// COMING SOON — iOS ECU TUNING
GhostTune App Icon

Tune anywhere.
Compromise nothing.

GhostTune is a professional ECU tuning app for iPhone and iPad — built from the ground up for MegaSquirt* MS2/Extra* users. Full table editing, live data, and tune management. No laptop. No wires.

✉ Join the Beta See Features →

Currently in beta · App Store release coming soon · Requires MS2/Extra* 3.4.4 firmware · Modern iOS · WiFi connection

MS2
ECU Platform
Verified
Writes
Live
ECU Data
3.4.4
MS2/Extra
iPhone + iPad
Platform
// CAPABILITIES

Professional tuning tools.
No laptop required.

Every screen is purpose-built for real-world tuning workflows. Not a port. Not a web app. Native iOS, built for the dyno, the garage, and everywhere in between.

📊
VE Table Editor
Full volumetric efficiency table editing with live gauge footer showing RPM, MAP, AFR, and advance. Pinch-zoom, tap-to-edit, and delta display mode. Includes an autotune engine with per-cell locking to protect cells you've dialed in.
⚡
Ignition Tables
Complete ignition advance mapping. Read, edit, and burn directly from the ECU. Every write goes through a full verification sequence before returning control.
🔥
AFR / Lambda Targets
Edit your AFR target table across the full load-speed matrix. Live wideband EGO status displayed in the footer so you can see closed-loop activity as you tune.
📡
Live Gauge Dashboard
Real-time RPM, TPS, MAP, CLT, AFR, IAT, battery voltage, and ignition advance — streaming live from the ECU over WiFi. Demo Mode lets you explore every screen without a connection.
🔧
Cranking & Cold Start
Dedicated screens for cranking enrichment, priming pulse, and afterstart enrichment. Full CLT-axis temperature table editing for precise cold-start behavior.
💾
Tune Manager
Save, load, and export complete tune snapshots in GhostTune's secure tune file format. Share tunes with other GhostTune users without touching a PC.
🛰
Connection Diagnostics
Real-time connection health monitoring with round-trip latency stats, frame logging, and a values inspector. Know exactly how your wireless link is performing before you burn.
🔒
Burn Guard System
Every write to the ECU passes through an additional layer of safety logic designed to ensure data integrity from end to end. The result: accurate, verified writes every time — no partial burns, no corrupt tables.
📖
In-App Help — 31 Screens
Every parameter explained in plain language, right where you need it. No hunting through a PDF while your engine is idling.
// SETUP GUIDE

Up and running in minutes.

GhostTune connects to your ECU over WiFi using a small hardware bridge wired to the diagnostic serial port. No phone adapters. No Bluetooth. No proprietary cables.

01
Build or obtain a WiFi bridge
GhostTune communicates over TCP via a WiFi-to-serial bridge connected to the ECU's diagnostic port. The in-app Setup Wizard walks you through what's needed. Supported bridge hardware and firmware requirements will be listed before launch.
02
Connect the bridge to your ECU
Wire the bridge to your MegaSquirt*'s RS232 diagnostic port and power it from an accessory circuit. It broadcasts its own WiFi access point on startup — no router required.
03
Join the bridge network on iOS
Connect your iPhone or iPad to the bridge's access point in iOS Settings. Open GhostTune — it discovers the bridge automatically and establishes the connection.
04
Tune
Live gauges appear automatically. Navigate to any table screen, read from the ECU, edit your cells, and burn — with full write verification on every change.
// COMPATIBILITY

Verified hardware.

GhostTune is developed and tested against MS2/Extra* 3.4.4. All other platforms are in active evaluation. Compatibility status is updated as testing progresses.

ECU / Firmware Status Notes
MicroSquirt* · MS2/Extra* 3.4.4 VERIFIED Full read / write / burn — actively developed and tested
Other ECUs & firmware versions IN TESTING Compatibility evaluation in progress — more platforms coming
// BETA ACCESS

Be the first to tune with it.

GhostTune is currently in closed beta. If you're running MS2/Extra* 3.4.4 and want early access, get in touch.

Coming to the App Store
Beta coming soon · App Store release TBD

GhostTune is gearing up for beta. If you're running MS2/Extra* 3.4.4 and want to be among the first testers — or just want to be on the lookout for when beta drops — leave your email and we'll reach out when the time comes.