Hi kev and thanks. I thought the O2 eliminator could only be used with a power commander.

Also I just entered the co mode after the diag screen and it comes up with C1 then I press select and reset again and it comes up with 21.

So the dash says C1 21 does this sound right

Also why does my bros 2004 model go to C1 or C2 my 2010 only has C1