TuneFI
The only fuel controller that tunes from your engine's real data — not guesswork.
TuneFI logs throttle, RPM, injector pulse width, and wideband AFR at 100 Hz, then builds a corrected fuel map straight from your ride. You tune it from your phone — no laptop, no dyno, no black box. And on the KLX300, it's the only piggyback that also recovers the factory ignition retard above 8000 RPM.
Order — ships from the current batchThe Advantage
Tune from your phone.
No laptop, no dyno. Firmware ships over the air. The app source opens up.
Learn more →See every pulse.
100 snapshots a second — RPM, throttle, injector pulse width, AFR, plus ECU sensors. ~1,000 data points a second.
Learn more →Know rich or lean.
Real air-fuel ratio from any wideband controller. Measured, not guessed.
Kills the accel bog.
Adds fuel at the tail of each pulse without fighting the ECU's own acceleration enrichment — the transient bog other controllers cause.
Learn more →Gets better after you own it.
Firmware ships from the app. The Full tier keeps evolving.
Reads the factory brain.
K-line reads RPM, throttle, temps, manifold pressure, speed and FI codes through the diagnostic port.
New Owner
Setup Guide
Wire it, pair it, tune it — step by step.
Shared Maps
Fuel Maps
Starting maps per setup — download, load, verify AFR.
Your Map
TuneFI Studio
Logs in, map out — build your own fuel map from ride data, in the browser.
Everything It Does
Features
All of it on one page — starting with why it can't leave you stranded.
In Your Pocket
The App
Dashboard, maps, calibrations, firmware — the whole device, driven from your phone.
Keep Exploring
Latest Updates
All updates →Proof
TuneFI v1 — the final version is here: 20 devices shipped, and the full install walkthrough
TuneFI Reveal — Hardware, Software & Live Demo
ECU Sensor Access — Live Factory Data on Your Phone
Latest Lab Report
KLX300 Secondary Throttle Plate: What It Does & Why Removing It Adds Power
Decoded factory ECU maps show the KLX300 holds its secondary throttle plate (STP) at ~50% right through 7000 RPM in 1st/2nd gear — so the top half of your throttle does nothing. What it does, why Kawasaki fit it, and the honest delete tradeoff.
Pre-order & Community
Reserve a unit for the next production batch with a $5 deposit. The deposit is refundable anytime; when the batch is ready it's returned in full and you complete your order at the full price.
The first batch of 20 units is with customers now. The platform keeps evolving — firmware ships over the air. Technical discussion on Discord.