It took 3 spark plug non foulers on my 06 for the check engine light to go away completely. They are only like $4 or $5 bucks at the auto store.

 

i have the 70mm invidia tp with built-in CEL fix and it did not work. i was able to kill the O2 CEL by adding an custom ebay "CEL fix" adapter simlar to a spark plug de-fouler and stuffing it with steel wool. but the steel wool would not last long and would need replacing. i have read that the right angle version (created for the rsx in '02) which is basically longer and at a right angle for the limited clearence on the rsx. same concept as s2k-2nv using 3 de-foulers.

i have a better fix now - flashpro....