if your mixture is off, it will get the headers hotter than designed and will void the warranty. You dont have a lot of opportunity to reset timing or major fuel ratios while its hot running at 2200 rpm. Beat on some manifolds for the break in. A lot quieter too to listen for knocks and ticks too. VHT black or Walmart BBQ paint! I had great results with VHT Ceramic in white. Pulled some pro-parts headers after a year and had to physically chip some of the fused paint off and it was as shiny as a new dime underneath. Spraying them down with WD40 for winter hibernation? That would make an interesting spring start up IN the garage....
