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Dyno proven 60hp, yet they don't show a dyno for a 328. Gfabry is right, you can only get 10-20hp on a non turbo engine with chip alone. Plus that cheap, no I would never do it. Save your money and get something good that you won't regret.
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2012 BMW X5 xDrive35i E70 Sport Activity
(Wife's Daily Driver) 2000 BMW 328ci E46 - less than 90k miles
(Gone) 2007 BMW 335i E90
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