Catalytic and pipes

[beansbear]

Was wondering what you other blown ep3's are doing with your cat? I was talking to my exhaust specialist and they were telling me to get rid of mine since its a bottleneck. I am more worried about check engine warning. Is there a way to fool the 02 sensor?

what diameter piping are you all running? I plan on going 3" but still need to choose an exhaust that will work with my buddy club kit and clear the JDM rebar.

grrrrr.

[ep_nezay]

I want to know about the 02 aswell, Im in the process of buying a hi-flow cat and 3" from 2 1/4 pipping, but do not want to get a check engine light.

[beansbear]

where are you getting the high flow cat from?

[chubbychu]

do they make high flow cats? would it be wise to do this on a stock ep?

[esmith13]

There are high flow cats that will fit on eps. They are pretty much a waste on a N/A ep unless it's got major bolt-ons. Cybernation Turbo gets rid of cat and has a test pipe that accepts the two o2 sensors. Their black magic ELF chip corrects for the absense of the cat and prevents the computer from throwin codes or whining about the cat missing. Once blown, the less restriction, the better, so a test pipe is better than a high flow cat and a high flow cat is better than a stock one (which would eventually fail on a boosted car). In most states, however, you fail inspection automatically if you don't have a cat o either be prepared to loose like 40Hp with a high flow cat (versus test pipe) or find a buddy @ a shop to pass your ass with out one (like I did).

Oh, and before you jump to conclusions, I don't know weather or not the cat is removed or changed with the other available turbo kits or not -- With the cybernation kit it's removed and replaced with a test/down pipe.

Eric

EDIT: And beansbear, what turbo are you getting?? you may not need a 3" exhaust. The CN kit for example was only making 240HP on cars with a 3" downpipe and 3" test pipe, but they changed it to a 2.5" down and test pipe and made 260HP

[beansbear]

hey there!
I have the greddy kit already and will probably go 2.5" piping since i think 3" is just too big. As far as a high flow cat or test pipe.... havent made up my mind.

[esmith13]

well, all of my piping is 2.5" now and I'm just gonna stick with my 2.25" thermal cat-back... It's a straight thru exhaust (made like a motorcycle muffler) so there is no reason for me to replace it now... Maybe when I go stage II in a year or so :)

Eric