HP Tuners MPVI 4 Miscellaneous Each component is engineered to

Each component is engineered to go beyond OEM specs

based on what option you chose

camshaft base circle lobe diameter

This item and all electrical items are non-returnable

HP Tuners MPVI 4 Miscellaneous Each component is engineered toHPTuners MPVI 4 is a device software suite that allows you to read and write your ECM TCM. This interface connects to the cars computer(s) to a laptop that can read write the computer file. This will still require someone that knows how to adjust the tables correctly without damaging your engine and or transmission. We offer a performance tune for nearly every GM car that this will work with available on each specific platform page. How that works You