Lambda Engine Management Problems

[RyanBurrows19]

Recently gone de cat (raceland 421) got one lambda plugged in to manifold had the faults removed from ecu but engine management light keeps coming on and putting car into limp mode. How do I get round this?

[quikydan]

Tried taking the ecu out for an hour then putting it back in? Worked for me.

[RyanBurrows19]

Can you talk me through the process do I need both lambda in? What do I need to do

[stevo1600]

if i were you get another lambda boss welded into the system and connect up your second sensor. then reset ecu, (take off the battery live and negative) took 24hours for mine to reset can be shorter though.

[RyanBurrows19]

I have two lambda sensors I've been told just to plug one in and rest the fault (plugging in) I'm now unsure of what to do