Hey there. I just installed new OBX headers and Magnaflow dual exhaust on my 2004 Dodge 1500 5.7L Hemi. When I started the truck, the check engine light was on so I disconnected my battery, then tried again. It stayed off for a couple of mins. then came back on. Any suggestions on what to do next?

 

do you still have the cats?

 

Nope, we got rid of the cats. Got high flow resonators..

 

and hence why you have a CEL.

Time for the non-fouler trick. (FAQ section)...

 

Could you be a little more specific?

 

cancel that! Got it! Thanks alot!

 

Ok. Now that I have found those. Should I do that with all four of my sensors or just the primary and secondary?

 

Ok now should I use those non-fouler things on all 4 sensors?

 

Put them on the rear O2 sensors. The front O2's do not need them. If you still get CEls after putting them on and resetting the PCM, try stuffing them with 0000 steel wool and try again. Thats what i had to do.