If you like to redline I would suggest upgrading your transmission and torque converter. Good place to go is Speed force racing, they did my transmission and I am pushing 450+rwh from a 2004 G35 5AT.MTLbroker wrote:Has anyone got extensive experience with the auto trans in the 2006 roadster model?I am wondering about its durability - especialy if I rev to or near readline before manually shifting (I like to redline). Over time have you noticed any degradation of transmission?Thanks in advance.