I removed the screens and wish I hadn't. There is nothing there to be had and it makes an already expensive piece more vulnerable to damage. The stock unit can support big hp numbers so I'd leave well enough alone.

 

Does that electronics parts cleaner work on o2 sensors at all? I would like clean them if possible.

 

Contact parts cleaner is what you should use, don't touch the sensor with any object as the sensor wires can be damaged easily.. Make sure the cleaner states at min it "wont detune tuners..." This means it won't detune or change the calibration due to temp changes from the actual cleaning fluid. I'd advise against using standard electrical cleaner if it doesn't state its safe for sensive/precision instruments.

(this all pertains to the maf sensor...)...