Je weiter du runter gehst, desto weniger Druck (Benzin) hast du und höhere Wahrscheinlichkeit, das du Lean-Codes (zu mager läuft) bekommst.
Ich setz den Loop runter, hab somit höhere Wahrscheinlichkeit dass ich die Codes bekomme?
Nein, Pity meinte, das die Wahrscheinlichkeit höher ist das du Lean-Codes bekommst, das heiß die Blinker leuchten zweimal hintereinander und signalisieren dir quasi das du zu mager läufst.
Übrigens steh alles auf der wichtigsten Jb4 Seite direkt in der Beschreibung. 
ZitatAlles anzeigen
In some cars when E85 mixtures are used the auto learning may not
properly range open loop fueling, triggering false 29F2 fuel pressure
codes, and you will need to set it manually. To do this first disable
open loop learning by setting FutureUseA = 2. Then start with an open
loop setting of 75. If you experience 29F2 codes lower the setting by 5
until they subside. If your fuel trims are stuck over 50, you experience
run lean failsafe (2 SES flashes), or encounter frequent 2D25 tuner
codes, increase the setting by 5 until they subside. If your high fuel
pressure is consistently below 13 when open loop is 75% or higher you
likely have a physical fuel pump problem. If you are unable to find a
suitable setting to avoid both 29F2 and 2D25 codes you will need to
reduce the alcohol content of your fuel (e.g. if mixing in E85 mix in
less), lower the all map AFR settings by 50% to lean the air/fuel
targets, and/or use a fixed boost map like 1 or 2.
