FiTech EFI Tuning Forum MenuForum NavigationForumMembersActivityLoginRegisterForum breadcrumbs - You are here:ForumPost History: jimmywaldoPlease Login or Register to create posts and topics.Post History: jimmywaldojimmywaldoUserProfilePost HistoryWent back to drawing board. Still working on it. Waiting on parts to arrive. found an exhaust lea …In: below 2000 rpm I get stumble and back fire thru throttle body7 years agoUnder load and below 2000 rpm I get stumble and back fire thru throttle body. New to this. I thought …In: below 2000 rpm I get stumble and back fire thru throttle body7 years ago
