Does anyone know anything about the performance enhancing chips? They sell all different kinds of them and they range in prices. The ones on ebay are spliced into the intake air temperature sensor or the coolant temperature sensor. Do these things really work or are they a gimmick? What negative effects do they have if they do work?

 

Use the search button dude. Those on Ebay are all junk. Even the ones that PP sells (the JET ones) don't work on the 4Runner either from everything that I've read.

Matt