FiTech EFI Tuning Forum MenuForum NavigationForumMembersActivityLoginRegisterForum breadcrumbs - You are here:ForumPost History: jwags01Please Login or Register to create posts and topics.Post History: jwags01jwags01UserProfilePost HistoryWe have a Pontiac 421 on the dyno now. Engine was built to put out 550+ with a Fitech 600. We are ca …In: Horsepower Issues8 years ago
