Track Impulse Overlays is a free set of 13 iRacing overlays that float live data over iRacing, ACC, Assetto Corsa, Le Mans Ultimate and every sim the app supports, in transparent, draggable panels. A full dashboard, your inputs and telemetry, a shift light, a fuel calculator, a radar spotter, a battle bar, the standings, plus a live haptics HUD that reads your bass shaker effects straight from the app. No SimHub required. Ships in the installer, runs on your existing activation.
The Track Impulse dashboard overlay is a full sim racing instrument cluster in one panel, free in iRacing, ACC, Assetto Corsa, Le Mans Ultimate and every sim the app supports. A 270 degree tachometer with gear, speed, rpm and a sweeping needle sits at the centre, with steering and a live 5 second input trace on the left, a configurable telemetry grid with throttle, brake, clutch bars and a G-force dial on the right, and a battle gap strip across the top. The whole cluster scales from one size slider, and cells a sim cannot fill simply hide.
The Track Impulse telemetry overlay shows throttle, brake and clutch as live percentage bars, with rpm, current gear, speed, 11 sweeping shift lights and a steering angle readout, in iRacing, ACC, Assetto Corsa and every supported sim. The panel that shows where you are lifting early, trailing the brake too long, or spinning the rears on exit.
The Track Impulse shift light is a standalone upshift indicator you can place anywhere on screen, right in your sightline. It lights yellow, then red, then flashes blue at the optimal upshift point, following the sim's shift rpm in iRacing, ACC, Assetto Corsa and every supported sim, or the redline trimmed by up to 500 rpm where the sim does not expose it.
Pick the look that reads fastest for you: block, bar, ring or meter, four styles each with an optional gear digit. It stays square and independent of the inputs panel, so it never competes with the rest of your layout.
The Track Impulse relative overlay lists the cars immediately ahead and behind you, ordered by interval in seconds rather than race position. Each row shows position, car number, driver name, iRating, live interval, car make, last lap time and tyre compound in iRacing, with the fields a sim exposes filled automatically in ACC, Assetto Corsa and Le Mans Ultimate. The panel you glance at to know who is closing, whether you are about to be lapped, or whether the car behind is faster than the gap suggests.
The Track Impulse battle bar shows the only two numbers that matter wheel to wheel: the gap to the car immediately ahead and immediately behind, in one compact strip. Each gap colours green when safe, amber in a battle, red under attack, with a chevron showing whether the gap is closing or opening.
Choose from four layouts: a symmetric bar, a vertical stack with driver names, a proximity track, or a minimal readout. Built for iRacing and Le Mans Ultimate where the gap data is exact, and it hides itself when nobody is close.
The Track Impulse fuel calculator is a built-in iRacing fuel overlay that learns your per-lap burn rate over a few clean laps, then shows litres in tank, laps remaining, fuel needed to reach the flag and exactly how much to add at the next pit stop. Works in iRacing, ACC, Assetto Corsa, Le Mans Ultimate and every supported sim. No SimHub plugin, no spreadsheet, no guessing the last splash.
The Track Impulse radar spotter is a visual proximity overlay for the cars you cannot see, available in three modes. The disc view puts your car at the centre of a circular radar and places every nearby car by bearing and distance, blue when far, amber when close, red and pulsing when you are door to door. Works in iRacing, ACC, Assetto Corsa and Le Mans Ultimate.
Prefer a different read? There is a portrait radar with the cars in a fore and aft lane, and a simple two-bar mode, just a left and right strip that fills as a car comes alongside. All three modes clear the instant the car drops back. Built for single-screen rigs and VR where you have no mirrors.
The Track Impulse session overlay shows the state of the race in one strip: air and track temperature, rain chance and wetness percentage, time remaining, live flag state and your incident count. Six data points you would otherwise have to dig out of iRacing's own screens mid-stint, visible in iRacing, ACC, Assetto Corsa, Le Mans Ultimate and every supported sim.
The Track Impulse standings overlay shows where you sit in your own car class, sorted by class position with the leader at the top. In iRacing multiclass races it splits the field into class blocks (GT3, GT4, LMP2) with strength of field for each, so a GT3 driver is never lost in a field of prototypes. Also works in ACC, Assetto Corsa and Le Mans Ultimate.
Your row stays pinned in view even when the order runs deeper than the panel, with eight columns per driver: position, number, name, iRating, best lap, iRating change, car make and tyre compound.
The Track Impulse haptics HUD is the one overlay no other tool can match. Because it reads straight from Track Impulse, the strip shows a live level for each of your eight bass shaker effects at the same instant your shakers fire it, with the master level alongside. Road vibration, slow suspension, kerb, engine, ABS lock, gear change, wheel slip and native kerb, each with its own meter. Works in iRacing, ACC, Assetto Corsa and every supported sim.
It is the fastest way to tune your bass shaker effects: drive a few laps and see at a glance whether ABS is firing under braking, whether suspension is saturating over kerbs, or whether an effect you thought was on is sitting flat. Pair it with the per-effect controls on the effects page and you can dial tuning in by eye as well as by feel.
Track Impulse ships 13 overlays, each its own panel with its own job. Turn on the ones you want, place them where you want, leave the rest off. Every panel works in iRacing, ACC, Assetto Corsa, Le Mans Ultimate, AC EVO, AC Rally, Automobilista 2 and Euro Truck Simulator 2.
Drag any panel anywhere, then lock the layout with a single key so nothing moves once you are racing. A banner on each panel tells you whether you are in edit or locked mode.
Drag any panel into position, then press F6 to lock the layout. Each panel shows a banner confirming edit or locked mode.
Set each panel to show in the car, out of the car, or always. Keep the relative up only while driving, or pin the session strip everywhere.
Add subtle header and footer strips with track and session info, for context without a separate overlay slot.
Tune background colour, opacity and content opacity per panel. Almost invisible until needed, or solid enough to read at a glance.
Everything lives in a single tabbed Settings window. One place to switch panels on and off and adjust appearance.
Wide horizontal layouts that suit the top or bottom edge of an ultrawide or standard display, out of your sightline.
A language picker appears the first time you launch the overlay app, so it starts in your preferred language. You can change it later from Settings with a quick restart.
The overlays run in every sim Track Impulse supports: iRacing, ACC, Assetto Corsa, Le Mans Ultimate, AC EVO, AC Rally, Automobilista 2 and Euro Truck Simulator 2. The app detects which one you are running and switches automatically. Inputs and telemetry, the fuel calculator, session info and the haptics HUD work everywhere, including Euro Truck Simulator 2; the race-specific overlays, relative, standings and radar, apply to the racing titles. When you are not in a supported sim, the overlays stay hidden.
A few columns rely on data only some sims expose. Strength of field, iRating and opponent tyre compound come from iRacing, so where a sim does not provide a value that field simply stays empty. The panels themselves run everywhere.
The race-specific overlays, relative, standings and radar, apply to the racing sims; inputs and telemetry, the fuel calculator, session info and the haptics HUD run in every supported sim, including Euro Truck Simulator 2. Individual fields that depend on data a given sim does not expose stay blank in that sim, the same as the bass shaker haptics.
The overlays ship inside the installer as an optional component, free on your existing activation. Install Track Impulse, tick the overlays during setup, and you have a full on-screen HUD plus low-latency bass shaker haptics in one app. Free during beta. No credit card.