.:HSTuners::::Hondas Wanted:: |
02-09-2002, 01:09 AM
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#1 |
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High Flow Catalytic
Hello! I was wondering what a High Flow Catalytic will do in a I/H/E setup?
The Catalytic is the only thing thats stock and I was wondering if I got a high flow Cat what would basically happen in terms of performance and possibly sound?? Thanks in advance =) |
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02-09-2002, 01:11 AM
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#2 |
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Insomniac Moderator
Join Date: Aug 2001
Location: OR
Age: 44
Posts: 11,142
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Just like doing your exhaust, it lets the system flow more air. You will see some minor gains, and an I/H/E setup isn't complete without it. I thought about getting one, but I couldn't find one for less that $175... do you know where to get a cheap one?
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1994 Accord EX coupe --Need hosting for your pics on HST? PM me...-- |
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02-09-2002, 01:58 AM
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#3 |
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honestly the change is so minute that it isnt worth it... its normally done when you get the whole setup done so its way cheaper for labour but even then the part itself is way over priced for what it is.....
if you want the same thing esp depending on where you about emmission laws so the cops dont bust you, is that you take the existing cat on the car and bang out the cement thingy inside.... poof instant hi flow cat that looks stock!!! BUT heres the whole problem.... 95% of the time you take off your cat you will fail emmissions testing for sure... and the fines are not pretty.... but just so you know... funny thing is tho... im taking my chances cuz i banged all mine out.. so when cops harrass me im like but look its stock!!! ahahah even tho its not really there.....  |
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02-09-2002, 02:14 AM
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#4 |
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Insomniac Moderator
Join Date: Aug 2001
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What kind of sound change was there when you gutted the stock cat? Did it make the sound raspy at all?
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1994 Accord EX coupe --Need hosting for your pics on HST? PM me...-- |
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02-09-2002, 03:18 AM
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#5 |
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no it doesnt... not a noticeable sound at all.... maybe kinda sounding more free flowin?!?! i dunno but that might just be in my head.. hahaha.. oh well... it'll only start sounding raspy or kindy poppy if you completely remove the cat and put a straight pipe thru as well as getting rid of the flex pipe... it really sounds bad when those 2 are removed....
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02-09-2002, 12:26 PM
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#6 |
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Insomniac Moderator
Join Date: Aug 2001
Location: OR
Age: 44
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Cool, thanks for the reply.
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1994 Accord EX coupe --Need hosting for your pics on HST? PM me...-- |
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02-09-2002, 01:40 PM
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#7 | |
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Repost Wagon
Join Date: Dec 2001
Location: over here
Age: 44
Posts: 17,266
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Quote:
http://www.carparts.com/parts/newsea...rtnum=NONE&dc=
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02-09-2002, 04:16 PM
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#8 |
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THE GENERAL
Join Date: Aug 2001
Location: Earth (usually)
Age: 43
Posts: 5,698
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Performance wise, your aftermarket exhaust is useless without a high flow cat.
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HondaStyle.com Babysitter's Club Member #0  Soon to be >Dr Max Immuh< |
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02-09-2002, 06:51 PM
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#9 |
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Insomniac Moderator
Join Date: Aug 2001
Location: OR
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Do you think anyone would ever know if I gutted my stock cat? There is no emissions testing here, and I don't think anyone else would find it, right?
Maybe I'll just say it was like that when I bought it  I'm seriously thinking about doing this now.
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1994 Accord EX coupe --Need hosting for your pics on HST? PM me...-- |
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02-10-2002, 02:16 AM
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#10 |
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u should be OK if u gut it or drill a hole through it, over on clubsi.com in the sale forum someoe is selling a high flow cat for $50
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02-10-2002, 03:28 AM
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#11 | |
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Quote:
unless there is emmision testing... theres no way of authorities ever finding out that its "not there".... its only a lil secret that you can keep..... you dont have to find anyone to do it... you can do it yourself... besides you get the exact same result as tho you bought a high flow cat.... and it looks stock so cops cant bust you.... i think you should do it... i did to mine... hehehe |
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02-10-2002, 05:20 AM
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#12 |
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Do all GReddy exhausts come with complete cat-back systems that are street legal?
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02-10-2002, 01:51 PM
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#13 | |
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Insomniac Moderator
Join Date: Aug 2001
Location: OR
Age: 44
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Quote:
I believe Greddy's exhausts are all street legal. They come with "cat-back" systems, meaning that they replace everything from the cat--->back, and leave the stock cat alone. If you want a high-flow cat, you'll still have to buy one.
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1994 Accord EX coupe --Need hosting for your pics on HST? PM me...-- |
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02-10-2002, 03:50 PM
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Quote:
how did you do it? |
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02-10-2002, 08:31 PM
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Repost Wagon
Join Date: Dec 2001
Location: over here
Age: 44
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Quote:
here in oh nobody asks you to see the cat. if u ask the muffler shop to remove it you get a 2500 fine. if u go for the emissions check and they see that you do not have a cat they will refuse to do the testing. no police dood will want to see the cat.
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02-10-2002, 09:16 PM
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#16 |
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i asked the shop to bang it out for me..... they used one of those rubber malots to bang it out.... but i believe they also put something in it to help it break apart..... i'll find out how it was done.. then i'll repost again how to do it....
i was almost busted in the summer cuz the cop did this retarded inspection of my car. made me pop the hood and everything.... and asked me about my exhaust... blah blah blah.... but to make a long story short.. he did ask me if i still had my cat on.... and i said yes.. you can see for yourself.... so i showed him... and he did let me go.... |
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02-10-2002, 09:17 PM
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#17 |
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1st Gear
Join Date: Feb 2002
Location: KY
Age: 45
Posts: 66
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I wish I read this yesterday!!!
MAN!,, I replaced the cat-back on my accord yesterday (2-9-02), and I debated weither or not to gut the cat. I had such a hard time getting the back three bolts off. That when the front two did'nt come off I said the heck w/ it. I was curious though about the architecture of the inside of the cat. Is there any metal inside, or is it just that honey-comb stuff inside? Could you take a broom handle and knock it out? Could it be done,, in theory??
Also, for anyone that cares, I put an APEX WS cat-back on, and it sound very stock. Really quite, but noticible gain in power. |
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02-10-2002, 09:19 PM
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#18 |
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Insomniac Moderator
Join Date: Aug 2001
Location: OR
Age: 44
Posts: 11,142
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Yeah, he couldn't tell w/o you removing and showing him the cat, right? That would have sucked to get a huge fine for a couple hp gain
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1994 Accord EX coupe --Need hosting for your pics on HST? PM me...-- |
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02-11-2002, 12:08 PM
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#19 |
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THE GENERAL
Join Date: Aug 2001
Location: Earth (usually)
Age: 43
Posts: 5,698
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I wouldnt make any holes in it..
Not for any performance or legal issues, but simply for environmental reasons. Oh and without the catalyser, the exhaust smel is very different.. bad... A slightly informed cop, mya be able to smell it..
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