722.649 TCU torque management - How to get rid of completely (2008 SL65)

[anton28]

Hey guys, just as the post reads, how do I eliminate the terrible torque management on my 2008 SL65? The ECU and TCU are tuned by Eurocharged, but the car still feels sluggish on the line and through 40/50 mph. When I give it 30% throttle, it reacts much better than 100% throttle. I understand the transmission might not be able to handle all the TQ off the line, and I'm ok having it rebuilt to handle more if I blow it. I've even put the car in dyno mode, and it still feels sluggish off the line.

What are my options? Can this be tuned out of the TCU? Maybe a different transmission altogether?

 

[JC220]

Sounds more like you have a tune or engine problem than a transmission problem.

The 722.6 are durable transmissions and can handle 1000nm. My 2003 S600 has a light tune so is approx 580hp and 910nm. 148k miles on that car and servicing the 722.6 a few days ago the pan was clean no metal or damage at all despite being pounded by the V12.

Have you got access to MB star diagnostics? Would be important to monitor the live ignition feedback and other tests when driving under load.

 

[anton28]

Strange. No codes are being thrown. I had traction off and even put the car in dyno mode, and when I floor it off the line, you can feel the car holding back. I still feel the same resistance if I floor it even going thirty. Giving it less throttle makes it actually faster to accelerate.