Ok this is REALLY buggin me.. I have the 302 5.0 and im lookin into gettin my exhaust done (I have everything stock except a flowmaster muffler) some muffler shops are telling me that I cant take the 2 cats off and only put one in while other shops are telling me i can.... Im completely lost here. I live in an area of TX that DOESNT do emissions testing BUT we came really close one year. IDK whether or not to knock it down to one or just replace both with Magnaflow cats. Im told that the newer cats are more effective than the older ones so one should be enough right?

Someone fill me in here!

Thanks and God Bless!

 

Try giving the Texas Department of Motor Vehicles a call at 1-888-368-4689 and ask them what is legal.

 

Thanks framerboy!

I was actually hoping someone that has just one cat would come in here and post that they get by with just one lol. I mean i know itll pass inspection but IF we were to start emissions testing I dont wanna get screwed over lol

 

It is allowable (& cheaper) to replace the dual Cats w/ a single hi-capacity Cat on f-150's. They should go up in pipe size coming out of the Y connector or Cat life will be decreased & it also increases exhaust flow. I did it on my 87' 302 & my smog test results were very good. If it's legal in California, it's good anywhere in the U.S.!

 

THIS is what i was lookin for! thanks! What size piping would you recommend? Im thinkin 2.5"? and what is considered a hi-capacity cat?

 

Just up from the size coming into the Y. The shop know the right size, but I think 2.5 sounds right. W/ a full flow , non-restricted muffler.

 

I just looked into it and Magnaflow sells a "2 for 1" converter follow this link and let me know what you think!

MagnaFlow Catalytic Converters - 49-STATE & CANADA Catalytic Converters For Trucks, Suv's, American Muscle, Diesel, & Sport Compact Vehicles

 

Any thoughts? Any at all?

 

I have seen many OPs post the same question and ask about that Magnaflow pipe/converter. It's a well made piece and reasonably priced if you shop around. It is designed to fit the factory size exhaust pipe. It also carries a 49-state certification. A win-win situation if you are staying with the stock sized pipes.

 

Looks pretty good to me too!

 

ok thanks guys! I just dont wanna put it on and then get screwed over if (Im praying we dont) we start emissions testing

 

If you remove the cats get a high flow cat and a good straight through muffler.

If you keep the stock cats get a glasspack with a Y on it (torpedo pack). Its the only way to really get any sound with the stock cats.

 

truck getting to hot on s 93 f250 hooked up to a 21 foot boat we might make it out there by nxt year lol