Simplest OBD2 engine remapper yet, with actual canbus connection.

Yet another of these universal OBD (On Board Diagnostic) port engine remappers that claim to analyse your driving and then rewrite key parameters in your ECU (Engine/Electronic Control Unit) to offer greater power with less fuel.
I bought this one because it showed a picture of the PCB in the listing, showing that it uses an eight pin microcontroller and appears to have actual connections to the canbus network on the OBD port.
The power pin placement on the microcontroller is odd. I don't immediately recall a similar pin layout. It would be interesting to know if it's a standard device. It's not a Padauk chip as far as I can see.
In standby the module enters a passive mode at 9mA where it pulses the communication LED. When activity is detected on the canbus network it directly affects the green LED and after a short time triggers the power LED to come on and the communication LED to start flickering. If the canbus becomes inactive the unit goes into standby mode after about a minute.
Because the chip has a direct connection to the canbus network it is possible for a malfunction to take out the network in your vehicle and cause lots of random problems when the other devices on that network are unable to respond to the ECU.
The unit is fake. It's a placebo. To store suitable details for every single car since 1996 it would need to be able to identify models if it could read the VIN (Vehicle Identification Number) code and then have a database of parameters that could be adjusted with a suitable tuning algorithm for every model. That's not viable for a little 8 pin chip and most cars don't have the facility to make significant changes to the ECU tuning settings via the OBD port.

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