FiTech EFI Tuning Forum MenuForum NavigationForumMembersActivityLoginRegisterForum breadcrumbs - You are here:ForumPost History: DART512Please Login or Register to create posts and topics.Post History: DART512DART512UserProfilePost HistoryI recently got a new ECU (30003 400HP). I never had an issue with the truck starting and warming up …In: What controls idle speed vs temp5 years ago