skatanic28

some kid up here at my school gutted his catalytic converter and ran a pipe straight thru it, so that it looks like its there but doesnt restrict the exhaust at all. i was considering doing this but was wondering just how loud is this goin to make my car? im planning on gettin a less restictive muffler too. is this gonna be in the legal db range? this sounds like a good idea to me

Rancid90SE

doesnt sound too slick to me,high flow cats are almost as freeflowing as gutted cats and a lot more legal,from what i heard it gives you a deeper tone,nothing ridiculous..and with a universal muffler..sure less restrictive,but you still have the resonator which is restriction

skatanic28

i wish i could afford a high-flow cat, but im gonna be scrapin just enough money to get a cai and the muffler. any problems with it?

Rancid90SE

get the warpspeed CAI with the Ypipe,from what ive heard,best bang for the buck

skatanic28

thanks for your help
will the warpspeed fit in a 91 SE without a problem, i was lookin at the place racing til i heard about this drilling.

noleafclover

yeah, the WSP CAI will fit same as PR, just cheaper...but you do have to drill still...no biggie there though.

skatanic28

any other thoughts on gutting the converter?
its a cheap way to get a high flow like system
i really dont care bout the legality, as long as i dont get pulled over all the time cuz its so damn loud

JDwyer2821

Click here to visit a Gutting Cat thread
Look there its should explain all but if not happy with that click on the search link at the top of the page and type GUTTING CAT

Matt93SE

iTrader: (44)

I gutted one of m extra cats and lost power.. then again, I didn't stick a straight pipe in there, but left it hollow.. it's raspy and wheezy at the top end because of the turbulence. if you want it, pay for shipping and you can have it. save you a couple hours of work. that stuff isn't easy to get out.

skatanic28

thanks for all your help
im a bit confused now but i think im gonna give it a shot, i just gotta find some way to get a pipe inside of the cat that is equal diameter. should be fun
does anyone know how they are assembled?

Jeff92se

iTrader: (82)

Don't screw up your stock cat. I have one from my VE that's already gutted. I'll sell it to you cheap. You can have someone weld in a pipe on that one and still have your car up and running.

mtcookson

iTrader: (2)

From the back it's not much louder. But the side gives it a nasty metal ringing sound. there isn't too much power increase either. not worth the time. took me 2 or 3 hours to do. you best bet is to just drill a hole strait through the middle. If i'm thinking right, that's kind of what they do on high flow cats.

nismo1989

Don't gut your cat. That is silly. You're not going to go any faster if you do, you'll just attract undesireable attention. Not to mention wake the neighbors...

I got a high flo cat from CatCo for like 80 bucks, and I got one from Random Tech for a little more than that. That's basically the same price you're gonna pay a muffler shop to put on a new stock one when you realise that your car sounds like it should have a confederate flag on the front and a shotgun rack in the rear window.

Bman

I'm no expert on this, but I've heard about how gains with (doing stuff to/replacing) the cat doesn't buy you much power-wise. OEM cats are pretty good flowing these days compared to the original pellet type decades ago.

Besides I think your exhaust gets smelly, not rotten egg necessarily, but if you know what a cat-less car smells like it IS worse. Not good for the environment either.

nismo1989

You sir are correct.

skatanic28

thanks for all your help guys
you probably just saved me from makin a huge mistake
ill just save up some cash for the warpspeed ypipe
ive decided to stay away from the drilling into the fender, ive seen a jsw(unsure of the name) that you just put where the airbox used to be
im thinkin this is the best way to go
thanks again for all of your help

nismo1989

Are you talkin about JWT??? Do you mean a pop charger? I have one for sale...