Track Impulse v0.6.201: new dual-band suspension with auto-calibration, spatial engine rumble, advanced waveform/priority options, and more
For those who haven't seen it before: Track Impulse is in free beta and is a standalone haptic engine for bass shakers. It reads iRacing's telemetry at 360Hz and outputs directly via ASIO or WDM-KS, bypassing the Windows audio stack. End-to-end latency is 5-19ms depending on your audio interface, compared to 100ms+ from standard haptic software. You feel what the car is doing as it happens, not a tenth of a second later.
We just released v0.6.201, and this one has a lot in it.
Dual Band Suspension now on iRacing
New dual-band suspension system
The old suspension was a single band reading shock velocity. It worked well, but everything from a small road seam to a big compression event came through the same channel with the same character. It felt flat.
The new system splits suspension into two separate effects that layer on top of each other:
Fast / Shock Suspension picks up fast events: road seams, expansion joints, small bumps, surface texture changes. It uses a steep response curve that suppresses noise but reacts hard to genuine impacts and renders the bass shaker signal across a range of frequency.
Slow / Spring Suspension picks up big chassis events: body roll through corners, weight transfer under braking, dive, heave, compression over crests which also renders the bass shaker signal across a range of frequency
Kerb detection: has also been improved with various tweaks to make it more accurate. The effect now switches on and off cleanly when you ride a kerb, with no residual vibration lingering after you leave it.
Auto-calibrating suspension thresholds:
The defaults are well tuned out of the box, but every car and track combination has a different velocity profile. Track Impulse now auto-calibrates as you drive. It collects data samples during your session, computes percentile-based thresholds at lap completion, and adjusts the dead zones and ceiling to match what the car is actually doing on that track.
Calibrated values are stored per car and track in INI files, so the system doesn't have to recalibrate every time you come back to the same combination. It just loads and goes.
Spatial engine rumble:
Engine vibration is no longer a flat identical signal to all four corners. It now oscillates spatially across your shakers, driven by torque reaction roll (left/right movement) and throttle position (front/rear bias) as well as an idle effect. If you have shakers on all four corners, the engine vibration physically moves around the chassis as you apply and release throttle. It adds a sense of mechanical presence that a static signal can't match.
Advanced effect options:
Each effect now has an advanced settings panel with:
Waveform selection: choose between sine, square, sawtooth, or noise per effect. Square and sawtooth give sharper attack for impacts. Noise adds broadband texture for road feel if for instance you have a dedicated road texture shaker.
Priority and ducking: set which effects take precedence when multiple fire at once. Higher priority effects duck lower ones so nothing gets lost in a wall of vibration.
Auto-updates:
Track Impulse now checks for updates on startup and notifies you when a new version is available. Updates are downloaded and verified with signatures. You can also check manually from Settings.
WASAPI Exclusive mode:
Added as a third audio driver option alongside ASIO and WDM-KS. If your sound card has unreliable WDM-KS drivers, WASAPI Exclusive gives you low-latency output with pro-audio thread priority. The device wizard now shows which driver types each device supports and recommends the fastest option.
Smarter device detection:
The device list now filters out HDMI outputs, Bluetooth headsets, SPDIF, and headphones automatically. Disconnected or disabled devices no longer show up. API badges (ASIO / WDM-KS / WASAPI) appear next to each device so you know what you're working with.
Other improvements:
New Setup Guide in the toolbar walks you through device config, zone mapping, and channel routing step by step. Comprehensive online User Guide covering installation through troubleshooting. Adding a new output zone now defaults its routing to 100% instead of silent, and a LOT of other little fixes and improvements.
Happy to answer any questions about setup or tuning.
Posted May 8, 2026, 3:49 PM UTC