Jan 22nd, 14, 01:42 PM
|Gold Lifetime Member
Join Date: Oct 2007
Location: San Diego, CA
Re: installed headers now how do I
My info is pertinent to 4th gens but should be relevant to 5th gens also.
Did you install Long Tubes or shorty headers? I'll assume LT's.
I assume you have O2 sensors in the header collector or (preferably) in the pipe beyond that (about 6" or so from the collector). They make simulators for the rear but the better bet is to simply tune them out (turn them off) so they don't register. All the rear O2 sensors do is measure catalytic converter efficiency so they are not required for the PCM to work. Since you put on headers I assume you have some sort of tunner program (HPTuners or similar - NOT a hand held as it probably doesn't have enough function to do what is required which is to retune the engine F/A mixture, timing, knock sensitivity, etc and delete from the PCM's feed whatever was deleted. Note: Timing and F/A adjustment is best done on a DynoJET or Mustang dyno or similar).
As I stated you'll want to turn the rear O2's off.
Next question: Was that all the SES light was on for? Did you log any and all codes?
More info may be required to diagnose what the problem is...
67 Camaro: 454/TH400/4.10 12 bolt. Lots of options: PS/PDB/PW, tilt, tach, gauges and more. K-K + 797-Z...
"Politics is the art of looking for trouble, finding it whether it exists or not, diagnosing it incorrectly and applying the wrong remedy" - Sir Ernest Benn