850 TCU Version

[makanasap]

hi.

im noticed that tcu have a several version 15.3, 16.3 and etc. Did anyone know the difference according the version. some say the gear ratio are totally different.

thanks

[jamesy12345]

Are we talking about 4-speed auto boxes...

http://volvospeed.com/vs_forum/topic/149924-auto-trans-tcu-tuning-interest-for-development/

Final drive ratios are different depending on the engine, individual gear ratios are the same. FD has 3 options 2.56, 2.76 & 3.10:1