So yesterday night I put my APS test pipes and my 5/16 Z1 Plenum Spacer. The service engine light keeps on coming on. Do I have to change the O2 sensors and get the delete?

 

think about what you just posted. come back once you figure out the answer (hint, you already answered yourself)

 

where can i get those o2 sensor deletes?

 

Try this, pick up a pair of spark plug non foulers at an auto parts store, 14mm, and screw them into the O2 sensor bungs then screw the sensors back in. Sometimes this is enough to keep it from triggering the CEL. It's a cheap fix if it works. We can tune for the test pipes and make the car "learn" to operate without the cats.....but you're a little too far away to drop by for a tune.