On 15/06/2020 16:31, alan_m wrote:
On 15/06/2020 15:53, Jim GM4DHJ ... wrote:


My car started and ran ok after removing the battery for a couple of
weeks, must have non volatile memory in the ECU.
.

still have to relearn a few things though .....

But nothing that important. It may run rougher for 10 to 15 minutes but
I guess most people wouldn't notice.

Go and find a Youtube video to show that these things work
One shows that after connecting one of these devices, then disconnecting
and re-connecting the car's battery all the engine sensors are still
connected to the ECU and still working !!!!

yes but are they 100% safe ....guess I will find out as I ordered the
cheapest one from chinky land.....