tuning HELP
06-04-2009, 01:21 PM
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tuning HELP i have a 07 chev. avalanche with twin turbos.. tuning with EFI live can anyone help me out. when i get to full throttle it goes lean is this becuase i need a 2 bar map sensor.. because i am pegging the stock one out. it wont make more than 300 hp before pegging out the MAP sensor.
