TuneWorks

Use this free tool without authentication to calculate an ethanol blend for a fresh tank, existing fuel, correction, or ratio. Uses the website calculation. Percentages are 0–100; all volumes use the selected unit. Supply tested source ethanol contents. Fresh needs finalVolume; existing needs finalVolume/currentVolume/currentEthanol; correct needs tankCapacity/currentVolume/currentEthanol; ratio needs no volumes. No account data is read or saved.

calculate_ethanol_blend

Use this free tool without authentication. Estimate injector size from horsepower, fuel type, injector count, and duty cycle. Uses the same calculation as the TuneWorks website; does not read or save account data. Supply measured inputs, not example defaults. This is a sizing estimate. Confirm with your tuner and fuel pressure data.

calculate_fuel_injector_size

Use this free tool without authentication. Check speed, RPM, and shift drop from tire size, final drive, and gear ratio. Uses the same calculation as the TuneWorks website; does not read or save account data. Supply measured inputs, not example defaults. Use measured tire diameter when possible. Tire growth and converter/clutch slip can move real-world numbers.

calculate_gear_ratio_speed

Use this when the user wants to choose existing TuneWorks vehicles, setups, and sessions for Share Build.

get_share_build_options

Use this when the user asks what TuneWorks can do with free public tools or with their connected garage, vehicles, setups, sessions, maintenance, shop lists, Share Build, and log history.

get_tuneworks_app_capabilities

Use this when the user asks for an overview of their TuneWorks garage, recent activity, saved vehicles, setups, sessions, maintenance, or lists.

get_garage_summary

Use this when the user asks about one saved TuneWorks vehicle, including its setup, session, maintenance, list, or log context.

get_vehicle_context

Use this free tool without authentication. Compare two laps or sector sets and see the best theoretical lap. Uses the same calculation as the TuneWorks website; does not read or save account data. Supply measured inputs, not example defaults. Use sectors from timing, video, or data logs. Compare similar conditions before blaming setup.

calculate_lap_time_delta

Use this when the user asks for service reminders, maintenance history, due work, or completed maintenance saved in TuneWorks.

list_maintenance

Use this when the user asks for driving sessions, events, track days, autocross runs, or session notes saved in TuneWorks.

list_sessions

Use this when the user asks for chassis setups or setup history saved in their signed-in TuneWorks app account.

list_setups

Use this when the user asks for reusable shop lists, event prep lists, task lists, or parts lists saved in TuneWorks.

list_shop_lists

Use this when the user asks to see, choose, or reference vehicles saved in their TuneWorks app garage.

list_vehicles

Use this before sending Share Build to summarize the selected vehicle, setups, sessions, recipients, and message.

preview_share_build

Use this free tool without authentication. Check camber and total toe against broad autocross and track baseline ranges. Uses the same calculation as the TuneWorks website; does not read or save account data. Supply measured inputs, not example defaults. This is a baseline checker, not a vehicle-specific prescription. Tire wear and driver feedback decide the next step.

check_race_alignment

Use this without authentication for a bounded shock/damper adjustment recommendation. It does not access TuneWorks account data.

recommend_autocross_damper_adjustment

Use this only after explicit user confirmation to email selected TuneWorks vehicle, setup, and session details to up to 3 recipients.

send_share_build

Use this free tool without authentication. Convert spring rate and motion ratio into wheel rate for setup comparisons. Uses the same calculation as the TuneWorks website; does not read or save account data. Supply measured inputs, not example defaults. Wheel rate compares spring changes. It does not account for bars, bump stops, tires, or aero load.

calculate_spring_wheel_rate

Use this free tool without authentication. Turn cold, hot, and target hot pressures into the next cold pressure to try. Uses the same calculation as the TuneWorks website; does not read or save account data. Supply measured inputs, not example defaults. This gives a next-test pressure, not a universal ideal. Recheck after the next run.

calculate_tire_pressure_adjustment

Use this free tool without authentication. Compare tire diameter, circumference, ride height, and speedometer change. Uses the same calculation as the TuneWorks website; does not read or save account data. Supply measured inputs, not example defaults. Actual mounted diameter changes by tire model and pressure. Use manufacturer specs when available.

compare_tire_sizes

Use this when the connected user explicitly asks to edit a TuneWorks maintenance reminder/service item. Deletes are not supported.

update_maintenance

Use this when the connected user explicitly asks to edit an existing TuneWorks driving session. Deletes are not supported.

update_session

Use this when the connected user explicitly asks to edit an existing TuneWorks setup revision. Deletes are not supported.

update_setup

Use this when the connected user explicitly asks to edit a TuneWorks shop list, task list, or parts list. Deletes are not supported.

update_shop_list

Use this when the connected user explicitly asks to edit an existing TuneWorks vehicle. Deletes are not supported.

update_vehicle