been looking at an evo ix recently, and got a chance to test drive it the other day. idles and drives smooth, owner says theres a knock sensor and its set up to where the cel blinks 3x per knock. and this happened once during the test drive. it was in no way noticeable without the knock sensor, no audible signs what so ever. just a sign from the knock sensor.

I was told the engine sometimes knock under a full load, or when weather changes, but never has more than 1 knock, and thats way safe. He also stated a stock Evo IX from factory usually has 2-3 knocks under a full load.
Is this true? and is it something to be worried about or am i just thinking way too much?

any thought would be greatly appreciated!

 

just a sign it has a below average tune in it or its noisey in general. $164 in programmer tools & software & a loggable wideband and you can get it retuned and safe etc.. id get it compression tested before purchasing it.. if its healthy then go for it!