Gas Pedal Delay

Originally Posted by 6spd

from what has been documented ever since electronic throttles became instituted in just about everything, the real culprit is the time it takes for voltage to be sent from pedal to the ecu to the throttle body to the TPS to the ecu to the injectors, so on and so forth. ET's add extra time to the mix unlike cables that are as close to instant as you can get.

this same idea can be seen clear as day if you hook a volt meter or gauge to your battery and start the car. the meter will read 13.5-7 or so. now have someone rev the motor, and watch the meter or gauge go up to 14.2-7. the jump isn't instant, it climbs, not slowly, but slower than instantly. the increased rpms spin the electromagnets in side the alternator faster, but voltage still has to be transferred.

it seems like this sprint thingy speeds up the process by increasing voltage, making the lag less noticeable.

Originally Posted by IcedZ

You do know electricity travels at roughly C (the speed of light - 3 MILLION meters per SECOND)... and most processors these days process data in fractions of milliseconds.

Originally Posted by 6spd

yep you're right, but step motors, ecu's, sensors, and relays dont work that fast. the step motors in the throttle dont snap closed to fully open at the speed of light - 3 million meters per second, it is gradual, as is the depression of the gas pedal.

Originally Posted by WarmAndSCSI

The throttle plates on the VHR are fully open during normal operation - the VVEL actually throttles the engine by adjusting lift.