I think... When I did my last tune during the summer my A/F was in the 11.6 range. Now I haven't had a winter tune since then since I am about to head back to Texas in 2 months. I noticed the past couple of nights that my A/F was in the 11.0-11.2 range at WOT in San Diegos 55* weather. How bad is this? Is it bad to go to the 1/8th mile tonight? Im running a Ported Blower with a 6lb Lower with a MAFia set to 7. 15lbs boost on 91 Octane.