Posted on August 11, 2016 May 29, 2018 by FiTech EFI How many wires do I need to connect to start my car? Basic systems have 6 wires to connect. You can be up and running with 4 wires. Our most ADVANCED system has only 10 wires and that includes Nitrous and Dual fans , so it is a VERY stealth system! Post navigationPrevious post: How do I set up the system for BOOST?Next post: How much fuel pressure does the FiTech EFI run?