SRI or CAI

[ChinoCharles]

Originally Posted by eTiMaGo

Plus, apparently, advanced modern MAF sensors now use some kind of an optical system that is impervious to spilt oil.

POINT! If you know how our MAF sensor is designed, you'll realize again how big of a crock that line of thinking is. Basically, all our MAF sensor does is route air upwards and against a small leaf of reflective metal. This leaf oscillates back and forth at a rate that is so fast, it makes the MAF sensor used on the Yaris and other cars the most advanced to date. An LED shines light on this leaf and a photoreceptor waits to receive this reflected light. The rate at which the LED's light is reflected back to this photoreceptor by the metal leaf determines timing and fuel curves. This is the basic idea of the Karman Vortex MAF. The small, delicate nature of the internals of this part is why it is so delicate and so expensive... but on a car setup to run 35+ MPG on 87 pump gas, it is easy to see why such a device is necessary.

Now, tell me how the hell oil is going to ruin that! Is it going to come off your filter and through the intake piping (near impossible), make its way up the stalk of the sensor (a half step short of impossible) and find its way onto the reflective leaf? (OK, seriously, stop worrying and buy OILED)