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Old 04-23-2012, 08:14 AM   #10
rkneeshaw
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Join Date: Oct 2008
Location: Northern Michigan
Posts: 677
My Ride: 330i ZHP
Getting quality numbers for a tune is indeed a problem. I personally have the ESS tune but have seen no dyno numbers that show a before and after. The few I think I saw of AA showed no gains. I'd love to see some solid proof of the shark, or back-to-back proof of any tune for that matter.
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2003 BMW 330i ZHP
BMW Performance Intake and SSK - Headers - Magnaflow - ESS Tuning
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