FiTech EFI Tuning Forum MenuForum NavigationForumMembersActivityLoginRegisterForum breadcrumbs - You are here:ForumPost History: ModfathaPlease Login or Register to create posts and topics.Post History: ModfathaModfathaUserProfilePost HistoryI just installed a 600 kit. The engine starts and runs but the AFR is stuck on 14.9 and the target i …In: O2 sensor stuck on 14.9 and Fitech in open loop6 years ago
