So, this is a bit more specific than the title, but namely I have a 2008 Scion tC. I bought it used and it came with an aftermarket K&N CAI and an aftermarket exhaust.
Now for those unaware, Toyota underwent a class action lawsuit in 2014 over oil consumption in the 2AZ-FE engines. Essentially, they're required to perform tests on anyone with that engine who requests one and has under 150,000 miles.
I'm going to go in to get my test done soon, which it will pass (or fail, depending upon how you look at it) with flying colors (I use about 1.5 quarts every 1000 miles), and I'm just trying to make sure there's no way they can deny me the service.
I understand simply having the parts on doesn't void it, but could they possibly claim that the CAI is the cause of the increased oil consumption? If so, I'll simply buy a stock airbox, the alternative being sacrificing a $4000 engine rebuild.