Anyone have any experience with these? Work? Junk? Will kill my car?
Thanks!
Performance and Fuel Economy Chip for Jaguar Gain MPG | eBay

 

forget about this kind of stuff, they are all junk. it never makes your car better, sometimes even worse.

 

Thanks Japthug. It seemed like snake oil so I figured I'd ask.

 

Looks scary to me. The fact that it fits every vehicle ever made, and that it only has 2 wires, makes me think that it is over priced junk. I did not see where it wires in, I bet it just modifies the coolant temperature sensor so it looks like I is running cooler. You could to the same thing with a 50 cent resistor. I would stay away from this one.