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Old 02-25-2008, 03:27 PM
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cats

ok so lately i have been researching cats because i need a new one... what i found were regular cats and these things called test pipes... what the difference and which is still gonna let me get my car inspected...
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Old 02-25-2008, 03:28 PM
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a test pipe is just a hollow tube that repalces the cat. you will fail inspections with that.
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Old 02-25-2008, 03:31 PM
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o alright that makes sense
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Old 02-25-2008, 03:39 PM
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what would be a good high flow cat
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Old 02-25-2008, 03:54 PM
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lol when i saw this i thought this was really about a cat lol, anyway i heard all cats pull the same, some maybe a slight better then others, but they all turn out to be the same, but then again i could've heard wrong
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Old 02-25-2008, 04:03 PM
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Quote:
Originally Posted by ImPorTuNeRdJ View Post
lol when i saw this i thought this was really about a cat lol
X2...LOL...but if you want a replacement get OEM cat or ebay.
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Old 02-25-2008, 04:54 PM
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i heard different....that high priced cat, the random tech high flow sucks....its like what $200 bucks, everbody that i know bought it said they wish they never had, cuz its too expensive for like little to no gains, and is about the same as the oem cat.....i bought the virbrant high flow cat for about $90, flows better than oem, and is lighter too...i gained about 8whp overall "including my v2, header, and cat-back", but its your call on how much you want to spend on a high flow cat....
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Old 02-25-2008, 04:57 PM
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vibrant huh? i might have to check it out....
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Old 02-25-2008, 05:03 PM
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Here are some really good cats that I recommend.
















And this one... is the one that comes the highest recommended:
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Old 02-25-2008, 05:05 PM
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i would say just get a test pipe and keep it on until inspections then swap it to stock, then swap it back afterwards...its only 6 bolts
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Old 02-25-2008, 05:08 PM
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Originally Posted by Myles88 View Post
i would say just get a test pipe and keep it on until inspections then swap it to stock, then swap it back afterwards...its only 6 bolts

the 6 hardest bolts to take off on the entire car, mind you

and i was expecting BadMofo's post to be the most intelligent, cuz he worked @ a cat-factory....
but instead, i wanna stare at the last picture for hours instead of studying (tedd, keep it in your pantelone's)
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Old 02-25-2008, 05:11 PM
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but i have Megan cat...it seems to do the purpose
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Old 02-25-2008, 05:15 PM
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[QUOTE=twokexlv6coupe;112011]the 6 hardest bolts to take off on the entire car, mind you QUOTE]

Haha..true, its easier if you take off the heatshield and leave it off..

but thats why i love indiana, no emissions, no worries!
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Old 02-25-2008, 05:24 PM
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Quote:
Originally Posted by twokexlv6coupe View Post
the 6 hardest bolts to take off on the entire car, mind you

and i was expecting BadMofo's post to be the most intelligent, cuz he worked @ a cat-factory....
but instead, i wanna stare at the last picture for hours instead of studying (tedd, keep it in your pantelone's)
Oh fine... I'll post something more on topic lol.

Look... I can't speak for all the different cat manufacturers, because I only worked for one of them... but it really is simple. I'm gonna tell you what most cats are made out of...

Metal, platinum, ceramic, and fiberglass... it's the simple.

A high flow cat is a high flow cat, nothing more, nothing less... You're not gonna gain a lot of whp with a high flow cat vs a oem cat... you're also not gonna gain a lot of whp with a test cat vs a oem cat...

The whole point is to allow your car to breath better... period. It'll allow your exhaust to flow more (hence high flow). It will allow you to unlock more horsepower when used in combination with your other parts, but you're not gonna be bolting/welding on major hp with a high flow cat alone...

Like I said... a Cat is a hollow metal can, filled with a catalyst substrate (which looks like a honeycomb) made out of platinum and ceramic that most people call a honeycomb, rapped in fiberglass that hardens the first time you fire your car up (it hardens and holds the honeycomb(s) in place)... High flow cats have bigger/more holes in the honeycomb(s), OEM have less/smaller holes... That simple. They really are all created more or less equally... Most cat companies even use the same distributor for the honeycomb (substrate) so they really are all created equally...

The cost of the cat should only be affected by the quality of the construction. Good welds, good material (stainless, or high quality mild steel), and good quality control/packaging and shipping (the honeycombs are very very delicate... and if you break it... you need a new cat... that simple). Also... whether or not the cat is direct fit or univeral will affect the price greatly... A majority of high flow cats are universal style (pipe nipples on each end... requiring the welding of flanges on to the ends, and O2 "boss's" onto the can).

I can only speak for the quality of the company that I used to work for (eastern catalytic)... but I can not in good conscience recommend them anymore. When I worked there, they made a good quality product with beautiful welds (mostly because I did a good chunk of the welding myself =P). But I recommended them to someone on here.. and when they got it, the welds looked terrible and the O2 boss was angled badly and he had a real hard time fitting his o2 sensor. so I can't recommend Eastern Catalytic in good conscience.

But seriously... they all do the same damn thing... don't overpay expecting to make more hp/flow better than the cheaper ones....

However, don't underpay, and expect the thing to look pretty/be made of good quality materials (rust ftl).


Also.. (this goes towards the fact that most of them are the same)... I'd like to note that most of the cats that are on your car from the factory, most of the cats that you buy aftermarket, and most of the cats that come on aftermarket full exhausts... are all made by the same handful of manufacturers...

For instance... Eastern (when I worked there at least), sold our cats in bulk (I mean THOUSANDS a day) to manufacturers (i.e. Ford, Chevy, etc...), local muffler/exhaust shops, aftermarket companies (I believe pacesetter uses re-branded eastern converters for example), even the damn US Postal Service (Mac Motors was one of our biggest customers... they make/maintain the USPS trucks). It's kind of like tires... even though there are a bunch of different "brands".. they all come from the same handful of factories. I think in the US... there are only a small handful big players in the cat industry (eastern being the second biggest).

Last edited by BadMofo; 02-25-2008 at 05:30 PM.
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Old 02-25-2008, 05:25 PM
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well what i have is a removed resonator with a test pipe in the resonators spot instead of the cat... my buddy has a removed cat n gets pulled voer all the time...idk if cops pull u over around there for excessivly loud exhaust...put yea u can get a test pipe from the same piping ur exhaust is made from n its jus bolt on very simple... having a high flw cat should keep u in inspection with no problem but i would jus get a cheap test pipe made jus incase...
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