Quote Originally Posted by yfin View Post
Nah that isn't correct. The CL9 definately had a long 4.4 final drive. Only the Acura TSX had 4.76.

If your data of 4.76 on the CU2 is correct -that explains how it partly overcomes the weight increase as the acceleration is similar to the CL9. Is your data for both vehicles from the Acura TSX?
Maybe they only changed the final drive ratio on the CU2 and left the gears the same??