Tuning Simulator
Tuning Simulator app icon

Learn to tune an engine.
Without breaking yours.

A simulated engine on a dyno, run by a standalone ECU you tune yourself. Change the fuel map, the timing or the boost and watch what happens to the power curve, the mixture and the knock sensor.

Coming soon to the App Store Support
The dyno screen: a turbo four mid-pull with its power curve drawing

It behaves like the real thing

The engine model runs every combustion event. Lean it out and it misfires. Add too much timing and it knocks, then cracks a piston. Fit bigger injectors without telling the ECU and it floods.

A real ECU

Fuel VE, lambda targets, ignition, boost control, idle, warmup, cranking, accel enrichment, knock control, closed loop and limiters. Tables you can select, drag and type into.

Ten engines

Fours, a flat four, straight sixes, V6s and V8s. Naturally aspirated, turbo, twin turbo, supercharged and nitrous.

Nearly 100 parts

Injectors, pumps, lines, regulators, turbos, housings, wastegates, blowers, cams, pistons, rods, gaskets and fuels, E85 included. Every part changes how the engine behaves.

Dyno and logs

Hold any rpm or do a full pull. Every run is logged, and you can lay the log over any table to see which cells ran lean or knocked.

Things break

Knock cracks pistons, over-revving floats valves, too much boost lifts the head gasket, and a hungry turbo can shatter. Each engine has its own health readout.

Game Center

Leaderboards for peak horsepower and horsepower per litre. A pull only counts if the engine is still alive five seconds later.

See it for yourself

Fuel VE table with the log overlaid on the cells
Your log laid over the fuel table, cell by cell.
Career mode job board
Career mode: customers, faults, deadlines and Dyno Day.
Garage with a supercharged V8
Build it up in the garage. The ECU does not know until you tell it.
Data log with rpm, MAP, lambda, ignition and more
Zoom into any moment of the log.
The guided tutorial on a broken project car
A guided tutorial walks a broken project car through a full tune.

Run your own tuning shop

Career mode starts you with a rented unit, a small dyno, a stock project car and $1,500. Customers bring in cars with vacuum leaks, tired fuel pumps, stuck wastegates, burnt valves and lying sensors, or ask for a power target on a budget. Find the fault, fix it, tune it and hand it back for a test drive that grades your work.

Ten kinds of job

Diagnosis, base tunes, power targets, economy, E85 conversions, race class builds, blown engine rescues, multi-fault nightmares, nitrous installs and legend builds.

Regular customers

Eight story customers bring the same car back chapter after chapter, with your parts and your tune still on it.

Grow the shop

Buy diagnostic tools, a bigger dyno, more bays and a parts discount. Pay the rent every Monday. Beat the rival shops at Dyno Day every Saturday.

Free to start

Download it free and tune the Turbo Four as much as you like, with the full guided tutorial. One purchase unlocks the rest.

Free

$0

  • The Turbo Four with every part and every table
  • The guided project car tutorial
  • Dyno, logs and Game Center leaderboards

Tuning Simulator Pro

$14.99

  • All ten engines
  • Custom builds: any block, any induction
  • Every lesson
  • Career mode
  • One purchase, no subscription