FiTech EFI Tuning Forum MenuForum NavigationForumMembersActivityLoginRegisterForum breadcrumbs - You are here:ForumPost History: blandrumPlease Login or Register to create posts and topics.Post History: blandrumblandrumUserProfilePost HistoryI am having the same issue with a 4L80E. Speedo getting signal, handheld displays zero mph. I’m sur …In: 4L60e not shifting out of 1st7 years ago
