How many cats came on the 89 5.0?
- Thread starter kevsstang
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04sleeper
Founding Member
sirr0bin
New Member
should be 4, one on each side right off the headers, and one more on each side on the underbody of the car before the mufflers
04sleeper
Founding Member
You shouldn't need to buy two more if you buy an H or X pipe with cat's.kevsstang said:
They should be fine with that. As long as you have working converters on the car you should be good to go.
04sleeper
Founding Member
If you haven't decided on what your going to get yet check out these guys. They have great quality, great fitting exhaust pipes.
http://www.vrsexhaust.com/
http://www.vrsexhaust.com/
Don't know what you want to spend, but Bassani makes a stainless substrate hi-flow catted x-pipe one of the Stang mags did a comparison on- difference between no cats and these was single-digit on horsepower loss. Probably $100-150 more than a cheap h-pipe with cats.
Michael Yount
Mustang Master
It's a bit more complex than just the number of cats. Back in the day they had 1-way and 2-way cats. There are 3 emissions components that are controlled - unburned hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx). A 2-way cat catalyzes chemical reactions in the exhaust stream that clean up 2 of the 3 controlled emissions, a 1-way cat catalyzes reactions that clean up the other one. The older cars had 4 cats - on each side there was one 1-way cat and 1 2-way cat in order to clean up all 3 emissions. In later years they developed 3-way cats - a single cat that cleaned up all 3 emissions - V-8 cars with duals equipped with 3-way cats had just one cat per side. So, if you just have to pass the sniffer - a single 3-way cat on each side should do the job. If PA is gonna insist that you have the same number of cats on the car that it came with from the factory, then you need to be certain you have the right type of cats on the car. So you see - you can't just throw any 4 cats on the car - the right type have to be on there to control the emissions.
Thanks mike i should have just asked you from the start. I contacted the garage that i have had the car inspected the past 3 yrs and he said it is just a visual inspection of cars in the county i live in.The car is an 89 will A X or H pipe be sufficient for one of the two and do you know where to get the different kind. Or since it is just visual can i just put any on and just gut them?
remat457
Founding Member
88SC_GT said:i believe the catted x/h-pipes are emissions legal. you shouldn't need to have two more put on. i could be wrong though
The replacement 2 cat's were legal in WA. There was an article on flow of 2 vs. 4 on fordmuscle.com if your curious...
jwzg
Member
kevsstang said:
1) Call the local DOT or "sniff/visual test administrator" (sound's like something out of a Budweiser commercial
) Explain your situation and find out from them directly. Getting advice from this forum (smog laws are different everywhere) is not the best way to find out. You don't have to give personal info when you call. 2) Some state(s) have regulations stating that cats must have a certain number of miles on them before they can be replaced with a new kind. Again, just ask.
Michael, you never cease to amaze me. You must be a writer for howstuffworks.com.
Michael Yount
Mustang Master
jwzg is right - ask the inspectors if a single 3-way can replace the stock 2-cat set up. And then, if you've got to buy them anyway, get a high flow 3-way. They're not that much more expensive than a regular cat, and you won't have to 'gut' them because they flow quite well. If you've got to put them on, might as well have them work if it doesn't cost you any performance.
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