Choose Options HP Tuners GM E99 ECM Services for 2019 Corvette ZR1 LT5 HP Tuners E99 ECM services provide an upgraded ECM for tuning a 2019 Chevrolet Corvette ZR1 6.2L LT5. Choose to send in your original ECM or purchase a new upgraded ECM; tuning requires VCM Suite and... $1,999.99 - $2,499.99 Compare Choose Options