The Overlay Suite
Track Impulse is a set of free iRacing overlays: radar, relative, standings, fuel calculator, dashboard and a live voice coach. The same sim racing overlays run in ACC, Assetto Corsa, Le Mans Ultimate and ten more sims. Sixteen of the twenty-five stay free for good. Pro is $3 a month, free during the beta. One install also runs your bass shakers.
iRacing
Assetto Corsa Competizione
Assetto Corsa
Assetto Corsa EVO
Assetto Corsa Rally
Le Mans Ultimate
rFactor 2
Automobilista 2
RaceRoom
F1 25
Euro Truck Simulator 2
BeamNG.drive
EA Sports WRC
DiRT Rally 2.0
The overlay suite running in a live race: the radar filling as cars close, the battle bar holding both gaps, the live coach calling a corner and the fuel calculator counting down the pit window.
On YouTube: Free iRacing & Sim Racing Overlays: Radar, Relative, Fuel, Dashboard, Battle Bar
The Track Impulse radar spotter is a visual proximity overlay, an iRacing radar 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, Le Mans Ultimate, Assetto Corsa EVO and Automobilista 2.
Prefer a different read? The side bars alongside it are the minimal view: one slim bar per side, a capsule sliding along it for each car, red with a pulsing rim when you are door to door and an amber chevron at the foot when someone is closing from behind. There is also a portrait radar with the cars in a fore and aft lane. All three views clear the instant the car drops back. Built for single-screen rigs where you have no mirrors. The iRacing radar page covers all three, the metre thresholds and how it compares in depth.
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+12.71:32.3The 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 and class, driver name, iRating, projected iRating gain, licence, live interval, last lap pace delta, manufacturer badge, gap, last lap time and tyre compound in iRacing, with the fields a sim exposes filled automatically in ACC, Le Mans Ultimate, Automobilista 2 and RaceRoom.
Reading threats is the job. The interval turns red when a car closes inside your battle range, which you set anywhere from a tenth of a second to three seconds. An optional amber highlight on the driver's name marks a car that is close, and the pace delta tells you whether the car behind is actually faster or just close. Every column can be toggled and reordered, so the panel carries exactly what you glance at and nothing you do not.
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, a pit window countdown in laps, with the minutes beside it, and exactly how much to add at the next stop, with the pit call, your lap and the fuel margin pinned in the footer. Six styles: it opens on the Apex card shown here, which has four layouts of its own, and drops back to a compact strip or the classic card if you prefer. Works in iRacing, ACC, Assetto Corsa, Le Mans Ultimate and every sim that publishes a fuel level. No spreadsheet, no guessing the last splash. The iRacing fuel calculator page covers the burn-rate maths, the pit window and every style in depth.
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, paired in the centre of one compact strip. Each rival gets a name, position, car number and licence, so you always know exactly who you are racing, and a proximity track across the top shows both cars closing in real time.
Choose from six layouts, from a minimal readout to the full broadcast-style bar with a last lap row comparing your pace against both rivals. Built for iRacing and Le Mans Ultimate where the gap data is exact, and it can hide itself when nobody is close.
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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. The same tachometer sits at the heart of every design. Five of them sweep it through a full 300 degree arc with gear, speed and revs on the hub, the Blade folds it into a half dome and the Fan into a quarter dial in the corner of your screen. What changes is the shape around it. Above are three of the newest: the wide Pod, the centred Delta Wing and the tall Halo, each carrying the battle with the cars ahead and behind, live pedals and a data strip. Seven designs ship in total. Most of the body is swappable, so a segment can hold your input trace, the learnt track map, incidents, iRating, time remaining or your position, and a cell a sim cannot fill reads N/A, never a made-up number.
The Track Impulse shift light is a standalone upshift indicator you can place anywhere on screen, right in your sightline. It climbs through amber and red and flashes blue at the optimal upshift point, with an optional green zone underneath. It uses the car's own shift points in iRacing and EA Sports WRC and works from the redline in ACC, Assetto Corsa and every other supported sim, and a trim of up to 500 rpm either way moves the point to suit your car or driving.
Pick the look that reads fastest for you: five styles, from a simple block, gauge, ring or meter to the round Apex dial above, each with an optional gear digit. It stays independent of the other panels, so it never competes with the rest of your layout.
