REAL High-flow cat
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Joined: Mar 2005
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From: Cleveland, OH, USA
REAL High-flow cat
I'm looking for a high-flow cat for my '92 H23 vtec. All I can find are testpipes, but I have to be able to pass emissions. I want to do it right, interested more in quality than the cheapest I can get; within reason of course.
-I've been searching, but keep getting error that the search server is down.
TIA
-I've been searching, but keep getting error that the search server is down.
TIA
Honda-Tech Member
Joined: Aug 2004
Posts: 2,549
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From: Oxford, UK, UK
Re: REAL High-flow cat (zacdaddy77)
You can't pass with carsound cat????
Anyway I have an OEM 93 civic ex cat .....100k miles on it...functioned fine...swapped it out for a 2.25'' carsound....
I'll sell it for 25+ shipping
Anyway I have an OEM 93 civic ex cat .....100k miles on it...functioned fine...swapped it out for a 2.25'' carsound....
I'll sell it for 25+ shipping
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From: US
Re: REAL High-flow cat (_gurusan_)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by _gurusan_ »</TD></TR><TR><TD CLASS="quote">You can't pass with carsound cat????
</TD></TR></TABLE>
nope, failed smog with it, so did 2 of my other friends.
EDIT: this is coming from boosted cars tho
</TD></TR></TABLE>
nope, failed smog with it, so did 2 of my other friends.
EDIT: this is coming from boosted cars tho
All cats are the same, test pipes aren't cats. Legal Hi-Flow cats are just normal cats with an upped price that say "High flow" on them. Illegal hi-flow cats are pipes made to resemble cats. Trust me dude, I've been a safety/emissions (smog) tester for five years.
Joined: Dec 2003
Posts: 151
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From: Simi Valley, Ca, USA
Re: (h2392si)
i know this is a month late post but i thought this was pretty interesting when i read it. Ill probably get flamed for this but... i was reading the latest issue of modified magazine *gasp* and stumbled across their "The Real JDM" column for the month which just so happened to focus on "green power" and primarily hitting on high flow cats and quiter exhausts.
Apparently some of the fastest time attack cars such as the Autech Tsukada BNR34 GT-R and Top Secrets V35 widebody Skyline coupe are completely street legal. The Autech GT-R for example produces 0 Hydro carbon parts per million and has 0% carbon monoxide rating. Unfortunately the cats they are using utilize platinum to extract the most power per hydrocarbon and platinum isn't exactly cheap. Also noted is that the APEX super catalyzer is "one of the leaders" in the japanese market. It uses 130 cells per square inch as compared to a stock cat which will use somewhere between 400-600 c/si and this lower number of cells supposedly improves exhaust flow resulting in an increase in power.
Now what id really like to know is what aspects of a cat cause low HC ppm and CO% numbers. hope this helps someone in some way
Apparently some of the fastest time attack cars such as the Autech Tsukada BNR34 GT-R and Top Secrets V35 widebody Skyline coupe are completely street legal. The Autech GT-R for example produces 0 Hydro carbon parts per million and has 0% carbon monoxide rating. Unfortunately the cats they are using utilize platinum to extract the most power per hydrocarbon and platinum isn't exactly cheap. Also noted is that the APEX super catalyzer is "one of the leaders" in the japanese market. It uses 130 cells per square inch as compared to a stock cat which will use somewhere between 400-600 c/si and this lower number of cells supposedly improves exhaust flow resulting in an increase in power.
Now what id really like to know is what aspects of a cat cause low HC ppm and CO% numbers. hope this helps someone in some way
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