Attention Holley EFI TC-2 Users-
A firmware update is now available to allow your TC-2 to use our new 32 tooth trigger ring. This update is available online for older units, and is standard in all units purchased after 12-15-17. Units marked with “32T Ready” on the back are compatible, as well as any manufactured after Dec. 2017. (NOT AVAILABLE FOR TC-1)
Units manufactured before Dec. 2017 will have to be returned to Davis Technologies for a hardware update ($25). There is no charge for the update if purchasing a 32 tooth ring from Davis Technologies.