yeongk said:
So just ground to the matallic part will do right ??? any improvement compare to other point ???
Frankly, I do not feel any improvement even after having grounded the ECU - by the way, I drive an Avanza.
But than again, according to the GW sifu, the grounding of the ECU is supposed to only give back the power that was never there originally since the orignal grounding is questionable.
But this I can tell you, ground your gear box, the enigne block and the compressor ... and you can already feel the difference! :)