Car revving without applying gas?...

Vince

The whole idea of SRM is to help when downshifting going into a corner, when you are slowing down. It's intended so you don't use the engine to help slow you down. That's what the brakes are for.

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-Vince
2012 Nissan 370Z Pearl White/Persimmon Touring/Sport/Nav 6MT
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KingZee

Huh? Rev matching while downshifting isn't a new thing. The SRM just uses a computer to assist you in doing so. Down shifting before a turn is used specifically (in racing at least) to assist the brakes in slowing down and allow you to be in the correct gear coming out of the turn at maximum acceleration.

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Focus ST

ChrisSlicks

It has nothing to do with braking really. Yes there is a slight engine brake effect, but the reason that you blip the throttle is to synchronize the gears for a quicker smoother change (racing gearboxes often don't have synchro's). Engine braking happens but it is actually not desirable as it messes up your brake balance. I've taken to downshifting a lot later and at lower RPM than I used to for that reason.

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