C63 AMG (W204) 2008 - 2015
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Theres a lag in shifting using the m Mode

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Old 09-16-2009, 01:04 PM
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'09 C63 AMG
Originally Posted by MikeS54
Its still the best true auto tranny i ve driven. It actually works very well when you put it in Comfort or Sport on the road. Where as stuff like the SMGIII's auto is simply unbearable on the street. New technologies like bmw's DCT or PDK are much better but I don't think any of these are as good when in full auto mode as the C63's tranny. (DCT at least isn't as good in auto not sure about PDK)

Now the 335's ZF tranny is a really good unit that probably shift slightly faster than the tranny in C63 but I don't think it rev match as well and sport mode isn't as good.

As of now theres always a tradeoff between comfort and shiftspeed.(again mabye not the PDK)
The BMW 335i's ZF21 6AT tranny shifts very fast in just 100ms, but you're right that it doesn't do the throttle blip rev-matching like the C63's tranny does; I never heard my 335i throttle blip anywhere near as pronounced as my C63's downshift throttle blip rev-matching.
Old 09-16-2009, 03:20 PM
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Originally Posted by sflgator
The BMW 335i's ZF21 6AT tranny shifts very fast in just 100ms, but you're right that it doesn't do the throttle blip rev-matching like the C63's tranny does; I never heard my 335i throttle blip anywhere near as pronounced as my C63's downshift throttle blip rev-matching.

The ZF unit is a really good unit though I love it. I think they use it on the Maserati gransport as well. If that tranny can blip like C63's tranny then it would be a better tranny for the car.

Not sure if it can handle the torque though
Old 09-16-2009, 08:58 PM
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2014 Lotus Evora S
Originally Posted by shaker
I did speak to Cory at Kleemann about the shift lag points.
He says that the Kleemann tune does absolutely nothing to change or alter this. What others have written about the transmission feel has nothing to do with the shift points having been changed. Perhaps it is just that extra power from the tune that eludes to that feeling.
Agree. During the adaptation period of the upgraded ECU, the gear shifting was harsh but the shift points have never changed (although I still feel that the 1st gear runs longer than before but perhaps I'm dreaming).
Old 09-16-2009, 09:05 PM
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I wonder how long until Kleeman decides to tune the TCU as well?
Old 09-16-2009, 09:44 PM
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The higher the load, the faster the shift. If you are cruising around at 2000 rpm, rather slow. At wide open throttle, much faster shift.
Old 09-16-2009, 10:56 PM
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'09 C63 AMG
Originally Posted by Z99
The higher the load, the faster the shift. If you are cruising around at 2000 rpm, rather slow. At wide open throttle, much faster shift.
+1. I mentioned this before.
Old 09-17-2009, 07:41 PM
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Originally Posted by yooker
I wonder how long until Kleeman decides to tune the TCU as well?

i doubt a tcu tune will change the actuall shift time but rather the shift point.
Old 09-17-2009, 11:14 PM
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Group R&D buy for the transmission?
Old 09-17-2009, 11:39 PM
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C63 AMG(sold), 2009 CL550, 2010 S550 Majestic Black, 2010 ML550, 2006 C230, 2009 Venza
Originally Posted by yooker
I wonder how long until Kleeman decides to tune the TCU as well?
I have yet to see REAL results of that "MHP TCU tuning". As far as i'm concerned and according to reputable companies such as Kleemann and ReNNTech, "TCU" tuning is nearly or impossible on this car.... Take note that the TCU TUNING thing comes from a company that advertises V3 TCU/ECU tuning yet some of their customers dyno 410WHP for a $5000 dollar tune. Only one person "that i've seen" has achieved what MHP advertises with their mighty tune and currently holds the fastest 1/4 mile time and that is Dad's C63. Yet, there is still 0 evidence of an actual change in shifting points or shifting lag with this so-called TCU tuning from MHP.
Old 09-18-2009, 12:06 AM
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How hard would it be to swap in a Corvette transmission into the car?
Old 09-18-2009, 03:21 AM
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Originally Posted by yooker
How hard would it be to swap in a Corvette transmission into the car?
You're a sick monkey but your head's in the right direction... Would the Mercedes 6M handle the power we're making? It might be less of a compatibility issue with bolt locations and electronics.

Josh
Old 09-18-2009, 03:52 AM
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Originally Posted by C63 Guy
You're a sick monkey but your head's in the right direction... Would the Mercedes 6M handle the power we're making? It might be less of a compatibility issue with bolt locations and electronics.

Josh
am not monkey

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