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Old 11-06-2014 | 06:35 PM
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Default rev matching

Anyone know if the rev matching feature in the sport chrono package on manual gearboxes is still included? I can't find any reference to it on the Porsche website. I'm about to order a new 911 and don't want to find out after the fact.
Thanks
Old 11-06-2014 | 06:42 PM
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Rev matching (and dynamic motor mounts) with the Sport Chrono package on the 7 MT. And a great & fun option, IMO.
Old 11-06-2014 | 09:16 PM
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Originally Posted by onedae
Anyone know if the rev matching feature in the sport chrono package on manual gearboxes is still included? I can't find any reference to it on the Porsche website. I'm about to order a new 911 and don't want to find out after the fact.
Thanks
My 2015 C2S 7MT has rev matching. Great feature at the expense of fuel consumption.
Old 11-06-2014 | 10:32 PM
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One of my favorite things on my 7MT C2S.
Old 11-06-2014 | 10:46 PM
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Thanks for the info. I have it on my 2013 and think its a great feature.
Old 11-06-2014 | 11:06 PM
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Originally Posted by Car25
My 2015 C2S 7MT has rev matching. Great feature at the expense of fuel consumption.
How does rev matching waste fuel?
Old 11-07-2014 | 01:19 AM
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Bringing engine revs up with throttle uses fuel. Bringing engine revs up with the clutch does not. So throttle blipping uses fuel. But not blipping to rev match increases clutch wear. And to a lesser extent I suppose tire and drive train wear. Exactly where the balance comes in is anyone's guess. But its not wasted.
Old 11-07-2014 | 06:15 AM
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Both would fall under negligible
Old 11-07-2014 | 10:31 PM
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If you're thinking about the fuel consumption of rev matching, well...............

Buy a Kia
Old 11-08-2014 | 02:38 AM
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Originally Posted by ny991
If you're thinking about the fuel consumption of rev matching, well............... Buy a Kia
Not only that, but who downshifts while letting the clutch/transmission absorb the entire load every time? LOL!

Any fuel saved from a lifetime of that would be more than wasted on a trip to the dealer to get a new clutch.
Old 11-08-2014 | 06:09 AM
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Just drive, fill up, repeat.
Old 11-08-2014 | 03:39 PM
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Originally Posted by StudGarden
Not only that, but who downshifts while letting the clutch/transmission absorb the entire load every time? LOL!

Any fuel saved from a lifetime of that would be more than wasted on a trip to the dealer to get a new clutch.
I doubt that anyone routinely allows the clutch to absorb the load on a downshift. In casual driving however when the car is cruising to a stop, a blip of the throttle is unnecessary since the time required to execute the shift is irrelevant.
The casual driver gently depresses the gas pedal as he executes the downshift. So there's no sudden increase in RPM, but just a gradual RPM increase to synchronize the car's speed to the selected gear. I suspect that most casual drivers shift this way on the street. On the track this technique is not applicable, since it takes so long to execute and tenths of a second are critical. On the track heel/toe and throttle blipping is essential.
Old 11-08-2014 | 05:09 PM
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Agreed. So now were only talking about the fuel difference between a partial to full manual blip to the SCP full automatic blip. I doubt the difference after a day of driving would fill a thimble.
Old 11-10-2014 | 08:17 AM
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i was playing around in Sport+ yesterday (7MT), and I don't notice rev matching either upshifting or downshifting???
Old 11-10-2014 | 08:25 AM
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Originally Posted by todd92
i was playing around in Sport+ yesterday (7MT), and I don't notice rev matching either upshifting or downshifting???
Do you have Sport Chrono?

It only rev matches when you grab a lower gear in sport plus. You can't miss the blip.

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