Originally Posted by Focusedintntions
I don't see where he garuntee's no lights...right from the product page you linked us to:
"Made from 1.4301 (SS304) Stainless Steel 200cpi Catalytic Converter* 1:1 exchange to OEM Unit CAD designed *ECU may need to be coded to avoid engine management light"
"Oh, I need to take that out, I put that in just to be safe."
It has been removed because he does guarantee the no CEL light from the N55 race-catted DP.