yes i have an WB afr guage hooked up. no changes were made besides changing to a new icm when hesitation began. could the icm fail in a way where it works most of the time but sometimes changes my low rpm spark. just turned spark advance back on and spark doesnt look like when it used to.

and the question was could this weather change mess up my AE??
my AE was fantastic as i stated above i was Finished with chip, everything was great, AE on the AFR was gut. but now in the warmer weather(or the icm change) is causing problems.
also vacuum is very good. like 22inhg

and again this is a question on AE tuning versus weather. so does anyone know if weather changes and or pressure changes could mess up my AE tuning?
if its the icm it will be tested today and changed.