She's acting up....

noodles · 08-06-2009, 04:21 PM

i have heard of this before and more then likely what causes it is the that the rev match is designed so that when you downshift your going to be right back on the gas so it anticipates this and does it for you.

Nikon FM · 08-06-2009, 05:14 PM

Same thing has happened to me (many times) while working through back road twisties. I'm just calling it a feature

davidyan · 02-25-2010, 11:12 PM

Quote:

Originally Posted by noodles

i have heard of this before and more then likely what causes it is the that the rev match is designed so that when you downshift your going to be right back on the gas so it anticipates this and does it for you.

This ^^ sounds like a pretty logical explanation... Also notice that if you are cruising then move into neutral, when the snychro rev match kicks in (immediately), that it holds the revs for a long time before realizing that you are not moving into another gear (due to coasting in neutral) and then slowly allows itself to wind down. Thus, if you were to downshift and not manully get back on the gas, the synchro rev match is still electronically holding the throttle open for about 3 seconds or so. Because of this, any engine braking would be minimal, if any during that time period. One way to test would be to disable the syncro-rev match and try it again- you would engine brake much harder then.

08-06-2009, 05:14 PM	#2 (permalink)
Nikon FM Track Member Join Date: Jan 2009 Location: Snoqualmie WA Posts: 973 Drives: 03 996TT Porsche Rep Power: 607	Same thing has happened to me (many times) while working through back road twisties. I'm just calling it a feature __________________ Buddy Revell: "One man's sooner is another man's later"

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08-06-2009, 04:21 PM	#1 (permalink)
noodles Base Member Join Date: May 2009 Location: SoCali Posts: 61 Drives: Mazda (for now) Rep Power: 16	i have heard of this before and more then likely what causes it is the that the rev match is designed so that when you downshift your going to be right back on the gas so it anticipates this and does it for you.