[robinsson]

I want to modify my transmission for better capacity is it possible? What I need? 6mt automatic

[jordan313]

call shep-trans

[limitdown]

6 speed Manual Transmission Automatic?
If you have a "stick shift", then get a Spec clutch and dual mass flywheel.
If you have an automatic with a torque converter, then the only option is Propulsive Dynamic. Every other option has either proven to be expensive snake oil (Level 10), is just unproven or has left the market (Nizpro).

[BMW135xi]

Propulsive Dynamic only one left , for upgraded AT--N54.