8l90

GM LT1 and LT4 Plug in Kit, with Auto Transmission and Manual Support

Based on the Syvecs S7Plus ECU, the Plug in kit for the LT1/4 integrates with all the functions on the LT series engine as well as communicate with the OEM Transmission ECU of the 8l90 in the GM Crate packages to provide enhanced drivability and shifting quality over OEM logics.