ECU Engine Sim
v1.3.1 · 3.2 MB · code 31
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File information
UpdatedNov 23, 2025
PublishedApr 20, 2021
Packagecom.obdii_lqc.android.obdii.elm327.ecusimfree
Versionv1.3.1 (31)
Size3.2 MB
MD51e7b6ea948df623be0875c34d0031557
Min SDK21
Malware scanTRUSTED
Signature SHA1DD:5C:C4:12:D7:B4:A2:A0:CF:78:1E:27:35:69:FF:9B:5D:69:11:C9
SignerCN=chinh luong, L=Thai Binh, ST=Thai Binh, C=84
Total downloads10,000
This version10,000
DeveloperCHINH LUONG QUOC
Age ratingEveryone
What's new in v1.3.1
Version 1.3.1
Security scan
TRUSTED
- Developer signature verified 2025-11-23
- Signature SHA1 DD:5C:C4:12:D7:B4:A2:A0:CF:78:1E:27:35:69:FF:9B:5D:69:11:C9
- File MD5 1e7b6ea948df623be0875c34d0031557
How to install ECU Engine Sim v1.3.1 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 3.2 MB of free storage.
- Grab com.obdii_lqc.android.obdii.elm327.ecusimfree_31.apk — hit the Download button above (3.2 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 1e7b6ea948df623b…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.obdii_lqc.android.obdii.elm327.ecusimfree_31.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=chinh luong, L=Thai Binh, ST=Thai Binh, C=84. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open ECU Engine Sim — tap Open on the install screen, or find the ECU Engine Sim icon in your app drawer.
Common install errors for ECU Engine Sim
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 5.0 Lollipop or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.