Model Engine Builder vs Tuning Simulator

Build an engine, bring it to life and keep it in your own pixel-art workshop. Model Engine Builder combines hands-on assembly challenges with engine inspections and an untimed Free Run. BUILD IN FOUR STAGES Fit the parts, tighten the bolts, adjust the setup and time the ignition. Your four stage scores make a build total from 0 to 1000, with online leaderboards. RUN YOUR OWN ENGINE After building, select your engine in the workshop and try Free Run. Control the throttle and engine load, start or stop the engine, and watch its revs, heat and vibration without a time limit. Control and Response inspections are separate scored tests: pass all their segments to earn shelf stamps. Test results and Free Run do not change your build score. 12 ENGINES, 4 READY TO PLAY Four engines start unlocked, including the inline two-stroke twin. The other eight, including the V12, can each be unlocked on this device by completing an optional rewarded ad when available. A one-time, non-consumable Remove Ads purchase unlocks all 12 engines and removes ads. It is not a subscription. Build and run unlocked engines offline without a separate game account. Ads, purchases and online leaderboards require an internet connection; leaderboards may require platform sign-in. Progress is stored on your device. Engine behavior and displayed readings are game approximations, not real engineering measurements.

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. 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. THE ECU - Fuel VE, lambda targets, ignition, boost target and wastegate duty, idle, warmup, cranking, accel enrichment and dead times - Closed loop, knock control, rev and boost limiters, auto learn and "Fix from pull" - Select cells, drag curves, type values, interpolate and smooth, in a grid or in 3D - Lay the data log over any table and see which cells ran lean or knocked THE ENGINES - 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, head gaskets and fuels, E85 included THE DYNO - Hold any rpm at any throttle, or do a full wide open throttle pull - Power, torque, mixture, boost and timing on every run - A full data log you can zoom into - Engine health: knock, over-revving, boost and heat all wear parts out, and some failures are sudden CAREER MODE Start 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, from base tunes to E85 conversions, race class builds and blown engine rescues - Eight regulars who bring the same car back chapter after chapter, with your parts and tune still on it - Diagnostic tools, a bigger dyno, more bays, weather, deadlines and rent - Dyno Day every Saturday against rival shops, and 23 achievements LEARN A guided tutorial takes a broken project car from flooding on the stand to a full tune. Twelve more lessons cover VE tuning, MBT, knock, boost control, injector swaps, fuel system limits, E85, nitrous, big cam idle and cold starts. GAME CENTER Leaderboards for peak horsepower and horsepower per litre. A pull only counts if the engine is still alive five seconds later. FREE AND PRO The Turbo Four and the guided tutorial are free, with every part and every table. Tuning Simulator Pro is a one-time purchase that unlocks all ten engines, custom builds, every lesson and Career mode. No subscription, no ads, no account.