Car Tuning Chiptuning 2

Question 1

What is 'stage 2' chiptuning typically associated with?

Accepted Answer

Hardware upgrades like intake/exhaust combined with a remap

Answer

Stage 2 tuning combines supporting hardware modifications (intake, exhaust, intercooler) with an ECU remap to safely increase power beyond stage 1 limits.

Question 2

Which sensor is most critical for the ECU to calculate ignition timing correctly?

Accepted Answer

Crankshaft position sensor

Answer

The crankshaft position sensor tells the ECU the exact rotational position of the crank, which is essential for precise ignition timing.

Question 3

What does 'knock retard' mean in ECU tuning?

Accepted Answer

Retarding ignition timing when the knock sensor detects detonation

Answer

Knock retard is when the ECU pulls ignition timing back to prevent engine-damaging detonation after the knock sensor fires.

Question 4

What is the primary purpose of a wideband O2 sensor in tuning?

Accepted Answer

To provide accurate air-fuel ratio data across the full lambda range

Answer

A wideband O2 sensor measures AFR accurately across lean and rich conditions, giving tuners precise lambda data needed to optimize fuel maps.

Question 5

In forced induction chiptuning, what is 'boost creep'?

Accepted Answer

Boost pressure exceeding the target level because the wastegate can't flow enough exhaust

Answer

Boost creep occurs when exhaust flow overwhelms a stock wastegate, causing uncontrolled boost rise above the target pressure.

Car Tuning Practice Test

Car Tuning Practice Test

Car Tuning Chiptuning 2