I was wondering whats gonna happen when I junk my cat and Mr OBD2 finds out....I know it'll throw a code but does it send the car into ultra rich limp home mode like some other codes can cause? THANKS!

 

BTW 99 civic DX

 

Ha ha, Mr. OBD2 is going to own you!!
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Yup, it should go pretty rich, and make the car kinda drive like ----..

o2 simulator owns obd2 baby

 

I was thinking that the O2 simulator would set the car at a certain A/F ratio (fake) and the ECU would think that the car was always running at 12:1 or whatever the simulator is set at...is this true? wouldn't this hurt driveability off boost? Thanks!

 

I just installed the o2sim (the good one - computer chip one) on a 2.3l ford engine, its the pimp ----, before I was running rich and getting *** nasty gas mileage. Now its getting much better mileage, and has better throttle response, no cel etc. well all the advantages of running rich compaired to running stoich. I would def reccomend it for any obd2 system.

 

so where do you buy a O2 simulator?

 

http://userwww.sfsu.edu/~ecg/o2sim.htm