FiTech EFI Tuning Forum MenuForum NavigationForumMembersActivityLoginRegisterForum breadcrumbs - You are here:ForumPost History: PAL169Please Login or Register to create posts and topics.Post History: PAL169PAL169UserProfilePost HistoryI have a stock 289. My IAC steps average between 5-7 at operating temp (over 170 degrees). The i …In: Stumbles at 45-55 mph when giving it a little bit of throttle7 years ago