K&n 63-3070

[phr3ak38]

I have the K&N 63-3070 and yes i unplugged the battery before install, installed exactly as described and my 2009 chevy tahoe 4.8l now is throwing a check engine light for bad 02 sensors. anyone else have this issue?

 

[randuff]

Hmmm, I just installed mine 2 weeks ago and no issues for me. Hopefully someone an chime is.

 

[Freedom Motorsports]

Try cleaning the MAF sensor, did you happen to clean the throttle body when you changed it? What did it look like inside it? Clean or slimy?