Civic EG

has anyone ran a gutted cat before .... if so:

how much louder did it get?
did it make any ratty noise when it got louder?
fuel efficency?
power?

hatchie wrote:has anyone ran a gutted cat before .... if so:

how much louder did it get? ALOT
did it make any ratty noise when it got louder? VERY RHASPY NOISE
fuel efficency? NO DIFFERENCE
power? NO DIFFERENCE

I drove civics that had a test pipe (pretty much the same as a gutted cat) and posted my answers in caps above.

There's no advantage to gutting a perfectly good cat.

teal_dx wrote:

hatchie wrote:has anyone ran a gutted cat before .... if so:

how much louder did it get? ALOT
did it make any ratty noise when it got louder? VERY RHASPY NOISE
fuel efficency? NO DIFFERENCE
power? NO DIFFERENCE

I drove civics that had a test pipe (pretty much the same as a gutted cat) and posted my answers in caps above.

There's no advantage to gutting a perfectly good cat.

Well his cats completely clogged or so i beleived from last nights call thats what i inferred from the whole this and plus his cat is aftermarket and was welded inline by a shop....so he really cant just unbolt and throw another one in there....

yeah ohn my father took it off and it completly broken apart inside

and crap i dont want my car loud or have a tin can f'ing sound to it ugh ill buy a new one if i have that sound!

hatchie wrote:yeah ohn my father took it off and it completly broken apart inside

and crap i dont want my car loud or have a tin can f'ing sound to it ugh ill buy a new one if i have that sound!

It dosent sound too bad but yea it will be a bit loud but yea most likely you will want to get another one put in....

as long as you have a resonator in your exhaust (one is there stock) it's not too bad, i ran without a cat for about a year and a half, and it's no where like driving with a fart can

my cat was the last piece of back pressure i had .... i have straight pipe all the way back

all of my exhaust is 2.25 piping the res was takin out when i got it and now the cat is gutted

i hope it doesnt sound like crap

i will absolutly not be a fart can ricer wannabe

hatchie wrote:my cat was the last piece of back pressure i had .... i have straight pipe all the way back

all of my exhaust is 2.25 piping the res was takin out when i got it and now the cat is gutted

i hope it doesnt sound like crap

i will absolutly not be a fart can ricer wannabe

unless your boosted and didn't want to buy a new exhaust larger than 2.25", why would you want straight pipe all the way back? Not even a muffler?
If the sound somehow didn't bother you before, then now isn't going to be much worse.

no sry i do have a muffler i forgot to say that ....

right now my car you can barley hear it until i step on it

which is exactly what i want

the header is 2.25 and the cat is gutted now and res is gone

muffler is dynomax 2.25 inlet and outlet with 2.5 tip

thats my whole exhaust system sry for incorrect info

I recently gutted the cat because it was clogged ... and it makes it have a funny noise at like 3k and it smells bad when i get done running it.
with a stock header and GReddy evo2 exhaust

Okay, heres the deal

1. If you have a fully stock exhaust and you remove/gut/get a cat delete pipe, it will be SLIGHTLY louder.

2. If you have a catback with header etc, it will make it quite a bit louder, and also make it raspy at 3000+ rpm, under that and it sounds pretty good.

As for power, cat deletes are known for adding a couple horses (2-3) when used with an aftermarket exhaust.