How to get the most bang for your buck while doing tuning orders. Link to spreadsheet with the part’s values calculated.
Other Car Mechanic Simulator 2021 Guides:
- Cheats
- Story Orders
- Car Parts List
- Engine Parts List
- Car List & Locations
- Best Value Tuning Shop Parts
- Default Parts & Locations
- All CMS21 Guides
Best Value Tuning Shop Parts
The best value performance parts are: Air Filters, Carburetors, Exhaust Manifolds, and Ignition parts (excluding the default “Ignition Coil”). For electric cars the Cables are a cheap boost too.
I found this out by creating a chart with all the tuning shop parts cost vs their performance gain.
It calculates each part’s value divided by its percent increase in the “Cost per %” column, lower being better.
You can right click the top of column D and sort sheet A-Z to organize the sheet by value instead of alphabetically if you prefer.
I created this to find out which parts give the most performance for the least cash, so I could be thrifty while doing tuning jobs. Hope it helps!
| Part | Price (CR) | Percent (+HP%) | Cost per % |
| Airfilter | 35 | 1 | 35 |
| Airfilter (I4 B) | 150 | 1.75 | 86 |
| Airfilter (I4 DOHC TAE) | 35 | 1.5 | 23 |
| Airfilter (I6 B) | 90 | 1.5 | 60 |
| Airfilter (I6 L24) | 150 | 1.5 | 100 |
| Airfilter (Type A) | 100 | 1.5 | 67 |
| Airfilter (V8 DOHC CGM) | 30 | 1.5 | 20 |
| Airfilter (V8 OHV F) | 48 | 1.5 | 32 |
| Airfilter (V8 SOHC FME) | 30 | 1.5 | 20 |
| Alternator | 300 | 1.5 | 200 |
| Alternator (I6 B) | 400 | 1.5 | 267 |
| Cable A (eDen-1H) | 150 | 2 | 75 |
| Cable A (Proton e-R) | 150 | 2 | 75 |
| Cable B (eDen-1H) | 150 | 2 | 75 |
| Cable B (Proton e-R) | 150 | 2 | 75 |
| Cable C (eDen-1H) | 150 | 2 | 75 |
| Camshaft | 600 | 3 | 200 |
| Camshaft (I3) | 440 | 2.5 | 176 |
| Camshaft (I4 B) | 500 | 3 | 167 |
| Camshaft (I4 SOHC) | 550 | 2.75 | 200 |
| Camshaft (I6 B) | 360 | 3 | 120 |
| Camshaft (V6 B) | 400 | 1 | 400 |
| Camshaft (V8 OHV C) | 200 | 2.75 | 73 |
| Camshaft (V8 OHV) | 550 | 2.75 | 200 |
| Camshaft (V8) | 660 | 3.3 | 200 |
| Carburetor (4 Barrel) | 375 | 12 | 31 |
| Carburetor (I6 B) | 210 | 3 | 70 |
| Carburetor B (V8 OHV E) | 310 | 6 | 52 |
| Carburetor C (V8 OHV E) | 350 | 5 | 70 |
| Catalytic Converter | 350 | 1.75 | 200 |
| Charger (eDen-1H) | 978 | 3 | 326 |
| Charging Inductor (Proton e-R) | 274 | 0.75 | 365 |
| Charging Rectifier (CHRG-e E1) | 105 | 0.75 | 140 |
| Charging Rectifier (Proton e-R) | 105 | 0.75 | 140 |
| Clutch Plate | 350 | 1.75 | 200 |
| Clutch Pressure Plate | 180 | 0.9 | 200 |
| Converter (CHRG-e E1) | 247 | 0.75 | 329 |
