custom exhaust system.. cat or no cat
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SoCal tC Club
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Scion Evolution
Joined: May 2004
Posts: 1,947
From: Irvine, CA
tats the dilema...
if i put on a hi-flow cat... woud i lost that much HP? i mean smog tickets arent cheap, espeically in CA
but there is also a silencer for the muffler so i can stay quiet and unnoticed to cops....
im really stuck on this...
hi-flow cat with lost of a little hp = legal
no cat with HP gains but use silencer to go unnoticed and hope not a smog ticket = illegal
if i put on a hi-flow cat... woud i lost that much HP? i mean smog tickets arent cheap, espeically in CA
but there is also a silencer for the muffler so i can stay quiet and unnoticed to cops....
im really stuck on this...
hi-flow cat with lost of a little hp = legal
no cat with HP gains but use silencer to go unnoticed and hope not a smog ticket = illegal
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ScionERA
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Posts: 132
honestly, the silence won't silence it to the point like stock so you would still get noticed! I got pulled over once with a silencer on my muffler on!! for modified exhaust!!
keep the cat! the power gains are minimal and you will only get it up around 4000RPM while almost half of the torque at below 3000rpm will be gone!! not worth it unless you are dragging for quater miles all the time!!
keep the cat! the power gains are minimal and you will only get it up around 4000RPM while almost half of the torque at below 3000rpm will be gone!! not worth it unless you are dragging for quater miles all the time!!
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ScionERA
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Re: custom exhaust system.. cat or no cat
Originally Posted by hahaitzskippy
univeral muffler + 1.75 inch mandrel bends + hi-flow cat
or
univeral muffler + 1.75 inch mandrel bends - cat
or
univeral muffler + 1.75 inch mandrel bends - cat
our stock OEM pipes are already 1.75, i would suggest a 2"!! otherwise you won't notice much gains! either way!! TRUSTME talking from experience here!
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Re: custom exhaust system.. cat or no cat
Originally Posted by cseika
Originally Posted by hahaitzskippy
univeral muffler + 1.75 inch mandrel bends + hi-flow cat
or
univeral muffler + 1.75 inch mandrel bends - cat
or
univeral muffler + 1.75 inch mandrel bends - cat
our stock OEM pipes are already 1.75, i would suggest a 2"!! otherwise you won't notice much gains! either way!! TRUSTME talking from experience here!
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Joined: Jan 2005
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From: Long Island, NY
Originally Posted by jrv2000
your not going to miss the hp that you loose from the cat, you will however miss the money that you will pay if you get ticketed for not having one.
John
John
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Joined: Dec 2004
Posts: 33
From: Atlanta, GA
Tampering with catalytic converters falls under federal EPA regulations.
It's a $2,500 fine for the person who removed the cat and a second degree misdemeanor to knowingly drive a car with a tampered cat on public roads.
It's a $2,500 fine for the person who removed the cat and a second degree misdemeanor to knowingly drive a car with a tampered cat on public roads.
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Joined: Jan 2005
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From: Long Island, NY
Originally Posted by Daemon1313
Tampering with catalytic converters falls under federal EPA regulations.
It's a $2,500 fine for the person who removed the cat and a second degree misdemeanor to knowingly drive a car with a tampered cat on public roads.
It's a $2,500 fine for the person who removed the cat and a second degree misdemeanor to knowingly drive a car with a tampered cat on public roads.
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Posts: 96
2.75 tubing is way to big for this engine. 2.5 is almost to big. If you are running a turbo it would be ok. I used to run a straight pipe on my Integra before and after I turboed it and it did make more horsepower in both occasions. You might be able to remove the heat shield from you cat and weld it to the new pipe making it appear you have a cat, or find a burn out old cat from a muffler shop and knock out all the catalyst inside of it Expect a even louder exhaust if you remove the cat though.
