How many cat's
- Thread starter Duro5341
- Start date
notchback
Founding Member
HISSIN50 said:
yeah i was thinking the same thing...tell him 4 total and someone $hits the bed crying that 2 are precats
btw...unless you get a great deal on a stocker from somewhere...you are smog legal w/ just 2 cats . so if you get a hi-flow from any of the numerous exhaust makers...your fine
95COBRA241
New Member
There should 4 (2 per side) as stated above. I think it will be expensive to buy a stock replacement from the dealer, probably more than a new catted H-pipe which will only have 2 cats (1 per side). Check with your performance shops, alot of them have extras around from previous customers who now have "race only" cars. There was a time when you could rent them for $50.00 for emissions.
Daniel50
New Member
2 pre-cat and 2 cats. 2 up by the headers and 2 in the middle of the mid pipe. dont even think about going to the dealer of one lol. unless you wanna spend over 300 dollars. check your emmision standards
MahFiVeOh
Founding Member
Daniel50 said:
I just replaced my stock H pipe with an after market ( 2 cats ) The stocker with "4 cats" went for over 600 bux Canadian.Car sounds a lil different now too
gt40_2003wes
I did sound a wee bit gay there.
notchback said:
So if I get 2 Highflow cats............i'll be ok
I know on our 4.8L in our work truck we put 2 universal cats (good up to 5.9L) and we're fine
I was just gunna run 2 cats, after my full length headers, into 2 mufflers, and out to the tips...........is this ok?
Thanks for all the posts guys
Duro
stang&2Birds
Founding Member
That would be okay from for a tail-pipe only test. Many locations here in the States now also check for the number of cats.Duro5341 said:
The pre-cats are there to heat up quickly during start-up. According to some studies, in big cities the emissions from the first 5 mins accounts for ~30%+ of the emissions from cars. So, there is a requirement that cars pollute only "x amount" in the first "y minutes" from a *cold* start.
Of course, they don't do cold start testing at smog stations. So, by checking the number of cats and the tail-pipe emissions, they can be "pretty sure" that the car is in spec.
So, to summarize again, two cats will pass tail-pipe tests, but will fail some visual tests. Check your local smog laws.
ya, up in Ontario we only have the tail pipe tests
And the car is supposed to be at operating temp, when it goes in, so it's nice and hot
So I think i'll do this, being it has true dual exhaust, no H-pipe
I think I may put a h-pipe in though, just to equalize the pressure
Anyone know how Flowmasters sound on a 5.0L stang with long tube headers, and an H-pipe
Thanks
Cameron
And the car is supposed to be at operating temp, when it goes in, so it's nice and hot
So I think i'll do this, being it has true dual exhaust, no H-pipe
I think I may put a h-pipe in though, just to equalize the pressure
Anyone know how Flowmasters sound on a 5.0L stang with long tube headers, and an H-pipe
Thanks
Cameron
I assume "different" means louder?I understand those stock 4 cats keep things quieter than the after market high flow 2 cat systems.MahFiVeOh said:I just replaced my stock H pipe with an after market ( 2 cats ) The stocker with "4 cats" went for over 600 bux Canadian.Car sounds a lil different now too
Euphoric306
New Member
- Apr 5, 2004
- 905
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let us know how it sounds 
ill advised
Member
lol Euphoric.
Duro, I ran that setup for a few years and loved it. I always run 3-chamber delta flows and cats which isn't the meanest sounding combo.
Duro, I ran that setup for a few years and loved it. I always run 3-chamber delta flows and cats which isn't the meanest sounding combo.
ill advised
Member
I had magnaflows on my car for about 3 weeks and it just wasn't for me (they sound hot on my neighbors 03 Cobra though). They might be a bit too mellow for what you're looking for.
mustangjoe87
Member
Jeb sucks.bobcatv8 said:God, I'm glad I live in FLORIDA!
No emissions testing at all. Thank you Jeb!!
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