Cobb stage 2 at Hpde

Discussion in 'Fiesta ST Road Racing' started by Mr UFO, Mar 19, 2015.

  1. Mr UFO

    Mr UFO Active Member

    Has anyone else been running this map for track days?
    I have a Mountune full intake and intercooler, cobb stage 2 91 map, running 92 octane with 16 ounces of the Torco octane boost for some safety margin.
    The car ran fantastic and the power was great!
    But, as the day got warmer my AFR's seemed to be getting lower and lower.
    Around town at wot I see 11.7.
    Today at the track it went down to 10.5, then during the last session 9.7.
    Doesn't that seem a little low?
    BTW, the Mountune intercooler was awesome-it kept the charge temps very close to ambient!
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