The Track Impulse haptics HUD is an on-screen meter for your bass shakers: a live level for each of your eight effects, plus the master level, moving at the same instant the shakers fire. The same install that draws your overlays also drives them. The haptic engine behind it delivers telemetry to your shakers with as low as 2ms end-to-end latency, a measured 8ms in iRacing against SimHub's 137ms.
It is the fastest way to tune your effects: drive a few laps and see whether ABS is firing under braking, whether suspension is saturating over kerbs, or whether an effect you thought was on is sitting flat. No shakers? Leave this panel off and everything else on this page works exactly the same.
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1:33.0-25The 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), each with its own strength of field and the lap counter in the class band, so a GT3 driver is never lost in a field of prototypes. Also works in ACC, Le Mans Ultimate and Automobilista 2.
Your row stays pinned in view even when the order runs deeper than the panel. Each driver gets position, car number and class, name, gap to the class leader, pace delta against your last lap, best lap, iRating, licence, manufacturer badge, last lap and tyre compound, plus projected iRating change, with the class-fastest lap highlighted. Lapped cars show an amber plus one L in place of the gap, so you know who is not racing you before you commit to the move. Every column can be toggled and reordered.
The Live Coach is an overlay that picks the single biggest thing you can change for the corner you are about to enter, and says it out loud. Brake later. The chip beside it carries the size and the price, about 15 m and worth 0.3 s. One instruction, spoken before you get there, so there is nothing you have to read at 180 kph. It runs in iRacing and Le Mans Ultimate, and it is the only live coaching panel in any overlay app.
It stays quiet until it has three clean laps of you on record, so nothing it says is a guess, and at a car and track you have driven before it picks up from your last session. In a race it coaches after each lap, keeps the live corner calls off unless you invite them, and holds back in battles, side by side, under yellow and on pit road. The found counter is time you have actually taken out of your lap, not a projection of what you might gain, and it is a running total kept per car and track.
Performance Review is a full iRacing lap analysis app with a driving coach built into Track Impulse, and it now works in Le Mans Ultimate as well. Every session records automatically while you drive. Open it afterwards and the stint is already broken down across nine views: speed, brake and throttle heat maps on a track layout learnt from your own laps, corner detail, lap comparison, driving line, sectors and community laps.
The Coach is the part nothing else does. It reads your whole stint rather than one lucky lap, prices every corner in seconds, and names the cause: an over-slowed entry, a slow brake build, a lazy trail brake, coasting between the pedals, grip you are not using. Every finding comes with a target and what fixing it is worth. No other overlay app has an equivalent: RaceLab and iOverlay show you the race while it happens, and stop there.
Every overlay app can show your chat on screen. Track Impulse is the only overlay app with a built-in interactive iRacing Twitch bot: viewers type a command, and the bot answers in chat from the same live telemetry the overlays use, within a second or two. 14 commands: !fuel, !gap, !lap, !delta, !inc, !weather, !car, !track and more, plus !ir, !sr and !sof for iRacing ratings. Wear a heart rate monitor and !hr lets chat check your pulse three wide into T1.
The chat overlay itself merges Twitch and YouTube into one read-only feed over the sim, with a Featured card to pin a message on screen. Standalone chat bots for iRacing exist, but they are a second app to install and run. Here the bot lives inside the overlays: one install, next to your radar and relative.
Track Impulse Overlays can float inside your VR headset as well as on your monitor. The dash, radar spotter, fuel calculator, relative and battle bar sit in front of you in the cockpit, where you can read them at a glance. It works through SteamVR, it is off by default, and it is marked experimental in the app while feedback comes in. For a closer look at running iRacing overlays inside a headset, see the iRacing VR overlays page.
One rule decides whether the panels show: SteamVR has to be the program putting your sim's picture into the headset. That means a sim in SteamVR (OpenVR) mode, or in OpenXR mode with SteamVR set as the OpenXR runtime. The VR headset compatibility page lists every headset and sim VR mode by status: verified, should work but untested, or does not work and why.
Track Impulse draws the panels in its own window and hands them to SteamVR, which places them in the headset. No file goes into your sim and nothing runs inside it.
Every overlay has its own Show in VR switch, plus distance, position, turn, tilt, size and opacity, all separate from where it sits on your monitor.
