B&M 70380 ShiftPlus Electronic Shift Improver

The B&M ShiftPlus Electronic Shift Improver electronically recalibrates your automatic transmission for optimum performance and extended life, all without removing the transmission pan or valve body. It installs simply in minutes with hand tools, and then you can flip the switch to choose stock or performance mode. In performance mode the shift firmness is improved, reducing slippage and heat, and making driving more fun and pleasurable. The B&M ShiftPlus is emissions legal in all 50 states.