so i was gonna install my test pipe last weekend but then i realized i needed some longer bolts & nuts, cuz the cat was already threaded. the test pipe wasn't.

anyway, i decided to leave the bung i installed for the o2 sensor still in the exhaust, with the stock cat still in, till i get the right hardware. now i got a check engine light. is this normal? will it go away once i get the test pipe in?

 

just pull the fuses and clear it when everything is together

 

which fuses?

 

under the hood fuse panel has 2 fuses for the ecm. one is 20amp and one is a 15 i believe. pull both of them out for 10sec and the light will clear and your ecm will be reset.

 

ok, coo i'll try that. thanks dood.
...i'll let u know what happens.

 

ok

 

cool, it went away for now. does that mean my o2 sensor may still be ok?

 

The code was most likely a "flow" code due to the bung being in place. It will come on again until you put the test pipe in.

 

phew...ok, cool i hope so. thanks.

 

well, it just came back on after driving for 30 mins. hope that's all it is.