Anchor a panel in the cockpit so it stays put as you look around, or have it follow your head. Panels turn to face you automatically.
Arrange VR panels shows the view from the driver's seat on your monitor. Drag, resize and push panels nearer or further with no headset plugged in. A connected headset follows every change live.
Press Alt+F11 to bring every cockpit-anchored panel back in front of wherever you are sitting, after you re-seat yourself or SteamVR recentres your view.
Dashboard, radar spotter, fuel, relative and battle bar start ticked for VR, and the rest stay off. A five-page setup guide opens the first time you switch it on.
Oculus mode does not show the panels, and neither do OpenXR runtimes that bypass SteamVR: Meta's own runtime for Quest Link and Air Link, Virtual Desktop's VDXR, Pimax OpenXR and Varjo. In those setups SteamVR never sees the picture. Verified in a headset so far: PSVR2, in SteamVR Home and in iRacing's OpenXR mode with SteamVR as the runtime. For PSVR2 settings that suit iRacing, see the PSVR2 iRacing guide.
Like any overlay in a headset, whichever app draws it, each panel uses a little graphics card time. Track Impulse only does that work when a panel's picture changes. VR is a Pro feature, $3 a month, and every Pro feature is free during the public beta. Setup is step by step in the overlays guide.
Track Impulse ships 25 overlays and the Performance Review app, plus up to 12 build-your-own widgets, each its own panel with its own job. Turn on the ones you want, place them where you want, leave the rest off. The panels run across fourteen sims, and the per-sim table is a straight yes or no for every one of them. Every panel is documented step by step in the overlays guide.
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 Alt+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, while spotting or in the garage. 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 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.
Track Impulse Overlays run in fourteen sims: iRacing, Le Mans Ultimate, Assetto Corsa Competizione, Assetto Corsa, Assetto Corsa EVO, Assetto Corsa Rally, Automobilista 2, RaceRoom, rFactor 2, F1 25, Euro Truck Simulator 2, BeamNG.drive, EA Sports WRC and DiRT Rally 2.0. The app detects which one you are running and switches automatically. Outside a supported sim the overlays stay hidden.
Three columns below are deliberately short. F1 25 publishes far less about a session than the circuit sims, so most of its column is a No. EA Sports WRC and DiRT Rally 2.0 are stage rally: one car alone, point to point, no roster and no lap that wraps, so the radar, relative, standings, battle bar and delta trace have nothing to read there. Both do publish a real rev limit and the car's own shift band, so the dashboard and shift light work properly.
Below is a table of which overlays are supported in which sim. For the two biggest Assetto Corsa audiences there are dedicated pages: the ACC overlays page covers every panel Assetto Corsa Competizione supports, and the Assetto Corsa overlays page covers AC, AC EVO and AC Rally.
| Overlay | iRacing | Le Mans Ultimate | rFactor 2 | ACC | Assetto Corsa | AC EVO | AC Rally | Automobilista 2 | RaceRoom | Euro Truck 2 | BeamNG | F1 25 | EA Sports WRC | DiRT Rally 2.0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Radar spotter | Yes | Yes | Yes | No | No | Yes | No | Yes | No | No | No | No | No | No |
| Dashboard | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Shift light | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Relative | Yes | Yes | Yes | Yes | No | No | No | Yes | Yes | No | No | No | No | No |
| Standings | Yes | Yes | Yes | Yes | No | No | No | Yes | Yes | No | No | No | No | No |
| Battle bar | Yes | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| Fuel calculator | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | No | No | Yes | No | No |
| Session info | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | Yes | No | No |
| Delta trace | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | No | No | No | No | No |
| Track map | Yes | No | No | No | No | No | No | No | No | No | No | No | Yes | No |
| Track strip | Yes | Yes | Yes | Yes | No | No | No | Yes | Yes | No | No | No | No | No |
| Drift meter | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | No | No | No | No | No |
| Lap review and heat maps | Yes | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| Pit helper | Yes | Yes | No | No | No | Yes | No | No | No | No | No | No | No | No |
| Race recap card | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | No | No | No |
| Privacy cover | Yes | Yes | Yes | No | No | No | No | Yes | Yes | No | No | No | No | No |
| Energy and stint panels | No | Yes | No | No | No | No | No | No | No | No | No | No | No | No |
| Build-your-own widgets | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Haptics HUD | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Twitch and YouTube chat | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Compared to RaceLab, iOverlay, irDashies, Edge Overlays and SimHub, Track Impulse covers 14 sims and reviews your laps with track heat maps and a corner coach. The free tier keeps everything that decides whether you crash: the radar spotter, relative, fuel calculator, standings and 12 more, free permanently, with no credit card and no quotas. iOverlay puts its radar behind Pro. iOverlay, irDashies and Edge run in iRacing only.
