today was a bad day, i need to replace my cat and o2 sensor.
I have a P72 Ecu ( civic has a 1995 gsr motor ), and i badly need to replace the o2 sensor to pass smog.
Do i have to get an OEM acura sensor is there a more affordable alternative to this problem? and will the ecu be able to adjust if i dont get a oem, and just get a bosch? and will a universal cat work? i really dont want to dump 500 to get all this taken care of when i kow it can be done myself.. with some help by some friends...

please help, adam.

 

i think Bosch will work fine, although OEM deifintely will work perfect. universal cats will work, just make sure its legit. A "high-flow universal cat" off of ebay is just a test pipe, it will do nothing for emissions.

As for the ECU, just disconect the negative battery terminal while you're replacing teh sensor and cat so the ECU resets, if its a legit cat and a working sensor, you shouldnt throw any codes at all.

 

i'll get a bosch o2 sensor. however i dont know how to tell if the cat is legit or not, what should i look for or can you send me to a website that has the legit cats for a reasonable price?

i dont know anything about turning off the ecu or disconnecting a negative battery, i dont want to put myself into a deeper hole if i do it incorrecly, and the autoshop will charge an arm and a leg to do it.

 

Well since you're replacing the cat, i say get a Magnaflow or Randoms Technolgoy high flow cat. Magnaflows can be had for like $80, you'll pass emissions and might gains a few horses (since its high-flow).

oh man, for the negative battery termianl, grab some pliers or a socket, pop your hood, go to your battery, loosen the bolt on the negative termianl, and disconnect the wire. Let it sit while you replace the cat/sensor, then reconnect when you're done, real simple, for real.

 

so will this one do the job?

http://www.car-stuff.com/catalytic/q...&model=170

all the way at the bottem - 91000 model.

and for the o2 sensor
http://autozone.com/selectedZip,9210.../selectZip.htm

will that one work?

 

looks great!

 

s the sensor difficult to install or is it something i could do myself with no prior experience with this?

 

yea totally, just use an open end wrnech and lefty loosey righty tighty, just unclip the harnses, unscrew the sensor, clip the new sensor in, screw it into the o2 bung and you're set (remember to reset teh ECU). Depending on how old the car, it might be rusty, so you may want to use some WD-40 on it. Watch out though, if its a working sensor, the WD-40 will probably ruin up the sensor itself, so you wont wanna use it if the sensor is still good, but since its already a bad sensor dont worry about it (just wipei t all off before you install the new sensor). Have a shop do the cat though, that might require some welding (depnding wihch kind you got).

 

even though i have a civic, i need this gsr cat right?

 

well...if its a universal cat, basically a cat is a cat, those ones you are looking at are universal, they can be welded into any exhaust system (thus the universal) and will take care of emissions, just go with that 910000 you looked at, it will do you just fine