About 99% (I'm not sure that is an exact number) of the air fuel mixture s controlled via the mechanical side of our fuel injection system. The Lambda system tweaks the flow to dial in a more optimal air fuel mixture. To do this it monitors the oxygen content in the exhaust gas. Is it emissions? Is it fuel economy? Yes. Is it performance? Yes. The light comes on when the Lambda counter, connected to the speedometer cable under your dash, trips over 60,000 miles since the last reset. That's the Readers Digest condensed version. Nick -----Original Message----- From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of daviddelorean Sent: Friday, October 31, 2008 5:22 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] LAMBDA system Is the LAMBDA system on the DMC the emissions? What exactly does it do? Also, does LAMBDA stand for anything? How can you tell if the LAMBDA light on your dash works? Mine has never come on. No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.175 / Virus Database: 270.8.3/1744 - Release Date: 10/31/2008 4:10 PM [Non-text portions of this message have been removed] ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/