TexasRebel
Gearshifter
- Joined
- Mar 19, 2016
- Threads
- 27
- Messages
- 2,500
- Reaction score
- 836
- Location
- between the mustard and the mayo
- Vehicle(s)
- 2016 YZ GTPP - PP2
Also, "lugging" is a term that doesn't really apply properly to drive-by-wire engines. Since the pedal is just a request for opening the throttle you can't really force the engine into dangerous territory. The computer compensates.
With mechanical throttles you could easily open the butterfly valve(s) and overfuel an engine in dangerous territory in the power curve.
When you go instant WOT in the S550 the computer ramps the throttle body open gradually while adding fuel until the TB matches the pedal request. Designed for the lowest common denominator (people who can't drive).
When you go instant WOT in the '65 you risk a stall. Between the sudden pressure differential change across the butterfly valve(s) and the Venturi relying on the Bernoulli Principle to get fuel into the engine you'll have a lean moment before going rich. If your engine speed isn't high enough and you don't have enough momentum in the vehicle, it's like trying to stand up underneath a waterfall. Mechanical throttles actually took driver skill to run best.
Throttle maps weren't a thing.
With mechanical throttles you could easily open the butterfly valve(s) and overfuel an engine in dangerous territory in the power curve.
When you go instant WOT in the S550 the computer ramps the throttle body open gradually while adding fuel until the TB matches the pedal request. Designed for the lowest common denominator (people who can't drive).
When you go instant WOT in the '65 you risk a stall. Between the sudden pressure differential change across the butterfly valve(s) and the Venturi relying on the Bernoulli Principle to get fuel into the engine you'll have a lean moment before going rich. If your engine speed isn't high enough and you don't have enough momentum in the vehicle, it's like trying to stand up underneath a waterfall. Mechanical throttles actually took driver skill to run best.
Throttle maps weren't a thing.
Sponsored