| Converter (Proton e-R) | 267 | 0.75 | 356 |
| Engine Head (I3) | 1700 | 7 | 243 |
| Engine Head (I4 B) | 2500 | 10 | 250 |
| Engine Head (I4 DOHC TAE) | 1800 | 3 | 600 |
| Engine Head (I4 SOHC D) | 1872 | 3 | 624 |
| Engine Head (I4 SOHC) | 1000 | 5 | 200 |
| Engine Head (I4 SR20) | 1973 | 3 | 658 |
| Engine Head (I4) | 1400 | 7 | 200 |
| Engine Head (I5 DOHC ADI) | 1400 | 3 | 467 |
| Engine Head (I6 B) | 1350 | 8 | 169 |
| Engine Head (I6 DOHC BU2 T) | 1841 | 3 | 614 |
| Engine Head (I6 DOHC FMW) | 1800 | 3 | 600 |
| Engine Head (I6 L24) | 1800 | 3 | 600 |
| Engine Head (V8 OHV F) | 1734 | 3 | 578 |
| Engine Head (V8 OHV) | 800 | 9 | 89 |
| Engine Head (V8) | 2000 | 10 | 200 |
| Engine Head A (V6 B) | 1600 | 7 | 229 |
| Engine Head A (V6 DOHC AKY) | 1750 | 3 | 583 |
| Engine Head A (V6 VQ37VHR) | 2077 | 3 | 692 |
| Engine Head A (V8 DOHC CGM) | 1800 | 3 | 600 |
| Engine Head A (V8 SOHC FME) | 1800 | 3 | 600 |
| Engine Head B (I3) | 1900 | 7 | 271 |
| Engine Head B (V6 B) | 1600 | 7 | 229 |
| Engine Head B (V6 DOHC AKY) | 1750 | 3 | 583 |
| Engine Head B (V6 VQ37VHR) | 1800 | 3 | 600 |
| Engine Head B (V8 DOHC CGM) | 1800 | 3 | 600 |
| Engine Head B (V8 SOHC FME) | 1800 | 3 | 600 |
| EV Battery Module | 2121 | 2 | 1061 |
| Exhaust Manifold | 150 | 3 | 50 |
| Exhaust Manifold (I3) | 375 | 3 | 125 |
| Exhaust Manifold (I4 B) | 160 | 4 | 40 |
| Exhaust Manifold (I4 DOHC TAE) | 472 | 4 | 118 |
| Exhaust Manifold (I4 SOHC D) | 351 | 4 | 88 |
| Exhaust Manifold (I4 SOHC) | 170 | 1.5 | 113 |
| Exhaust Manifold (I4 SR20) | 245 | 4 | 61 |
| Exhaust Manifold (I4 TURBO) | 210 | 1.05 | 200 |
| Exhaust Manifold (I5 DOHC ADI) | 247 | 4 | 62 |
| Exhaust Manifold (I6 B) | 80 | 3 | 27 |
| Exhaust Manifold (I6 DOHC BU2 T) | 117 | 4 | 29 |
| Exhaust Manifold (I6 L24) | 348 | 4 | 87 |
| Exhaust Manifold (V6 B) | 180 | 4 | 45 |
| Exhaust Manifold (V8 OHV D) | 350 | 2.5 | 140 |
| Exhaust Manifold (V8 OHV F) | 240 | 4 | 60 |
| Exhaust Manifold (V8 OHV) | 160 | 0.8 | 200 |
| Exhaust Manifold (V8) | 330 | 1.65 | 200 |
| Exhaust Manifold A (BU2) | 173 | 4 | 43 |
| Exhaust Manifold A (I6 DOHC FMW) | 207 | 4 | 52 |
| Exhaust Manifold A (V12) | 240 | 4 | 60 |
| Exhaust Manifold A (V6 DOHC AKY) | 200 | 4 | 50 |
| Exhaust Manifold A (V6 VQ37VHR) | 240 | 4 | 60 |
| Exhaust Manifold A (V8 SOHC FME) | 240 | 4 | 60 |
| Exhaust Manifold B (BU2) | 273 | 4 | 68 |
| Exhaust Manifold B (I6 DOHC FMW) | 207 | 4 | 52 |
| Exhaust Manifold B (V12) | 240 | 4 | 60 |
| Exhaust Pipe | 180 | 0.9 | 200 |
| Exhaust Pipe C | 140 | 1 | 140 |
| Flywheel | 650 | 3.25 | 200 |
| Front Exhaust Pipe (V8 OHV) | 170 | 2 | 85 |
