Pops and Bangs / RevLimiter Popcorn — Crackle Map (Gasoline) & Popcorn Limiter (Diesel)

Pops and Bangs tuning and RevLimiter Popcorn calibration by TuningBot deliver two of the most requested sound-performance features in ECU remapping.
Pops and Bangs (also called Crackle Map) enhances the exhaust sound of gasoline engines, while RevLimiter Popcorn reshapes diesel limiter behavior to emulate a rhythmic hard-cut sound.
Both are engineered safely for track or off-road use, maintaining full engine protections.
Below you’ll find detailed explanations and live ECU service lists for each feature.

Pops and Bangs (Gasoline) — Crackle Map

On gasoline engines, Pops and Bangs modifies spark timing and overrun fueling so that part of the combustion occurs inside the exhaust manifold.
The result is the famous crackle, burble and overrun pop you hear on performance cars.
Proper calibration also maintains turbo speed during throttle lift, reducing lag and improving throttle response.

Requirements & Best Practice (Gasoline)

• Use with a performance exhaust or decat; OEM catalysts and GPF filters can overheat.
• Test only when engine oil and coolant are at normal operating temperature.
• Moderate intensity to protect turbo, manifold and catalyst.
• Keep OEM knock, EGT and torque protections active.

RevLimiter Popcorn (Diesel)

On diesel engines, Popcorn tuning is achieved by shaping the ECU’s rev-limit logic.
Instead of spark ignition, the ECU adjusts torque and injection cut frequency to create a rhythmic, pulsing limiter sound.
The effect is similar to a gasoline hard-cut but safe for compression-ignition operation when properly managed.
TuningBot calibrations coordinate torque, smoke and EGT controls for consistent results.

Requirements & Best Practice (Diesel)

• Avoid aggressive popcorn on DPF-equipped cars; excess fuel may overheat the filter.
• Keep smoke, torque and EGT limiters active.
• Check logs for rail pressure, boost and EGT after tuning.
• Use only on mechanically healthy engines and injectors.

Technical background

Both Pops and Bangs and RevLimiter Popcorn rely on altering overrun and limiter strategies inside the ECU.
Gasoline versions use ignition retard and minimal post-injection, while diesel versions modify torque targets and limiter hysteresis.
Each requires intimate knowledge of engine management to maintain safety margins.
Poorly executed versions can cause excessive heat, detonation or turbo stress — which is why every TuningBot calibration is bench-validated and dyno-tested.

Safety & legal notes

These calibrations are intended for motorsport or off-road use only, or where local law explicitly allows them.
Continuous crackle or popcorn use can raise exhaust temperatures; always ensure OEM EGT and torque protections remain active.
Misuse on public roads may violate noise or emission regulations.

Available Services

The following tables list ECU types currently supported for both Pops and Bangs (gasoline) and RevLimiter Popcorn (diesel):

Pops and Bangs (Gasoline)

Controlled overrun fueling and spark retard with configurable RPM windows, intensity levels and turbo protection strategies.

Pop_Bang — Supported ECU

RevLimiter Popcorn (Diesel)

ECU limiter recalibration with torque/smoke/EGT balancing.
Produces a rhythmic popcorn sound at high RPM while keeping mechanical safety intact.

RevLimiter — Supported ECU

Usage checklist

• Run tests only with the engine fully warm.
• Use exhaust hardware rated for higher thermal load.
• Log RPM, lambda or EGT (gasoline) and rail/boost/EGT (diesel).
• For GPF/DPF cars, comply with local emission laws before modification.

*** For custom intensity, gear-based activation or switchable maps, contact the TuningBot support team.