Hi. I have a 2011 328i Sedan, manual transmission, base model. No tunes to date. I am the original owner with 80,000 + miles. 18" M270 wheels added for cosmetics and perhaps a smidge of weight reduction. I have read what Burger and Turner have to say regarding their ECM options. Turner goes beyond Burger in that they can also tune for an anticipated cold air intake and performance exhaust. Turner is more expensive and ECM must be shipped. Burger is less expensive and requires installer to do some light rewiring. I anticipate that the map selection on the Burger product might be annoying, but it would appear you can select a map, say Map 3, and leave it, so not too big a factor (?). Can someone with experience with either Burger or Turner or both comment on the tune choice/experience? Thanks!