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Old 03-31-2013, 10:24 PM   #8
2012InfernoSS
 
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Drives: 93GMC sierra stepside/2012 SS
Join Date: Dec 2011
Location: San Antonio, Texas
Posts: 725
I installed the ecs kit last week and had it dyno tuned friday and damn! gain of 240 hp for me but I kept it safe and had long tube headers already
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