ROB RUN car performance parts can turn a difficult getaway into a clean escape, but buying the wrong upgrade too early wastes cash. The ECU, Turbo Kit, Intercooler, Steering Rack, and Racing Rotor each improve a different driving stat, while installed parts remain on the car after death. If you are planning your next build, keep some ROB RUN Cash ready, then check the research cost and district tier before spending.

How Car Performance Parts Work

Parts are researched through Larry's Tree and purchased on the Trade Laptop. A part becomes available after the matching car has been unlocked, so progressing through the vehicle chain opens more upgrade choices. You also need an owned house and an owned car, because rented vehicles cannot accept parts.

Installing an upgrade is simple. Open the hood of your owned car, drag the part from your bag into its matching slot, and inspect the car key card to see the change to speed, acceleration, or handling. Each upgrade line has multiple levels, and the next level requires the previous one before it can be researched.

ECU, Turbo, Intercooler, and Handling Prices

The ECU controls top speed. The base ECU is tier 1, costs 30,000 to research, and costs 14,000 to buy. The Improved ECU is tier 2, with a 160,000 research cost and a 75,000 purchase price. The High-performance ECU is tier 3, requiring 260,000 for research and 330,000 to buy.

Acceleration comes from two upgrade lines. The tier 2 Turbo Kit costs 110,000 to research and 79,500 to purchase, while the Improved Turbo Kit costs 210,000 to research and 238,000 to purchase at tier 3. The Intercooler costs 120,000 to research and 72,000 to buy at tier 2, followed by the Improved Intercooler at 200,000 research and 270,000 purchase cost.

Handling uses the Steering Rack and Racing Rotor lines. The tier 2 Steering Rack costs 100,000 to research and 68,000 to buy. The Reinforced Steering Rack costs 220,000 to research and 270,000 to buy at tier 3. The Racing Rotor costs 100,000 to research and 61,500 to purchase at tier 2, but it also needs 75 years of sentence before unlocking.

Sentence Requirements and District Tiers

The Racing Rotor may remain hidden behind a question mark if your character has never served time. Authority is the total sentence connected to this requirement, and it remains on the character after a wipe, so earlier jail time still counts. Having enough cash alone won't unlock the Rotor.

Your plot controls the vendor tier. No plot provides tier 1 access, a plot in a level 2 district provides tier 2, and a level 3 district provides tier 3. The house itself does not raise the tier, and research prices can differ between servers, so always check the current in-game price before planning a complete build.

Best Upgrade Order for a New Car

For most players, the base ECU is the best starting point because its 14,000 purchase price is low and the speed increase helps during every escape. After that, choose either the Turbo Kit or Intercooler if your routes include frequent turns, stops, and restarts. Acceleration is especially useful when escaping through the city rather than driving long, straight roads.

Add handling when a fast car feels difficult to control. The Steering Rack is a practical early handling choice, while the Racing Rotor should wait until its sentence requirement is met. Don't place expensive tier 3 parts on a vehicle you are about to replace.

Timing Purchases Around the Raid

The weekly Federal Raid resets plots, bases, weapons, and cash, including money stored in the bank. It also converts wealth into jail time and Authority. If the raid is close, spending hundreds of thousands on a tier 3 upgrade may give you very little time to recover its value.

Early in a server cycle, permanent car upgrades are easier to justify because they can improve many jobs before the reset. A purchased car also remains after death, and its installed parts stay with it, so a failed job doesn't remove the upgrade investment during that cycle.

Common Mistakes to Avoid

Don't install parts on a rented vehicle, and don't assume the house level changes the vendor tier. Check the car's key card after installation, since handling may matter more than raw speed on a difficult route. Also remember that police operate in Looty Bay, not settlements, and criminals must drive loot out of the city to keep it.

Better acceleration and handling help break contact before an arrest. Police receive 2,000 for seizing vehicle loot and 9,000 to 15,000 for an arrest, so a reliable escape protects both the cargo and the crew. Match the upgrade to the car, the route, and the time remaining before the reset, then spend your ROB RUN Money/Cash carefully.