Upgrade Reference

[GICheeze]

Table of Contents

This is provided for Forum discussions where access to the game is not available for reference.

• Engine & Power
  
  • Air Filter
    
    • Stock = K:
    • Street = S:
    • Sport = P:
    • Race = R:
  • Intake Manifold
  • Carburator
  • Fuel System
  • Ignition
  • Exhaust
  • Camshaft
  • Heads and Valves
  • Displacement
  • Pistons & Compression
  • Cooling
  • Flywheel
• Handling
  
  • Brakes
  • Suspension
  • Anti-Roll Bars
  • Chasis / Roll Cage
  • Weight Reduction
• Drivetrain
  
  • Clutch
  • Transmission
  • Driveshaft
  • Differential

[GICheeze]

Air Filter

• Air filter upgrades remove contaminates from the air entering the engine, help maintain cooler intake air temperatures, and help the engine breath more freely.

• S: Install a drop-in high-flow air filter element.
• P: Install high-flow cone air filters.
• R: Install a pressurized carbon-fiber cold air intake system, and a resonance tuned intake plenum.

[GICheeze]

Intake Manifold

• An upgraded intake manifold or throttle body provides smoother airflow and increased volume into the engine resulting in greater power.
• S: xx
• P: Install a ported intake manifold with intake runners port-matched to the cylinder head to ensure unimpeded airflow into the engine.
• R: Install individual tuned-length intake runners for each cylinder.  Install a carbon-fiber intake plenum between the intake manifold and air filter.

[GICheeze]

Carburator

• Carburator provide more efficient fuel flow and more precise timing as well as extracting more power from the fuel that you use.  These changes can be as simple as installing a jet kit, or as complex as changing the fuel pump and adding velocity stacks.
• S: Install jet kit, add phenolic carburator spacer to decrease heat transfer from engine to carb and alter the torque curve for better mid-high rpm power.
• P: Install a larger carburator to allow a higher air mass flow rate with high-volume fuel pump(s).  Add thin throttle shafts and low-drag butterflies to increase airflow through the carburator.
• R: Install a multi-carb setup with multi-choke racing carburators, and racing floats to ensure proper needle and seat operation under high G loads.  Install high-flow stainless braided fuel lines.  Install intake velocity stacks to optomize air speed and increase power.

[GICheeze]

Fuel System

Fuel system upgrades provide more efficient fuel flow and more precise timing, as well as extracting more power from the fuel you use.  These changes can be as simple as installing a reprogrammed ECU chip, or as complex as changing the fuel pump, tank, injectors and hoses.

• S: Reprogram stock ECU to improve power throught improved fueling.
• P: Install a piggyback fuel-management system, a high-flow fuel pump, rails, filters, and injectors.
• R: Install a custom racing electronic fuel-injection system, and optomize tuning for high-octane race fuel by installing twin racing fuel pumps, a foam filled racing fuel cell, and braided fuel hoses.

[GICheeze]

Weight Reduction

• A lighter car accellerates, brakes, and handles better than a heavier one.  Reducing weight by removing nonessential materials and replacing stock parts with lighter versions can increase performance in straight line and corner speeds.

• S: Remove spare tire and tool kit, and install a light weight battery.
• P: Remove entertainment system, any rear seats, airbag(s), power locks, power windows, and air conditioning system.
• R: Remove bumper beams and all interior trim and carpeting.  Strip and acid-dip the chasis.  Install a racing seat and harness.

[GICheeze]

Chasis and Roll Cage

• Installation of chasis reinforcements strut tower bars, subframe braces, and full roll cages increase the overall rigidity of your car, reduce chasis flex, and allow the suspension to work to its full potential.

• S: Install or upgrade front strut tower bar.
• P: Install or upgrade front and rear strut tower bars and lower subframe bar.
• R: Seam weld the chasis and install roll cage to link all critical areas providing maximum safety and stiffness.

[GICheeze]

Anti Roll Bars

• Anti-Roll Bars provide extra stability when cornering.  By tying the left and right sides of the suspension together, anti-roll bars make the car ride more level and reduce body roll.  Adjustable anti-roll bars can help reduce or induce oversteer.

