c63amg507

i think the weak point of my car is the transmission ....2014 507 sedan ...i searched a bit and found that weistec has a valve body upgarade reprogram/modification available . my questions are.....has anybody done that and is it woth it , and reliability issues with transmission after said modifications....

abcut973

lol! The MCT is a know weak point for the C63. Between not being a real DCT and cooling issue that is a fact.
Now for normal street driving it is doing its job as it is supposed to. Are you tracking your car or planning on heavily modding?
Usually people upgrading their transmission via weistec do it because they have considerably change to power output of the car like a supercharger. And IMO that is the main purpose of upgrading the TCU/valve body. Because you have much more load to it due to the power increase.
If you have only a tune and headers you don't need this upgrade. Use instead that money into upgrading your cooling system.

c63amg507

airbox and pipe only for me , i believe i have enough at over 500 for this car .Lucky i still have a permit.... actually i was not thinking converter , just valve body an programming ,because i would like a bit firmer shifts . 2500 rpm converter i think in traffic is a bit too much . i do not have excessive heat problems seems ok ....just keep Windows up....

yzhou

Yep, the MCT is the weak point. But because it's a automatic not a dual-clutch transmission you could leave it on S+ when you cruising on the highway. And when u push down the throttle it will goes to 3 gear directly from 7 gear. U couldn't do that to a dual-clutch bmw m5.

jcfay

Heat problems is referring to oil temps and oil cooler, which doesn't do a great job when under even moderate and high driving loads. So that's the upgrade that some would like, FYI.

alexmtl

Yeah, you can .

Actually I'm fine with the MCT, except the manual mode which I use most of the time. I wish I could go down/up several gears at once like I used to do with my DCT, and a couple other stuff.. But the shifts themselves are plenty fast for me, and it works well in D mode.

yzhou

I think dual-clutch only allows to drop 3gears once . That's why every time you change to M model it's automatically down shift 1gear.

c63amg507

jcfay....it was a joke ,,,,,close the window turn on the ac .... i know it gets warm in there but i have not had overheat issues . now i want to know why you dont have nostrils on the Hood of your car....2014 507 trademark..