.:HSTuners::

Grip72 · 03-04-2003, 07:55 PM

What exactly is catback exhaust? And when u guys get your exhaust done from your headers to the tail pipe, do u just get rid of the resonator and catalytic converter altogether or what???

Leets · 03-04-2003, 08:06 PM

A cat-back exhaust is an exhaust system that replaces everything from the catalytic converter all the way out. It is possible to replace every part of your exhaust system with straight through piping, however it usually sounds like cr*p. It's also illegal to remove the catalytic converter unless it's not functioning properly and is being replaced.

ebpda9 · 03-04-2003, 08:07 PM

well a cat back is replacing all your exhaust from your catalytic converter to the tail pipe. the catalityc converter remains. does this andswer your question ?

03-04-2003, 10:49 PM

When i do the whole exhaust, i usualy refer to the headers, and the a cat back system....tho you can buy racing catalitic converters....which is basicaly a legal strait through pipe....(i think, correct me if i'm wrong bout that)

94_AcCoRd_EX · 03-04-2003, 11:05 PM

Quote:

Originally posted by OPAKRACING
When i do the whole exhaust, i usualy refer to the headers, and the a cat back system....tho you can buy racing catalitic converters....which is basicaly a legal strait through pipe....(i think, correct me if i'm wrong bout that)

I believe its only legal to change out your cat after 100k miles or if a mechanic certifies that it is damaged and needs replacing.

TeriyakiBroccoli · 03-04-2003, 11:35 PM

uh. really?

wonder why that'd be.

But I do not think a racing cat just is a gutted cat. I'm.. almost positive that they do have some -emission- reducing properties that would keep the car somewhat NEAR legal.

I will run a hi-flo cat, but at the track, just the downpipe

94_AcCoRd_EX · 03-04-2003, 11:40 PM

I read that it had to do with some emissions standards or something like that... I'll try to find a link

Grip72 · 03-04-2003, 11:55 PM

oh..i think i remember one of the mechancis at work saying you dont' need a cat if your car was made after1990 or something..ic annot remember tho..hmm

armyguy5 · 03-05-2003, 12:32 AM

yea i dont remeber the year law...it's kinda like the tint law...it's there but no one knows about it. ...my truck is straight piped cuz it's a 1978 and it's loud as sh!t. I've seen the gutted catalytic converters i beleive made by toucan industries (aka ractive).

chris

94_AcCoRd_EX · 03-05-2003, 11:21 AM

Quote:

Originally posted by Accord17
oh..i think i remember one of the mechancis at work saying you dont' need a cat if your car was made after1990 or something..ic annot remember tho..hmm

I'm 100% sure he's wrong. You need a cat to be street legal. I guess old classic cars might be exceptions, but cars after 1990 definitely need them.

ford50forlife · 03-05-2003, 01:42 PM

Quote:

Originally posted by 94_AcCoRd_EX
I'm 100% sure he's wrong. You need a cat to be street legal. I guess old classic cars might be exceptions, but cars after 1990 definitely need them.

the hell they do

03-05-2003, 02:03 PM

Yeah you do need a cat to be street legal....and the "straight pipe" somebody referred to is called a testpipe and its basically just a straight pipe of the same diameter as your exhaust where the cat should be (illegal). Racing cats (i.e. pacesetter, random tech) arent just gutted, they still eliminate the required amount of pollutants but just flow a lot better....

03-04-2003, 07:55 PM	#1
Grip72 Registered User Join Date: Apr 2002 Location: Calgary, AB Canada Age: 40 Posts: 2,962	Cat-back exhaust..what is it? What exactly is catback exhaust? And when u guys get your exhaust done from your headers to the tail pipe, do u just get rid of the resonator and catalytic converter altogether or what???

03-04-2003, 08:06 PM	#2
Leets 2nd Gear Join Date: Feb 2003 Location: Over The Influence Posts: 158	A cat-back exhaust is an exhaust system that replaces everything from the catalytic converter all the way out. It is possible to replace every part of your exhaust system with straight through piping, however it usually sounds like cr*p. It's also illegal to remove the catalytic converter unless it's not functioning properly and is being replaced. __________________ Hey, close the FAWKING door, Jackazz!!!

03-04-2003, 08:07 PM	#3
ebpda9 Repost Wagon Join Date: Dec 2001 Location: over here Age: 44 Posts: 17,266	well a cat back is replacing all your exhaust from your catalytic converter to the tail pipe. the catalityc converter remains. does this andswer your question ? __________________

03-04-2003, 11:35 PM	#6
TeriyakiBroccoli 5th Gear Join Date: Sep 2002 Location: Orange County, Southern California Age: 39 Posts: 1,490	uh. really? wonder why that'd be. But I do not think a racing cat just is a gutted cat. I'm.. almost positive that they do have some -emission- reducing properties that would keep the car somewhat NEAR legal. I will run a hi-flo cat, but at the track, just the downpipe __________________ everyone loves the turbizzim.

03-04-2003, 11:40 PM	#7
94_AcCoRd_EX Insomniac Moderator Join Date: Aug 2001 Location: OR Age: 44 Posts: 11,142	I read that it had to do with some emissions standards or something like that... I'll try to find a link __________________ 1994 Accord EX coupe --Need hosting for your pics on HST? PM me...--

03-04-2003, 10:49 PM	#4
OPAKRACING Posts: n/a	When i do the whole exhaust, i usualy refer to the headers, and the a cat back system....tho you can buy racing catalitic converters....which is basicaly a legal strait through pipe....(i think, correct me if i'm wrong bout that)

03-04-2003, 11:55 PM	#8
Grip72 Registered User Join Date: Apr 2002 Location: Calgary, AB Canada Age: 40 Posts: 2,962	oh..i think i remember one of the mechancis at work saying you dont' need a cat if your car was made after1990 or something..ic annot remember tho..hmm

03-05-2003, 12:32 AM	#9
armyguy5 3rd Gear Join Date: Oct 2002 Location: allendale, mi Age: 42 Posts: 568	yea i dont remeber the year law...it's kinda like the tint law...it's there but no one knows about it. ...my truck is straight piped cuz it's a 1978 and it's loud as sh!t. I've seen the gutted catalytic converters i beleive made by toucan industries (aka ractive). chris __________________ Cold Air Intake, Front Strut Bar, MTX Thunder 6000 10", Gunmetal Altezza Tail Lights, Short Throw Shifter, Factory Side Skirts and Rear lip, JDM front Lip, Thermal R&D stealth exhaust, 16" Rota Slipstreams in Bronze, Alpine CD/MP3/WMA/XM RADIO, Legacy L7M in car video

03-05-2003, 02:03 PM	#12
get_probed Posts: n/a	Yeah you do need a cat to be street legal....and the "straight pipe" somebody referred to is called a testpipe and its basically just a straight pipe of the same diameter as your exhaust where the cat should be (illegal). Racing cats (i.e. pacesetter, random tech) arent just gutted, they still eliminate the required amount of pollutants but just flow a lot better....

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