hey guys I am currently new here, I have a msds header on my 2010 mazda 3 2.5L I am getting cel for a lean condition is this normal when replacing the stock header with the msds one. Also does anyone have any idea if my afrs are messed up, between shifts im seeing 29 afr, idle im seeing around 14.1 and while wot ive seen around 13.1-14.1 afr.