Is a resistor the only thing that's available to allow an OBD2 Accord to not throw codes with a test pipe ?

I would like to get one but don't want the check engine light

 

oom by "test pipe" i asume you mean a "hollowed cat", or "free flow cat"?

i ran a free flow cat on my 96 obd2 accord and i had the bung from the old cat cut fitted and welded into the freeflow and i never threw a code.


[Modified by Sabastian, 8:26 PM 5/6/2002]

 

wow.... i'm surprised.... is this for rizzo ?

was it a test pipe or high flow cat ?? high flow cat's still have honeycombs..

 

my testpipe doesnt throw a code, but i have obdi, but my header did *shrug* i think it has to do with my o2 sensor, but how the hell could the ECU know if you have a cat or not? its just a pipe! unless it counts on back pressure or something.. uhm, try hitting it with a hammer

 

my testpipe doesnt throw a code, but i have obdi, but my header did *shrug* i think it has to do with my o2 sensor, but how the hell could the ECU know if you have a cat or not? its just a pipe! unless it counts on back pressure or something.. uhm, try hitting it with a hammer
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OBD2 - Onboard Diag. 2 - has a second O2 after the cat that reads clean air. If it reads dirty (having a test pipe) it raises voltage and throws a code on your ECM.

Then your car won't run right..



[Modified by Escobar, 9:33 PM 5/6/2002]

 

i didnt know the difference i see now tho..

yah mine was "honeycombed" thats a good way to explain it lol.

 

Actually, if the O2 in the cat throws a code it in no way affects the running of the car. The primary O2 sensor is the one that will make your car run like crap if it throws a code.

 

ACTUALLY, it will.

 

No, it will cause your car to run bad.. I had the O2 go bad on me once, and had to get it replaced. I had to drive the car for 3 days before getting it fixed and I was constantly spitting black smoke out the exhaust and the car ran like crap.




[Modified by Escobar, 9:16 AM 5/7/2002]