BLACKONBLACKC63

Cant find any information about TCU location. Any one here remove TCU unit on our C63 car before? Try to search but have no luck. Want to sent TCU out to Eurocharged for TCU tune. Thank you.

mthis

If they know how to tune the TCU they should know where its located ask them.
If not go on weistec's website and look under products for m156.

RuckinAMG

I believe the tcu unit is inside the transmission. You have to remove the transmission oil pan to get to it.

benzmodz

I'm pretty certain they won't be expecting oil soaked box of parts.

BLACKONBLACKC63

Thank you for reply guys. Sound like i will past this TCU tune if it really require that much of work.

ecampbell

And what else have you done to your car that you are onto a mod no one else has done yet?

Merc63

All kinds of guys have tuned TCU's from Weistec.


Id check out Weistec for your TCU upgrade. You have to drop the tranny pan to get at it.

You're wasting your money unless you have headers and tune AT LEAST.

ecampbell

Dude, no one has cracked the tcu of these trans.

Merc63

722.9 Valve Body and TCU Upgrade

Weistec Engineering is proud to present the first and only valve body upgrade for 722.9 7 speed transmission used in many AMG and non-AMG models (See Compatibility List Below). When we receive your valve body, it is modified using our proprietary techniques to increase line pressure and improve shifting characteristics. Next we make changes to the TCU electronics to compliment the physical modifications.


Weird

ecampbell

You guys of course realize the transmission upgrade as well as most of the m156 modifications were developed on my (and jrcart) car.

Edit: merc63 I am referring to other modifications with require access to parts of b computer no one has gotten into yet but having said hat I wold like to know what the op has done to his car.

Merc63

Thanks for clearing that up for us mr campbell.

Hopefully OP doesn't want to change his shift points.

ecampbell

For the op who knows. You still have your Harley? I picked up a Blackline earlier this year.

Merc63

Yep, another money pit addiction!! fml, Im going to be eating kraft dinner here soon ha.

roadtalontsi

yes the tcu is actually in the contact plate attached to the top of the valve body inside the transmission.

Higgs Boson

you can typically adjust the trans settings through the ecu. I tune gm cars and trucks and just plug into the obdII port and access both maps, engine and transmission.

ecampbell

With all due respect his is not a GM truck and you will find the electronics on the merc just a little bit more involved.

roadtalontsi

Higgs Boson

The electronics, sure. Like the complicated inner workings of the say....door? Lol. Engine management is engine management my good man. If it is "more involved" it is unnecessarily so.

Please don't forget, I also own a C63 so I guess I also reserve the right to be snooty about my purchase with no real knowledge of, how do you say it, what I'm talking about...? However, I am not snooty about my Merc, it is a fine car, but a car nevertheless.

ecampbell

Never said you don't know what you are talking about.

I agree a car is a car and my point was and continues to be that you can not 'program' the TCU to do what you want (at the moment that is) in America. If it were that easy, I would have throttle blipping and I would have different shift points.

Higgs Boson

No disagreement here. Just saying what can't be done today doesnt mean it isn't possible tomorrow. I am sure the best scientists of the day are looking into the matter.

BMCINSD

Any feedback from those who have had their TCU/Valvebody modified by Weistec? Are the shifts that much quicker? I have Longtubes with tune and was trying to decide between this mod or a LSD.