So I just had someone local install my lt headers and ory. Everything runs fine until my engine goes into closed loop, then everything goes all haywire. I jacked my car up and looked under it. I noticed that he had put the o2 sensor simulators on the FRONT spots instead of the rear. I took them out, and just ordered o2 sensor extensions so that I can put my actual o2 sensors in the front spots.

Should this fix my closed loop problem?

 

when you say "haywire" what is actually happening?... but yes, having the o2 sensors in the correct place should make a significant difference in how your car runs

 

It idles very high and tries to die.

 

i'm assuming the ses light is on due to the o2s but are there any other codes being thrown?... the idle shouldn't be high or the car shouldn't die even with no o2s... after i put my lt's on i left the o2s out just to do a test start and it ran and idled fine it was just really rich