After installed s/c and took car to the track seen on wide band gauge car was tanning to lean after 7000rpm, so I called ess and they told me my fuel pump is worn out and can't keep up with fuel volume. I deside to order aeromitive pump kit from hpf.
Ess recommend mne to go with aeromitive cuz it's gonna be it their vt-575 kit, so when I upgrade to it I save some $.
After I watched videos on hpf website install was easy. Works great (tested yesterday hehe). Ready for tommorow bmw race school