Offroad Prochamber but no engine light?

[DCTHOM3]

I recently had an offroad prochamber installed to go with the magnaflow catback. It sounds great but I was surprised that the check engine light did not come on. Should I still turn the rear O2's off or just leave it alone?

 

[Black Talon]

Are you sure that the Rear O2's were not already turned off in your Diablosport tune.

 

[DCTHOM3]

No I have the tune set to stock, and doubt the car was tuned before I bought it.

 

[trmin8ter03]

I resently installed a upr o/r x pipe, my engine light didnt come on either. It is tuned but i dont know if there is an option on the diablo that turns off the rear o2 sensors.

 

[Nutty 5.0]

I had a similar issue when I returned my car from stock (Bought with Diablosport tuner) so I could get it tuned with a SCT chip. It was 70+ miles there. May have been a pending code but same thing with me. Also have O/R prochamber.

 

[03cobra#694]

I have the o/r prochamber also.The light didn`t come on at 1st,but it did after a while.The rear o2`s have been turned off when I got my tune.

 

[DCTHOM3]

Well thanks for the response guys. I appreciate it alot. Hopefully I can get it on the dyno soon and work out a tune.

 

[twhitey]

Turn the rear o2s off with your tune. It will take a little while for the pipe to make the computer throw a code. I drove around for a few weeks with out cats or a tune.