Just installed Stillen CAI, got some codes

SouthArk370Z

Most common causes of those codes are: dirty MAFs and air leaks. Google is your friend.

Since you've cleaned the MAFs, look for an air leak. While the engine is running, hold one end of a paper towel tube (or similar) to your ear and move the other end around near the intake piping to locate the leak. Follow all safety procedures when working near a running engine.

Edit: If it's not a leak, then check the wiring going to the MAFs.

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nandosman

If the CEL is gone, but the codes remain, does it mean that they will disappear eventually, or do I still have an issue?

SouthArk370Z

Clear the DTCs (your reader should be able to do that) and see if they return.

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nandosman

I did that with Torque, but when I rescan for them, they show up in green, like the last screenshot I posted. But no CEL.