#1
What is the primary purpose of aftermarket performance parts?
To replace broken OEM parts
To enhance the appearance of the vehicle
To improve vehicle performance
To decrease fuel efficiency
#2
What role does a cold air intake system play in engine performance?
Increases engine temperature
Reduces air flow to the engine
Increases the amount of oxygen available for combustion
Lowers the vehicle's center of gravity
#3
What is the primary purpose of a strut bar in a vehicle?
To improve the vehicle's audio system
To enhance the interior lighting
To increase the rigidity of the vehicle's chassis
To decrease the vehicle's weight
#4
Which of the following is a common reason for upgrading to performance spark plugs?
To improve the vehicle's paint finish
To enhance fuel economy
To ensure more consistent ignition and combustion
To increase the brightness of headlights
#5
What is the purpose of an oil cooler in high-performance engines?
To warm up the oil faster
To decrease oil volume
To reduce oil temperature, enhancing lubrication
To increase oil pressure
#6
Which component is commonly upgraded to improve engine breathing?
Battery
Air intake system
Seat covers
Windshield wipers
#7
What does ECU tuning primarily alter in a vehicle?
Exterior lights
Seat positions
Engine performance characteristics
Tire pressure
#8
Which automotive part is essential for reducing toxic emissions from an internal combustion engine?
Spoiler
Catalytic converter
Turbocharger
Subwoofer
#9
What is the primary function of a performance exhaust system?
To make the car louder
To improve fuel efficiency
To increase backpressure
To reduce exhaust backpressure and increase flow
#10
What effect does a larger diameter throttle body have on engine performance?
Decreases air flow
Increases air flow
Lowers the engine's operating temperature
Increases fuel consumption without improving performance
#11
Why are ceramic brake pads preferred in high-performance applications over standard brake pads?
They are cheaper than standard brake pads
They produce more brake dust
They offer better heat dissipation and less fade
They increase the vehicle's top speed
#12
What is the primary benefit of a high-flow catalytic converter compared to a standard catalytic converter?
It increases exhaust noise significantly
It decreases vehicle performance
It reduces emissions more effectively
It allows for increased exhaust flow, improving performance
#13
Which type of suspension modification can increase cornering performance by reducing body roll?
Lowering springs
Off-road tires
Chrome rims
Seat belt extenders
#14
What is the primary effect of installing a larger turbocharger in a turbocharged engine?
Reduced engine noise
Increased fuel economy
Decreased acceleration
Increased potential for higher power output
#15
What advantage does coilover suspension offer over traditional spring and shock setups?
Cheaper cost
Adjustable ride height and damping
Increased weight
Simpler installation
#16
In performance tuning, what is 'boost' commonly referring to?
The pressure in the fuel tank
The acceleration rate of the vehicle
The pressure increase produced by a turbocharger or supercharger
The brightness of the headlights
#17
How does a limited-slip differential (LSD) improve vehicle performance compared to a standard differential?
By locking the front wheels during turns
By reducing the vehicle's overall weight
By distributing power more evenly between wheels when traction differs
By increasing the engine's horsepower
#18
What is the main purpose of installing an aftermarket high-performance fuel injector?
To decrease fuel usage
To increase the size of the fuel tank
To provide a higher rate of fuel flow
To reduce the vehicle's emissions
#19
What is the main purpose of a blow-off valve (BOV) in turbocharged engines?
To increase turbo lag
To decrease engine power
To release excess turbo pressure, preventing damage
To reduce the effectiveness of the turbocharger