what is a cat back test pipe for?

 

replace a restrictive cat convertor. its basically an empty tube with flanges to eliminate the catalytic conveter guts

 

for a-holes that like to pollute excess fumes and noise on their DD.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dangthemang &raquo;</TD></TR><TR><TD CLASS="quote">for a-holes that like to pollute excess fumes and noise on their DD. </TD></TR></TABLE>

Just cause you guys can't pass emissions with no cat is not our fault

 

I pass emissions fine. But I guess that's because i'm a state inspector

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by OneFire &raquo;</TD></TR><TR><TD CLASS="quote">

Just cause you guys can't pass emissions with no cat is not our fault </TD></TR></TABLE>

lol

or just cause you guy's have to take emissions, it's not our fault i &lt;3 the boonies

 

Go to the junk yard, buy a old cat for your car. Knock the inside out it with a pipe. Install it on your car.

But you didn't hear that from me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1992Si &raquo;</TD></TR><TR><TD CLASS="quote">Go to the junk yard, buy a old cat for your car. Knock the inside out it with a pipe. Install it on your car.

But you didn't hear that from me.</TD></TR></TABLE>
hahaha hear what?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1992Si &raquo;</TD></TR><TR><TD CLASS="quote">Go to the junk yard, buy a old cat for your car. Knock the inside out it with a pipe. Install it on your car.

But you didn't hear that from me.</TD></TR></TABLE>

most junk yards do not sell old cats. there is more money in melting them down then there is re-selling them used. plus i am sure they can't re-sell them because it's a part of your emissions and all that stuff should be in good working order. not old.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dividedas1 &raquo;</TD></TR><TR><TD CLASS="quote">

lol

or just cause you guy's have to take emissions, it's not our fault i &lt;3 the boonies</TD></TR></TABLE>

X2 i have no emission's here . and only have to get the car inspected one time and thats when u first get it titled in your name. its nice

 

Dont listen to 92si, he doesnt know anything about fast cars, or cars in general!!
I kid...i kid.

Hehe. 92si=D-series pimp in action!!

 

They're for tuning. When you start a tune from scratch, you run rich with retarded timing. That will destroy a cat converter in short order. Once you get the tune dialed in, you put the cat back on. If you drive on the street, then there is absolutely no gain from removing the cat converter. Only very serious, dedicated race cars benefit and then mainly because their tune would destroy the cat anyway.

No matter what state you live in, you get caught w/out a catalytic converter, the EPA will seize your car and crush it and there's absolutely nothing you can do. Everyday ricers cars are being crushed. Even some very high end cars. You can find videos of that on youtube and elsewhere.

Some people think they are sneaky and they hollow out a cat. Not only does this cause more restriction than having a good cat, but the highway patrol is smart enough to tap on it. It's plainly obvious the difference in sound between hollowed and functional cats.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by baller status &raquo;</TD></TR><TR><TD CLASS="quote">No matter what state you live in, you get caught w/out a catalytic converter, the EPA will seize your car and crush it</TD></TR></TABLE>

blah wrong. very very wrong. in areas such as mine where alot of vehicles registered are farm vehicles we do not have to take emissions. there is no inspection of our cars at any time. so i guess my township of Illinois is the exception to your rule... (even though im sure there are more)

hes right though about why they are used and how its kind of pointless on our cars, unless your turbo'd then you might actually notice something other then a bad smell and loud noise.

 

get a high flow cat the same effect, but not so loud and annoying and you can pass inspection

and yes i know its dyno proved for more power with a test pipe but seriously whats 2-3 hp

and the law is different for every state there's no point to argue over it