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Old 05-16-2013, 05:12 AM   #7312
Scooby Specialist
Member#: 73932
Join Date: Nov 2004
Chapter/Region: RMIC
Location: Denver
2005 STi BROtuned
2004 S2000


Although I agree with seasonal blends changing AFR's, but it might also be worth looking at your MAF Temp Compensation. They will also lean out as the weather gets warmer.
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yamahaSHO is offline   Reply With Quote