| Front Exhaust Pipe (V8) | 300 | 1.5 | 200 |
| Front Exhaust Pipe B (V8) | 280 | 1.4 | 200 |
| Front Exhaust Section | 180 | 0.9 | 200 |
| Front Exhaust Section (I4 SOHC) | 135 | 1.5 | 90 |
| Front Exhaust Section (I6 B) | 160 | 1 | 160 |
| Front Exhaust Section (TURBO) | 220 | 1.1 | 200 |
| Front Exhaust Section (V8 OHV D) | 180 | 2 | 90 |
| Front Exhaust Section A (I3) | 160 | 2 | 80 |
| Front Exhaust Section A (V6 B) | 160 | 1 | 160 |
| Front Exhaust Section B (I3) | 160 | 2 | 80 |
| Front Exhaust Section B (V6 B) | 160 | 1 | 160 |
| Front Exhaust Section C (V6 B) | 440 | 1 | 440 |
| Front Exhaust Section D (V6 B) | 440 | 1 | 440 |
| Fuel Filter | 90 | 0.6 | 150 |
| Fuel Pump | 300 | 1.5 | 200 |
| Fuel Pump (I6 B) | 200 | 2 | 100 |
| Fuel Rail (I3) | 550 | 3 | 183 |
| Fuel Rail (I4 B) | 360 | 1 | 360 |
| Fuel Rail (I4 DOHC TAE) | 597 | 2 | 299 |
| Fuel Rail (I4 SR20) | 579 | 2 | 290 |
| Fuel Rail (I5 DOHC ADI) | 521 | 2 | 261 |
| Fuel Rail (I6 DOHC BU2 T) | 501 | 2 | 251 |
| Fuel Rail (I6 DOHC FMW) | 381 | 2 | 191 |
| Fuel Rail (V12) | 590 | 2 | 295 |
| Fuel Rail (V6 B) | 400 | 3 | 133 |
| Fuel Rail (V6 DOHC AKY) | 369 | 2 | 185 |
| Fuel Rail (V6 VQ37VHR) | 590 | 2 | 295 |
| Fuel Rail (V8 DOHC CGM) | 607 | 2 | 304 |
| Fuel Rail (V8 SOHC FME) | 590 | 2 | 295 |
| Fuel Rail DI | 950 | 4 | 238 |
| Fuel Rail MPI | 340 | 3 | 113 |
| Glow Plug | 25 | 0.13 | 192 |
| Ignition Coil | 180 | 0.75 | 240 |
| Ignition Coil (I4 SOHC) | 220 | 4.5 | 49 |
| Ignition Coil B | 280 | 4 | 70 |
| Ignition Distributor A | 120 | 5 | 24 |
| Ignition Distributor Cap | 75 | 1.5 | 50 |
| Ignition Distributor Rotor | 60 | 0.5 | 120 |
| Ignition Wires (I4 DOHC TAE) | 190 | 2 | 95 |
| Ignition Wires (I4 SOHC) | 150 | 0.75 | 200 |
| Ignition Wires (I6 B) | 150 | 1.25 | 120 |
| Ignition Wires (I6 L24) | 195 | 2 | 98 |
| Ignition Wires (V8 OHV F) | 205 | 2 | 103 |
| Ignition Wires (V8) | 120 | 1 | 120 |
| Intake Manifold (1 Carb) | 307 | 2 | 154 |
| Intake Manifold (2 Carb) | 550 | 2.75 | 200 |
| Intake Manifold (I3) | 600 | 3 | 200 |
| Intake Manifold (I4 B) | 840 | 3 | 280 |
| Intake Manifold (I6 B) | 300 | 3 | 100 |
| Intake Manifold A (V6 B) | 840 | 2 | 420 |
| Intake Manifold A (V6 VR38DETT) | 530 | 2 | 265 |
| Intake Manifold A (V6 VR38DETT) | 700 | 2 | 350 |
| Intake Manifold B (V6 B) | 400 | 1 | 400 |
| Intake Manifold I4 DI | 600 | 3 | 200 |
| Intake Manifold I4 MPI | 250 | 1.25 | 200 |
| Inverter (CHRG-e E1) | 197 | 1 | 197 |
| Inverter (Proton e-R) | 210 | 1 | 210 |
| Junction Box (CHRG-e E1) | 125 | 1.5 | 83 |
| Link Capacitor (CHRG-e E1) | 173 | 0.75 | 231 |
| Link Capacitor (Proton e-R) | 191 | 0.75 | 255 |
