CEL comes on with MILe eliminators!

[leviz79]

Can any body tell me why I still get a p0420 code and this is my second set of MIL eliminators from AM. Im running an SLP off-road X with loudmouth 1's, 4 new o2 sensors and stock exhaust manifolds. Im on a 93 octane tune from sct and I use mostly Chevron 93 fuel, if that matters.

[1slosix]

sometime mil eliminators don't do the trick...try going to any auto parts store and buying two spark plug non foulers thats the same thread size as your o2 sensors...drill a 1/2 hole in the base of the non foulers...put them into where your o2's go and screw the o2's into the non foulers..reset the light and take it for a spin. easiest way i know of to fool the system and works most of the time for $5 in parts lol

[leviz79]

Thanks, I'll go to the store in the morning and purchase the non foulers, I'll update a soon so can on the progress, you would think that the MIL eliminators would be enough but I guess not.

[Trojan Horse]

Originally Posted by leviz79

Can any body tell me why I still get a p0420 code and this is my second set of MIL eliminators from AM. Im running an SLP off-road X with loudmouth 1's, 4 new o2 sensors and stock exhaust manifolds. Im on a 93 octane tune from sct and I use mostly Chevron 93 fuel, if that matters.

You still have 4 O2 sensors?
I thought the MIL Eliminators were used to allow you to do away with the 2 after cat O2 sensors?

[leviz79]

They plug in between the the rear o2 sensors wire harness and the o2 sensors, doesn't eliminate them.

[Trojan Horse]

Originally Posted by leviz79

They plug in between the the rear o2 sensors wire harness and the o2 sensors, doesn't eliminate them.

I see. Those are for use with high flow cats.
I think there is another type that allows you to completely do away with the rear sensors, when using an off road H or X-pipe but I'm not 100% sure.

[taylor98gt]

if you have a tuner you can go in and turn off the o2 sensor compleatly cant you?