I installed my rexpeed test pipe , and put my oem 02 sensor on the second bung, after that i downloaded my ots stage 2 93 oct map, and i ve been just waiing for my cel to come up and nothing... Does the stage 2 automaticly cancells the second oem o2 sensor?... Btw i already did over 100 miles with this new setup

 

Our Stage 2 OTS maps are calibrated for an aftermarket downpipe and testpipe. You may see a CEL but likely wont as long as you continue to use the Stage 2 map.

Marshall@COBB

 

I see CEL with stage3 map. the question is why you didn't disable it like stage1,2

 

What CEL are you seeing with the Stage 3 map?

Marshall@COBB