[QUOTE=Ethan][QUOTE=schumi][QUOTE=Ethan]do you make any attempt to match revs on your downshifts? a little blip of the throttle to match that 1000rpm jump as you flick into the lower gear.[QUOTE=Ethan]

I don't think this makes any sense. On an automatic, blipping the throttle doesn't match revs because the engine and transmission aren't diengaged like in a manual with the clutch depressed.


My reply, Do a test, drive in fourth gear at 50mph, while maintaing that speed shift into third gear, what happens?

In my car the engine revs jump approximately 1000rpm.

QUOTE]

Of course the revs will increase because of the different gear ratios between the two gears. With a manual trans you blip the thottle on downshift so that when the clutch reengages, the engine is already turning at the speed it will be turning for given road speed in the lower gear so there is no jerk as the engine comes up to speed. I don't think the printiple applies in an automatic, which lack a clutch between the engine and trans (it does have clutches w/in the trans). But I haven't driven a porsche with steptronic (because I think automatics in porsches are a tool of Satan), and I know the last Panorama one article describes various shifting techniques for use with them.

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2005 Mercedes C230k sport sedan, 6 speed
1987 Porsche 924S - 968-engined track car