So, i know im going to get CAPSLOCKED by a lot of you for asking this but what is the go with these ebay chips? {DESCRIPTION} Like, what exactly do they do ? modify the ECU? sounds a little Iffy..
Can they damage your car?

all they are is a resistor pretty much. as far as i know, all it does is make the ECU think the car is cold all the time, so it runs a richer fuel map, until the ECU relearns, and it becomes useless. not that it isnt useless in the first place, lol

haha ok thanks for the replies guys.