dealt with for sure!! This situation just sped up the need to make a change.

 

[biminiLX]

I appreciate the effort and agree with having good resources for these aging cars. However, included in a thread like this is a reminder the true best advice on any boosted car is catless. I do understand various parts of the country make this easier than others but these cars qualify for many exceptions.
Great thread!
-J

 

[98 svt]

I was waiting for one of you catless peeps to show up and convince me to the catless side.....

Do eeeeet Vinnie

 

[Vinnie_B]

Makes sense man I just don’t think it’s worth the effort. On your car where we live I’d hang that stock catted pipe on the wall. Keep it just in case when you move but even then you’re better to swap it on for inspection then back off.
These engines are expensive and cats on a modded boosted car with a stock motor (your SS) and cats are nothing but a liability to me. Good luck I actually think those high flow aftermarket cats look great but I’d personally only consider them if it was my last resort.
-J

This is the situation @biminiLX i just recently found out from SAI. Yes.....Im very, very pissed about what I was told. So now it puts me in a situation where if I modify from its present original build, ***IF*** I decide to sell it, it will hurt the value. Ive considered because of how pissed i am about the situation!!

I was told as of 7/01/2023 SAI will no longer provide upgrades or service to any build or vehicle they manufactured from 2018 down. Thats right.......they will not even touch or allow the vehicle in there shop!!!! Believe that Sh*t!!

 

[Vinnie_B]

Do eeeeet Vinnie

Damn....another catless peep whispering in my ear......lol.

 

[biminiLX]

This is the situation @biminiLX i just recently found out from SAI. Yes.....Im very, very pissed about what I was told. So now it puts me in a situation where if I modify from its present original build, ***IF*** I decide to sell it, it will hurt the value. Ive considered because of how pissed i am about the situation!!

I was told as of 7/01/2023 SAI will no longer provide upgrades or service to any build or vehicle they manufactured from 2018 down. Thats right.......they will not even touch or allow the vehicle in there shop!!!! Believe that Sh*t!!

That’s some BS. However I agree with your plan to avoid modifying the car when possible. I’m in the same boat with my ‘66 GT350H. I’d like some upgrades but the car will always be most valuable in stock form. My plan is to do some upgrades to make it more enjoyable, but I’ll never modify it to any point that can’t be returned to stock.
I wonder if that’s EPA pressure on SAI?
Catless and a slightly smaller pulley and custom tune. Would you enjoy the car more with those mods? Hell even if the car needs injectors all of the stock parts will be easy to return to stock.
-J

 

[Tezz500]

Damn....another catless peep whispering in my ear......lol.

You shouldn’t mess with your exhaust. It’s against the law.

 

[Vinnie_B]

That’s some BS. However I agree with your plan to avoid modifying the car when possible. I’m in the same boat with my ‘66 GT350H. I’d like some upgrades but the car will always be most valuable in stock form. My plan is to do some upgrades to make it more enjoyable, but I’ll never modify it to any point that can’t be returned to stock.
I wonder if that’s EPA pressure on SAI?
Catless and a slightly smaller pulley and custom tune. Would you enjoy the car more with those mods? Hell even if the car needs injectors all of the stock parts will be easy to return to stock.
-J

I was contacted by them via email after a phone conversation with them expressing my very deep disapproval of there decision to abandon there clients needs to service there vehicle's they manufactured. There reasons......

-They are a manufacturer not a maintenance or repair facility.
-The need to focus on newer products and phase out older builds.
-Current supply chain issues, and difficulty hiring more staff, both mostly caused by the recent Covid situation......blah.....blah....blah.

J.... honestly I dont know what im going to do now. I agree that small changes, that can be reversed or improve vehicle performance shouldnt be an issue. At my current power rating, not much more can be accomplished to enhance more horsepower without upgrading those rods. I might have 50-75 more horsepower to squeak out of it and thats about it with the factory rods. That will put me at a Max output. Not cool either. So......besides an cat upgrade which is nessesary I dont see any benefits of camming/headers and retuning for that small of gains.

 

[Vinnie_B]

You shouldn’t mess with your exhaust. It’s against the law.

Are you fibbing me sir.........

 

[Vinnie_B]

You shouldn’t mess with your exhaust. It’s against the law.

Yes..... @Tezz500 You can rub in your catless KOOKS header install.......and YES.......I will be FK'ing Jealous..........lol man.....

 

[Tezz500]

Yes..... @Tezz500 You can rub in your catless KOOKS header install.......and YES.......I will be FK'ing Jealous..........lol man.....

Catless exhaust is against the law. I would NEVER do such a thing….

 

[1 Alibi 2]

Makes sense man I just don’t think it’s worth the effort. On your car where we live I’d hang that stock catted pipe on the wall. Keep it just in case when you move but even then you’re better to swap it on for inspection then back off.
These engines are expensive and cats on a modded boosted car with a stock motor (your SS) and cats are nothing but a liability to me. Good luck I actually think those high flow aftermarket cats look great but I’d personally only consider them if it was my last resort.
-J

I guess @ some power level, not mine, they may be a liability.
I had " high flow " cats on my 11, Kooks, they threw codes. Had to switch to their " green " cats to get through N.J. inspection. That car has over 20K miles now, although not considered high hp now, ( 776w ), the cats have never been an issue..
.

.

 

[Vinnie_B]

Most CATS are rated for differnt power ratings and are designed/manufactured differently. KOOKS green, and there New Green H.O look like great quality product options for ppl. As with any CAT they need to be changed out and replaced. Monitored for failure for sure if your putting out some decent power! I personally Datalog everything for changes.....thats me. As I said in another thread. As they force EV on us, expect your emissions to get stricter. So.......if your using headers and going catless by choice.........enjoy while you can.

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[biminiLX]

I’m not saying you can’t have success with high flow cats it is just an expensive component that I still would want to eliminate as a common failure point. At least for the way I use my cars that is my opinion. When you talk to development engineers it’s always trying to get the cats to live at high power levels, at least as recent as Hellcat and GT500 cars. So if modding and racing the vehicle it’s not my choice.
Your setup should work great but how do you know when the cats should be replaced? Talking aftermarket high quality cats for an 800hp application.
-J