Synchro Rev Matching and downshifting... confused.

Pushing_Tin · 08-02-2009, 09:03 PM

Quote:

Originally Posted by mcphelps

You cannot engine brake with SRM on.

It actually rev matchs on upshifts as well, if you wait for it. Really not much use though.

Of course you can. It just makes it smoother. Downshifting from 5 to 2 will induce much higher RPMs that will engine brake you when you let out the clutch.

mcphelps · 08-02-2009, 10:56 PM

Quote:

Originally Posted by Pushing_Tin

Of course you can. It just makes it smoother. Downshifting from 5 to 2 will induce much higher RPMs that will engine brake you when you let out the clutch.

But downshifting from 5 to 4 or from 4 to 3 without your foot on the accelerator will not result in engine braking, at least at nowhere near the same rate as with SRM dissabled. My experience has been that if I'm trying to slow down, downshifting is not the way to do it. It's like it keeps coasting, just at a higher RPM. I haven't tried 5 to 2, but just moderately downshifting as I'm coming to a stop, or slowing down in town for a corner has not resulted in the engine braking I'd be expecting, causing a bit of an adrenaline rush; kinda like stepping on the brake and there not being any.

shabarivas · 08-02-2009, 11:03 PM

Quote:

Originally Posted by mcphelps

But downshifting from 5 to 4 or from 4 to 3 without your foot on the accelerator will not result in engine braking, at least at nowhere near the same rate as with SRM dissabled. My experience has been that if I'm trying to slow down, downshifting is not the way to do it. It's like it keeps coasting, just at a higher RPM. I haven't tried 5 to 2, but just moderately downshifting as I'm coming to a stop, or slowing down in town for a corner has not resulted in the engine braking I'd be expecting, causing a bit of an adrenaline rush; kinda like stepping on the brake and there not being any.

Umm... all the SRM is doing is making you downshift better and quicker... so if you downshift to engine break - then you will do it sooner and smoother w/ SRM... please go drive your car...

armensti · 08-02-2009, 11:25 PM

Quote:

Originally Posted by mcphelps

But downshifting from 5 to 4 or from 4 to 3 without your foot on the accelerator will not result in engine braking, at least at nowhere near the same rate as with SRM dissabled. My experience has been that if I'm trying to slow down, downshifting is not the way to do it. It's like it keeps coasting, just at a higher RPM. I haven't tried 5 to 2, but just moderately downshifting as I'm coming to a stop, or slowing down in town for a corner has not resulted in the engine braking I'd be expecting, causing a bit of an adrenaline rush; kinda like stepping on the brake and there not being any.

the reason you think that your car is slowing down faster with the SRM off is because you dont rev match when you downshift and thats why it feels like its slowing down faster. but if you rev match like your supposed to when downshifting its going to slow down at the same speed as it would with the srm on

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