exhuast question

dirtydog · February 21, 2011, 02:27:51 AM

i have a 97 chevy 4x4, vortec 350. the stock pipe is about 1 7/8" and im up grading to headers and 2 1/2". can i leave out the cats and should i run 4 o2 sensors. dont really have a plan with the cats yet and need a good one asap. what can i do with the o2 sensors to keep the computer from going goofy or something i dont need. thanks for all input and suggestions

marshall · February 21, 2011, 02:51:12 AM

they make complete bolt-on exhaust kits, have you checked those out?

dirtydog · February 21, 2011, 02:55:19 AM

got headers, mufflers and 2 10' 2 1/2" pipe. was gonna use the cats but the holes arnt big enough for flow and cant make them big enough

Eroq · February 21, 2011, 03:23:27 AM

Gotta run the cats and all 4 O2 sensors.. will never EVER run right, unless you put 4 simulators on it. then it still wont run right..

Summit sells aftermarket cats.. your going to need 2 one left bank one right O2 sensor before and after both... Only way you can get it to run right....

dirtydog · February 21, 2011, 03:33:52 AM

Quote from: Eroq on February 21, 2011, 03:23:27 AM
Gotta run the cats and all 4 O2 sensors.. will never EVER run right, unless you put 4 simulators on it. then it still wont run right..

Summit sells aftermarket cats.. your going to need 2 one left bank one right O2 sensor before and after both... Only way you can get it to run right....

not what wanna hear but probably what i gonna have to do

Eroq · February 21, 2011, 03:34:33 AM

Quote from: dirtydog on February 21, 2011, 03:33:52 AM
Quote from: Eroq on February 21, 2011, 03:23:27 AM
Gotta run the cats and all 4 O2 sensors.. will never EVER run right, unless you put 4 simulators on it. then it still wont run right..

Summit sells aftermarket cats.. your going to need 2 one left bank one right O2 sensor before and after both... Only way you can get it to run right....
not what wanna hear but probably what i gonna do

Yup, or else y our SES light will stay on, and it'll misfire like a mo-fo! Not to mention probably dump fuel right out the tail pipe.... seen that before! summit sells hi flow cats and stock replacements...

dirtydog · February 21, 2011, 03:36:19 AM

yeah but i need this exhaust done yesterday

Jjay78 · February 21, 2011, 07:41:44 AM

get the summit high flow, their stock replacement ones will leave you a lil on the disappointed side... but ya kinda stuck with having to buy new ones man