| Middle Muffler | 330 | 1.65 | 200 |
| Piston with Conrod | 225 | 1.13 | 199 |
| Piston with Conrod (V8 OHV C) | 225 | 1.13 | 199 |
| Power Electronics (eDen-1H) | 478 | 2 | 239 |
| Power Electronics Converter (CHRG-e E1) | 590 | 1.65 | 358 |
| Power Electronics Converter (Proton e-R) | 612 | 1 | 612 |
| Power Steering Pump (I4 B) | 300 | 1 | 300 |
| Power Steering Pump (I4) | 250 | 1.25 | 200 |
| Power Steering Pump (I6 B) | 200 | 1.5 | 133 |
| Power Steering Pump (V12) | 300 | 2 | 150 |
| Power Steering Pump (V6 B) | 250 | 2 | 125 |
| Power Steering Pump (V6 DOHC AKY) | 306 | 2 | 153 |
| Power Steering Pump (V8 OHV F) | 250 | 1.5 | 167 |
| Power Steering Pump (V8) | 300 | 1.5 | 200 |
| Rear Muffler | 200 | 1 | 200 |
| Rear Muffler (I4) | 400 | 2 | 200 |
| Rear Muffler (V8) | 700 | 3.5 | 200 |
| Rear Muffler 370Z | 600 | 4 | 150 |
| Rear Muffler A | 500 | 2 | 250 |
| Rear Muffler B (V8) | 800 | 3 | 267 |
| Rear Muffler F | 160 | 2 | 80 |
| Rear Muffler Fairlady Z | 320 | 2 | 160 |
| Rear Muffler GTR | 800 | 5 | 160 |
| Rear Muffler Silvia | 480 | 3 | 160 |
| Round Air Filter (1 Carb) | 80 | 1 | 80 |
| Round Air Filter (2 Carb) | 120 | 1.2 | 100 |
| Spark Plug | 25 | 0.13 | 192 |
| Throttle (BU2) | 305 | 1 | 305 |
| Throttle (I3) | 400 | 2.5 | 160 |
| Throttle (I4 SOHC D) | 460 | 1 | 460 |
| Throttle (I4 SR20) | 467 | 1 | 467 |
| Throttle (I4) | 310 | 3 | 103 |
| Throttle (I5 DOHC ADI) | 306 | 1 | 306 |
| Throttle (I6 DOHC BU2 T) | 343 | 1 | 343 |
| Throttle (I6 DOHC FMW) | 256 | 1 | 256 |
| Throttle (I6 DOHC FMW) | 460 | 1 | 460 |
| Throttle (V12) | 460 | 1 | 460 |
| Throttle (V6 B) | 500 | 2.75 | 182 |
| Throttle (V6 DOHC AKY) | 460 | 1 | 460 |
| Throttle (V6 VQ37VHR) | 507 | 1 | 507 |
| Throttle (V8 DOHC CGM) | 460 | 1 | 460 |
| Throttle (V8) | 330 | 1.65 | 200 |
| Turbo (V6 VR38DETT) | 1500 | 3 | 500 |
| Turbocharger | 1200 | 10 | 120 |
| Turbocharger (I3) | 1100 | 7 | 157 |
| Turbocharger (I4 B) | 1150 | 7 | 164 |
| Turbocharger (I4 SOHC D) | 803 | 3 | 268 |
| Turbocharger (I5 DOHC ADI) | 597 | 3 | 199 |
| Turbocharger (I6 DOHC BU2 T) | 802 | 3 | 267 |
More of this sort of thing:
- Car Mechanic Simulator 2021 All Car Parts List
- Car Mechanic Simulator 2021 All Engine Parts List
- Car Mechanic Simulator 2021 Guides and tips for beginners
- CMS 21 All Story Cars: Story Order Missions Walkthrough
- Car Mechanic Simulator 2021 Repair Bench Compendium
- How to Edit Cars using Car Editor in Car Mechanic Simulator 2021
How much does each star add to the tuning ??
Thanks for having the fortitude and infinite patience to document this!