# CarDash 1.2.7

## Fuel economy follows the car

The rolling 5 km economy now prefers the ECU's engine-fuel-rate PID (`5E`)
instead of always estimating fuel from MAF and a petrol stoichiometric ratio.
That is the same injection data the car's trip computer uses, and it works for
diesel engines — which run lean and were the reason the MAF estimate read much
higher than the dash.

- If the vehicle reports `5E`, its fuel rate drives the economy figure.
- If it does not, CarDash keeps the MAF/AFR fallback for petrol cars and shows
  the same estimate as before.
- The native worker checks the supported-PID bitmap first, so a vehicle without
  `5E` does not pay an extra timeout on every poll.
- Speed, fuel rate and MAF are sampled next to each other to reduce transient
  pairing error.

No settings change and no migration are required.

## Install

Download `cardash-android-1.2.7.apk` from the release page or the repository:

`https://git.krasi.net/kkazakov/car-interface-android/raw/main/releases/cardash-android-1.2.7.apk`

SHA-256: `2bd589f7fb503c46e56ddcc872454d76ac1f3a64f7e5d5c8841b23efaa8e50c7`

The build is signed with the same project key as previous releases, so it
installs over 1.2.6. Android still asks you to confirm the install.