i JUST INSTALLED A JWT POPCHARGER, BORLA EXHAUST, AND DOWNPIPES(TEST PIPE). I DISCONNECTED THE BATTERY BEFORE I STARTED AND AFTER ABOUT 8 MILES THE LIGHT CAME ON BUT THE CAR SEEMS FINE. ANY SUGGESTIONS?

 

Heres your fix:

Go to autozone and buy 2 packs of 18mm long tapered spark plug non foulers. Drill a 1/2" hole on a set so the o2 sensors fit in them and use the other set to connect to the pipes. Reset the ecu and it should not come back.

Or just invest in a o2 simulator.

 

will gutting the stock cats result in the need for the same solution?

 

Ive seen gutted cats not getting a CEL. I find that weird.