Quote:
Originally Posted by NoHaveMSG
Helps a lot on my car, basically can't shift down in the cold without it. It is also easier motion wise then trying to double clutch.
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Sounds like you're not talking about rev-matching but something else. Rev-matching is hitting the throttle pedal while the clutch is depressed. It only speeds up the flywheel and has no bearing on the transmission whatsoever.
Regular downshift:
- Depress the clutch pedal
- Move the gear lever to a lower gear. The synchros speed up the transmission's input shaft
- Release the clutch pedal. This will cause a jolt as the transmission speeds up the engine
Rev-matching downshift:
- Depress the clutch pedal
- Move the gear lever to a lower gear; at the same time blip the throttle pedal. The synchros speed up the transmission's input shaft
- Release the clutch pedal. As the engine is up to speed, there will be no jolt
(bonus - heel and toe downshifting is the same as rev-matching downshifting, just with the brake pedal applied throughout the entire process, with the throttle blip being done with the right foot while it's still pressing on the brake pedal)
Double declutching downshift:
- Depress the clutch pedal
- Move the gear lever to neutral
- Release the clutch pedal
- Blip the throttle pedal
- Depress the clutch pedal
- Move the gear lever to a lower gear. This should be effortless and the synchros barely needing to do any speed matching (if done correctly)
- Release the clutch pedal. There should be no jolt, as the engine should still be up to speed from the throttle blip