Originally Posted by Roman@ESS
The ECU will go thru some adaptation for the first 500 miles or so. The more you drive it the closer it will get to being 100%.
Thanks Roman! I thought I was going crazy just the past 5 days. Put over 200 miles on her and its getting better by the day
2010 E90 M3 MODS: ESS VT-1 550-BMW CF splitters, Rear spoiler, afe intake, ESS tune, Fully catless, Borla Axle back, fabspeed xpipe, RD springs, BMW V2 performance steering wheel, TO many to list