Finally found the time to flash my 35IS. I am verry happy with the ESS tune. It brings the power on very smoothly. The JB4 feels more torquey and brutal but I like the ESS and the idea they will be suppporting the E89 with more mods. I have to say the ESS support staff were very good. They were emailing me at 11PM on a sat night which was pretty cool.
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