Hondata

Hi.

I just started my car a b16a2 with a precision turbo. using lastest hondata s300 board and latest beta software,

I noticed 2 things after i shut the car down.

When i turn the key to acc, and press the lightning bolt on smanager i can see under sensors that my Map (Absolute pressure) is kind of haunting, reading is not static or stable. is this normal? i tried with the map disconnected and reading is still going up and down on smanager.

I also noticed that the batery reading is doing the same. kind of flickers. i have checked the battery voltage and is stable. also checked voltage at the starter, alternator, and is stable too, checked the white/blue strip wire at green connectorfor battery voltage and the reading is stable and same as battery, so i checked a25 and a24 at the ecu and voltage is constant, no flickering, only thing is that it reads about .20mv lower than the battery itself. battery reads lets say 12.20v and a25 and a24 reads 12v, although smanager shows some sort of voltage change.

are these two conditions normal? if not what can i do to make them stable?

Attached calibration and datalog showing this issue.

Thanks

I can't see the MAP changing the but battery voltage oscillation is normal. You're seeing the effects of the ECU converting the voltage to a digital value and oscillating between two values.

Thank you Hondata,

I thought i had some weird issue, my map is also oscilating, the same way it is the voltage, will try to get another datalog so you can confirm if it is the same effect as the battery

Regards