• S: xx
• P: Install hollow anti-roll bars with solid links and polyurethane bushings.
• R: Install hollow blade-type anti-roll bars with solid end-links and aluminum block mounts.   ADJUSTABLE

[GICheeze]

Clutch

The clutch is the vital link between the engine and the transmission. Upgrades increase its ability to handle the extra torque of a racing engine without damage.

• S: Install a street clutch disc and plate to increase the torque capacity of the clutch.
• P: Install a sport clutch disc with solid centre and high-pressure plate to further increase the torque capacity of the clutch.
• R: Install a low-inertia multi-plate racing clutch to maximise the torque capacity of the clutch and reduce shift times.

Submitted by MJR

[GICheeze]

Driveshaft

You can improve throttle response and acceleration by decreasing the weight and rotational inertia of the driveshaft.

• S: Install an alloy-steel driveshaft to decrease driveline inertia and overall car weight.
• P: Install an aluminium driveshaft to further decrease driveline inertia and overall car weight.
• R: Install an carbon-fibre driveshaft to further decrease driveline inertia and overall car weight.

Submitted by MJR

[GICheeze]

Transmission

The transmission transmits your car's power from the engine to the drive wheels.  Transmission upgrades can make shifts quicker and more efficient, reduce friction and power loss, and provide better durability.

• S: Install a short-throw shifter that decreases the amount of hand movement needed to shift. Add synthetic gear oil to reduce gearbox friction.
• P: Install a hardened, straight-cut dog-engagement gear set for greater durability and increase efficiency. Replace shift linkage bushings with solid bearings for more direct feel and quicker shift times.  ** ADJUSTABLE ** FD only
• R: Install a six-speed sequential racing gearbox, with shot-peened, straight-cut gears, dog-engagement, and interchangeable ratios. This durable, highly specialised racing transmission can cope with the increased power, torque and abuse of the racing environment. ** ADJUSTABLE **

Submitted by MJR

[GICheeze]

Camshaft

Upgraded camshafts let your engine breathe more freely and rev to a higher rpm, producing more torque and power. The net result is a higher redline and more power in the high-rpm range.

• S: Install mild aftermarket cam(s), which feature higher lift and greater duration.
• P: Install aggressive high lift, high duration cams(s), and degreed pulley(s) for optimised cam timing. Install performance valve springs.
• R: Install hollow racing camshaft(s), which feature micropolished cam lobes and solid lifters. Install lightweight race valve springs and titanium retainers.

Submitted by MJR

[GICheeze]

Displacement

Displacement upgrades make the engine more durable. They can also reduce friction and interia, and make the engine more powerful and responsive.

• S: Blueprint block and balance rotating assembly. Overbore and CC combustion chamber.
• P: Overbore engine block and install balanced stroker crankshaft. Install heavy-duty cromoly rods.
• R: Further bore and stroke the engine block, reinforce the deck, and resleeve cylinders. Install forged knife-edge stroker crankshaft.

Submitted by MJR

[GICheeze]

Flywheel

The rotating mass of the flywheel smoothes and steadies the rotation of the engine, but decreases throttle response and acceleration. Upgrading to a lighter-weight flywheel allows the engine to respond to the throttle more quickly and increase RPM faster, providing better acceleration.

• S: Install a forged-steel flywheel, machined for reduced weight and inertia to improve acceleration and throttle response.
• P: Install a lightweight aluminium flywheel to improve acceleration and throttle response by decreasing mass and rotational inertia.
• R: Install an ultra-light steel small-diameter flywheel to further improve acceleration and throttle response.

Submitted by MJR

[GICheeze]

Ignition

• Ignition upgrades help the engine burn fuel more efficiently to produce more power.  Adding better coils, spark plugs, and ignition wires can make a significant difference in engine power and car performance.
• S: Install silicon-insulated ignition wires with high-performance spark plugs.
• P: Install capacitive-discharge coil pack, heat range optomized spark plugs and grounded ignition wires.  Optomize timing advance curve.
• R: Install crank-fired racing ignition and individual race coils per cylinder.  Add knock sensor for adaptive timing control.