i am thinking of getting rid of cat converter cause i think it restricts the air flow and thinking of replace it with a test pipe.is it going to be very loud without cat conveter cause i am running with stock intermediate pipe with oem s2000 rear end muffler with dc ss header.
any suggestion?

 

It will be louder, yes.

Just smash out the guts of the converter and bolt it back up if you want to save some time/money.

 

well if you're from california good luck with that test pipe - so yea, id knock the guts out of it and buy an o2 sensor simulator this way you can try and get away with it

 

Just put a test pipe on it. It wont be a whole lot louder. Just a tad than what it may be now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crazyguy &raquo;</TD></TR><TR><TD CLASS="quote">i am thinking of getting rid of cat converter cause i think it restricts the air flow and thinking of replace it with a test pipe.is it going to be very loud without cat conveter cause i am running with stock intermediate pipe with oem s2000 rear end muffler with dc ss header.
any suggestion? </TD></TR></TABLE>

your better off with a less restrictive cat. hollowing out your current one or gettin a test pipe is

1. going to make you car sound like crap.
2. not allow you to pass emissions in california (not sure if a free flow applies).
3. not going to give that much horsepower.

don't listen to these goons, if you only have bolt ons, then doing this is useless.

 

putting on a test pipe isnt going to do **** but lose low end torque, which you have close to none of, but do what you want

 

Putting on a test pipe is equivalent to putting on a turbo, they both make your car run 12s minimum.

 

the stock cat is not a major restriction until the engine is moving lots of air

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jizzmaster Zero &raquo;</TD></TR><TR><TD CLASS="quote">
Just smash out the guts of the converter and bolt it back up if you want to save some time/money.</TD></TR></TABLE>

way to give out terrible advice

 

if you really want a test pipe sell your cat and make your own pipe... you will end up making money off of that... except i see your from ca which will make it impossible to pass a smog... hahaha cali is so lame

 

just putting straight pipe with the s2000 exhaust will give you a good amount of back pressure with a good sounding exhaust not annoying exhaust

 

DONT DO IT! since i dealt with this same situation and it was the worst decision i made. my cat was gone so decided to put a test pipe.

- i hated the way my car sounded
- car felt like crap when i was driving
- car smelled like exhuast and i hated it
- i had a little bit of exhuast leak
- u wont pass smog

now i have a cat on there and it runs allot better, im not embarrassed no more because my car doesnt have the ugly raspy sound to it when i hit 3k rpm. Its now back to a more quieter deep sound.

 

go for the test pipe. the cat is very restrictive. and it will be louder.

 

you never know unless you do it yourself. jus get it and try it out, if you dont like it you can always go back to the regular cat.