V2 Update! Delete 1.5! What's new:

Diesel support:Load a diesel and the ECU switches over completely. More fuel makes more power until you run out of air, then it's just smoke and heat. Add boost and rail pressure to fuel cleanly.

Nitrous:Functional progressive nitrous. Set the shot size, extra fuel, and timing pull. Feed it right and it makes clean power; run it lean or dry and it knocks

Launch and shifting:

2-step launch sound

Flat-foot / no-lift shifting: keep the throttle pinned through the gears and the turbo stays spooled (BETA still need some work)

Rolling anti-lag: bind a button, hold it to load boost at a set RPM, release to launch

Data logging:A proper datalogger now. Stacked channel lanes, scrub through your pull, zoom in, colored markers showing where you knocked, leaned, or overboosted, and CSV export of the whole log (because why not)

EGT gauge:Exhaust gas temperature with a protection limit. Lean mixtures and pulled timing run it hot.

Engine size aware:The ECU reads your displacement and cylinder count, so V8s and big engines behave correctly instead of using small-engine math.

Dyno: Auto-pull now lets you set the start gear and start RPM for clean, repeatable before/after pulls.

Also: more ignition retard range (down to -20°), new in game lessons for EGT, datalogs, nitrous, and a full diesel chapter, plus a range of fixes and polish.

Note: rolling anti-lag uses a key you bind once in Options > Controls > Vehicle > "OE ProTune Rolling Anti-Lag".