Alexxx, nu stiu, o sa incerc. Oricum, am citit mai multe threaduri de pe alte forumuri si se pare ca Bavaria are dreptate. Unii au schimbat si valva, altii doar au resetat adaptatiile senzorilor. Are cineva idee unde as putea face asta in afara de AB? Service Measure Engine Electrical B12 209 05 04/06/2005 Subject M54B30 MS45.1; Engine Power Drops at 4000 RPM Vehicle E46, E60 with M54B30 and manual transmission. Complaint Customer may complain of an engine power drop at approximately 4000 rpm during aggressive acceleration. Cause Ignition timing retardation due to unfavorable tolerances of DISA valve flap shaft. Vibrations of a DISA valve are interpreted by the knock sensor system as detonation combustion. Measure On a customer complaint basis, replace DISA valve with the improved part (PN 11 61 7 544 805). After DISA replacement, connect vehicle to DIS/GT1 and from DME identification page retrieve the programmed and basic DME part numbers. Reprogram DME with the latest available DTS CD! SSS CIP software version. DME programming should last for at least 20 minutes and should result in both programmed and basic control unit number changes. Reprogramming of DME clears the long-term knock sensors adaptations. If the knock adaptation values are not cleared, the vehicle will still exhibit the power lack complaint, even with the improved DISA valve installed. Important: In the event the DME programming takes only a short period of time (approximately 5 minutes), and the basic control unit part number has not been changed, the adaptation clearing process has not been accomplished.