FiTech EFI Tuning Forum MenuForum NavigationForumMembersActivityLoginRegisterForum breadcrumbs - You are here:ForumPost History: Blue55chevyPlease Login or Register to create posts and topics.Post History: Blue55chevyBlue55chevyUserProfilePost Historyi had it tuned last summer and ran great. starting in the fall when weather got cold it started su …In: cold start surging4 years agoHi, i have a small block 355 with weiand 177 supercharger and power adder 600 set idle afr at …In: wont Idle power adder 6006 years ago