ek9beezler

I love this car, I LOVE it but I feel the weakest point is the transmission. Mine is clunky and slow. I think I would honestly never get rid of this car if it had a true DSC a la the PDK from our friends at Porsche. Has there ever been an exploration into what it would take to put something into a C63?

mr747

Contact Weistec they have a transmission tune for them

ek9beezler

I know they do. The question was whether or not anyone has looked into another transmission.

D3-AMG

With the amount of computer control/interaction on these cars I'd be impressed if anyone swapped a transmission from the stock unit.

BLKROKT

Just buy a car with a DSC/PDK then. The cost would be outrageous. Prohibitive. It's not even worth considering.

xxaarraa

OP, can you tell us what other cars you have owned so we know a bit more about your experiences and reference points?

Please don't take this as an attack on your credibility, but the MB tranny (especially the full auto in the pre-FL cars) is actually VERY smooth and responsive for an everyday sports car. You ever been in a bimmer with an SMG? Been in an S4 with the DCT? They are pretty poor to live with in everyday driving when you are not out there at the 10/10ths.

It's fashionable to ask for a dual clutch tranny these days, it's quite another to live with the clunkiness of them in everyday life. Unless you have a track only car, many of the DCTs (not all) are less optimal than MB autos.

JeffDL

there is an AWD M157 powered C63 black series floating around on here. with enough money anything is possible. buy an SLS DCT and pay someone to fit it and make it work. even better put it in the SLS location.

and i agree the old non MCT was the better trans in this car.

Kriston

How is the Weistec Transmission tune on the 7G? Is it worth it?

kb24forlife24

I'd like to know as well for a tranny tune on 7G

malaka1

What would you say is better about the old 7G tranny vs the MCT?

ENV²

I like the MCT trans. The old E60 M5 SMG was miles worse. I like the Brap sound on the WOT upshifts. In C mode its fine in day to day.

Phil Chow

The best transmission i've ever driven in, bar none, is the VW/Audi DSG/S-Tronic.

However, although the 7G Shifts a little on the slower end, it's VERY smooth. Sometimes my DSG would get a little clunky too, but, the 7G is a DREAM to drive daily-wise.

Curious to know more about the Weistec Tune also, and whether it's worth it and makes a noticeable difference. I already have the Eurocharged V5, so I get the downshift "blips", but, I'd love some upshift "farts" like the DSG/S-Tronic/MCT has also.

Exacc

I could use a bit more performance in the 7G. I compare it with BMW ZF automatic transmission which feel a lot faster.

I think its hard to compare Torque Converted Automatics with Clutch Based Trannies. PDK for me is really good once you get going, but in stop and go traffic, it feels like you a passenger in a Manual car. There is a bit of delay before the clutch bites.

I actually like the SMGs of BMW...many people don't like the clunk, but I think it adds character to the car.

Phil Chow

I used to have an F30 335i, and also have an F25 X3. The ZF Automatic is GREAT.

I personally thought the DSG was great in traffic, it's still the #1 Transmission in my books.

But for a non Twin Clutch, the ZF BMW Transmission is the best, bar none IMO.

If we could get similar shift times as the ZF in the 7G, that would be amazing.

Anybody have experience with the Weistec? How much faster are the shifts in general?

odonnks

I agree. Picked up a Ausi S3 for my wife's daily driver. Very impressed with the DSG.

Would really like to try a PDK or the new DCT in the AMG GT sometime.

Phil Chow

If it's the same as the A45/CLA45 DCT, then it's a little disappointing. The Benz DCT is more crude than the Audi/VW/Porsche DSG/S-Tronic/PDK.

It's clunky and doesn't shift as well, IMO.

roadtalontsi

the sls/gt dct is a transaxle very similar to the transaxle layout of a corvette. You'd have no choice but to remake an entire rear subframe and rear suspension from scratch. The sls one is night and day better than the 204 mct but not amazing. The gt one is the revised version of the sls one which i'd say is comparable to the other high end dct's. A more practical application would be the newer 205 mct transmission. Im not sure if it's just hardware, software or both together but it's alot quciker and more responsive than the 204mct. Maybe newer quicker ecu with the 4.0L as well. Bottom line is if you dont feel like dropping 50k$ into r&d forget about it and get a different car.

The wiestec upgrade will make things better no doubt. Shift times are quicker, but there's still lag between paddle pull and shift. Physics are physics. a regular automatic will never be like a dual clutch. This is also a heavy 4dr performance sedan for driving everyday, not really a track built intended monster.

deanmc

Here's my buddy Jason's car, it's the only C63 I know with transmission transplant. 6 speed sequential shifter:

https://instagram.com/p/5vOjJjIFOL/?taken-by=jamg63

CarHopper

^ Dean, would be pretty neat if we could get some more info on that. At first I thought this thread was as ridiculous as the air brakes one, but it seems as though someone actually has equipped a different tranny.

More details would be great. Not for me, but because tranny complaints here are frequent and I'd just like to have good suggestions for those looking.

ENV²

King of the DCT is Porsches new PDK but I rode in the new M4 and that M-DCT is incredibly fast. It shifts so fast car feels like its one gear without hiccups.


I hear great things about the ZF automatic 8 speed that is going in everything. I drove the new maserati GTS on a test track and while the transmission is nice it isnt something I would rave about. It seems to have felt much better in the RS7

BLKROKT

This thread is way more stupid than the air brakes one. What is the OP trying to do, build a full-on race car, because it's going to cost $100k just to fit a DSC in this car. It's a supremely stupid question to begin with.

The guy who put a sequential in has probably spent about that much also. He had to move the engine a few inches back and lower to fit it if I remember correctly. None of this stuff is cheap, or easy.

CarHopper

I didn't even reference the OP. I get that this is another one of those things where people just throw out they want to do this and that but dont understand the true cost and fade off into the dark when they realize that the build itself is worth more than the car. In some cases double...

However, there have been some here that have dropped that big dollar on the car. Furthermore, I'm curious about that tranny because it may also end up being a viable option for those who end up with some sort of S/C application looking for tranny options.

C'mon now, you know me. I know none of it is cheap or easy.

BLKROKT

I get that the thread has evolved from the original discussion, I totally wasn't railing on you dude. But I bet there are only 3 or 4 people in the world who this sequential could be applicable for. Could you imagine driving that thing on the street, where 99.9% of these cars get used? The time and money spent to get that working has got to be stupid crazy. In a C-class. Comeon now, I know we all want to be different, but where does the madness end? Sell the car and get an AMG GTS.

xxaarraa

I share your sentiment. I figured the OP was just day dreaming. I tried to ask/point it out politely in my first reply to this thread.

ek9beezler

Definitely day dreaming. This was more of a if I wont the lottery type question. Ideally I'd find a way to get a PDK in my car.