| Feature | Track Impulse | RaceLab | iOverlay | irDashies | Edge | SimHub |
|---|---|---|---|---|---|---|
| Price | Free, $3/mo Pro | Free, €4.90/mo Pro | Free, €4.95/mo or €29.95/yr | Free, open source | Free | Free, license from €8 |
| Free tier includes | Radar, relative, fuel, standings, dash, 11 more | Core overlays, with quotas | Standings, relative, fuel | Every widget | All overlays | Core, 10 fps cap |
| Supported sims | 14 sims | 8 sims | iRacing only | iRacing only | iRacing only | 100+ sims |
| Overlays in VR headset | Pro, built in, SteamVR, experimental | Yes, separate RaceLab VR installer, Pro | No, needs OpenKneeboard | Not documented | Yes, iRacing only | No, needs OVRdrop |
| Twitch chat bot | Pro, interactive | Chat display only | Chat display only | Chat display only | Not listed | Chat display only |
| Telemetry review: heat maps, line analysis, corner coach | Pro | No | No | No | Not listed | No |
| Live haptics HUD | Yes | No | No | No | No | No |
| Built-in bass shaker engine | Yes, low-latency | No | No | No | No | Yes |
| iRacing radar / spotter | Free, 3 modes | Yes | Pro only | Free, blind spot | Free | Community |
| Relative | Free | Free | Free | Free | Free | Community |
| Standings | Free | Free | Free | Free | Free | Community |
| Fuel calculator | Free | Yes | Free | Free | Free | Community |
| Setup | Ready to use | Ready to use | Ready to use | Ready to use | Ready to use | DIY dashboards |
Prices and features checked from each vendor's own site on 7 October 2026. Free tiers and paid plans change, so confirm at the source before you buy. RaceLab also sells a EUR 49.90 yearly plan and a EUR 399 lifetime licence. SimHub's licence is a one-time pay what you want with EUR 8 the lowest amount offered, and the free version's 10 fps cap applies to shaker output as well as dashboards. RaceLab does not publish which overlays sit in its free tier, so its rows say Yes where the overlay exists rather than guessing a tier. Cells marked Not listed could not be confirmed from the vendor's site. The VR row was checked on 17 September 2026: OVRdrop and OpenKneeboard are separate third-party apps, not part of SimHub or iOverlay. SimHub also drives bass shakers, so the difference there is low latency and the live haptics HUD, not haptics on their own.
Sixteen overlays are free, permanently. Every overlay that affects whether you crash is in the free tier, radar spotter included. Pro is the power tools: Performance Review, the live Coach, pit strategy, the streaming suite, overlays inside your VR headset, custom widgets and the Overlay Builder. No credit card for the free tier, no trial clock, and every Pro feature is unlocked during the overlays beta.
No credit card, no quotas, no trial clock. 16 free overlays, 14 of them in iRacing.
Cancel anytime. Everything in Free, plus:
Free during the overlays beta. Not on sale yet.
Every overlay is free during the overlays beta, Pro included, so you can use the whole suite before deciding. The haptic engine went on sale on 19 September 2026, but the overlays beta keeps running: we will give notice well before Pro needs a subscription. Bought the haptic engine with 6 months of Pro included? Those months start when the overlays beta ends, so you always get the full 6 months of paid Pro. Pro features are marked with a PRO chip in the app. There is no perpetual overlay licence: the free tier is genuinely free and stays that way, and Pro is a subscription that pays for the coaching engine behind it.
Overlay list, sim support and pricing on this page last reviewed , including VR headset support.
Install Track Impulse, tick the overlays during setup, and you have a full on-screen HUD plus low-latency bass shaker haptics. 16 overlays free permanently, every Pro feature free during the overlays beta, and the haptics free for 30 days. No credit card, just your email.