I have recently talked to the service advisor at the dealership where I purchased my car and a service tech at the local Cadillac dealership. They both claim that the V-6 in the LTZ is the same as the CTS. The difference is the CTS has 304hp while the LTZ only has 252hp which according to them is simply a difference in the programming of the on-board computer and a different air intake. This can be changed by installing a K&N cold air intake and a performance chip. Has anyone seen a company carry any perfomance parts for the new Malibu yet?