no the dinan is just not that good imo. I know im gonna have everyone cast stones upon me for saying this but i rode in my friends car with a Dinan stage 2 tune, fmic, and exhaust and my JB3 tune only 335 would walk him like a dog. See if u can get your money back. Go to N54tuning.com and order a jb3 from Mike. You wont regret it.
2008 BMW 335i/Sedan/Alpine White/Terra/Steptronic/Premium Package/Sports package/Comfort Access/USB/Sirius