[Diy_efi] closed-loop at high load?

[Will Reeve]

Easy enough to check, wire up a high impendence DVM to the lambda sensor and
get a passenger to look at the voltage from it under your test conditions.
If under closed loop you will see the "oscillation" around stoic voltage. My
vehicle has Motronic M1.5 and it likes closed loop a lot, even at 130+mph,
unless under WOT its in closed loop!

Will

-----Original Message-----
From: diy_efi-admin at diy-efi.org [mailto:diy_efi-admin at diy-efi.org]On
Behalf Of Jonathan Norman
Sent: 30 December 2002 11:54
To: diy_efi at diy-efi.org
Subject: [Diy_efi] closed-loop at high load?


Does anybody know if an old motronic-system in a bmw 325i -87 is running
closed-loop at high load (not WOT) ? Cruising at 120mph for example.
If it is, will it adjust to AFR 14.7:1 even if I have an extra
injectionsystem working ? I am worried about the engine running too lean
with a turbo. When I have boost while not WOT, will the engine run
closed-loop and run lean ?

Happy new year !
/Jonathan Norman


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