Flat foot meaning1/23/2024 ![]() These advanced systems make for the minimum interruption of torque to the wheels. The most intricate of flat-shift systems on the other hand use very accurate torque sensoring, measuring the torque reduction when changing gear and linking that to a cut duration for the ignition. Although this is a less accurate method and therefore will produce more wear, that gap in torque conversion will be vastly reduced. Systems can also set a rev-limiter instead of the intricate ECU tuning so that the engine speed doesn’t spike too high, much like a launch control system. I for one think this takes a large amount of fun out of the driving experience who would rather a computer heel-and-toed for them? This surge of engine-trickery extends to flat-shifting, as the ECU can be programmed to cut ignition or fuel delivery while the engine and transmission are disengaged to prevent the spike in engine speed, simultaneously reducing that lag time produced by coming off and on the throttle. ![]() However, in the pursuit of ultimate performance to the very millisecond, manufacturers have started to program ECUs to a point where artificial driver aids like auto-blipping and rev-matching are successfully programmed into the car’s brain. When the clutch is reengaged, it must cope with the braking torque that occurs as it forces the engine speed back down to the required rate for that gear. ![]() By keeping your foot flat to the floor however, torque is added to the input shaft as it travels at the same speed as the engine. As you actuate the clutch, the clutch plate is left spinning at the same rate as the engine and transmission were in the last gear.
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