Posted on August 11, 2016 May 29, 2018 by FiTech EFI Can I run race gas? Most race gas contains lead which will permanently damage the oxygen sensor. Be sure to check with your race gas supplier to verify if lead is an additive. Post navigationPrevious post: Why are your systems so inexpensive?Next post: Do I need any additional boxes i.e. MSD or firewall mounted driver boxes like the other brands?