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Old 03-28-2013, 09:12 PM   #2
Drives: 2012 Camaro SS. L99
Join Date: Nov 2012
Location: Panama City FL
Posts: 114
Your top gauge is you Air fuel ratio AFR. Gauge that's probly. the one you see fluctuating and is normal.Just watch it while under boost to make sure u arent going lean The lower gauge is boost it reads vacuum and boost the -4 In the pic is vaccum. Anything over 0 is boost
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