I don't think we can really say what the gain was, even if the HP figure is derived from a 320WHP dyno run. People on here have posted their dyno figures and they ranged from 276WHP to 305WHP so you'd have to know what Dinan's stock car put down before you can say how much it gained.
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2014 BMW M235i 6MT
2012 Mercedes E350 Bluetec
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