I was looking on ebay and i cam across these things and wasn’t sure if anyone has used them or if they even work? One is some sort of transistor that plugs into the ECU and makes it think you are pulling in air that is colder.
The other is some sort of chip that plugs into your mass air flow sensor.
I am just wondering if they are worth the money and if they could possibly mess up your motor? They say they don’t but sometimes people will say anything to make a buck!