ECU Mac-05A Vs Mac-11B

[Ti Kan]

Christo Atanasov writes:
> Is it possible to change Mac-05A with Mac-11B with some modifications.
> Mac-05A was used with KG engine, which is K-Jetronic without O2 sensor, =
> instead KE-Jetronic with O2 on MC engines.

The MC's engine is still K-Jetronic, not KE-Jetronic.  The defining feature
of KE-Jet is the presence of a ECU-controlled differential pressure regulator
on the fuel distributor.  The MC's fuel distributor doesn't have one.
Instead, the system uses the all-mechanical control pressure regulator
(mounted on block) like all K-Jet cars, augmented by a frequency valve
for OXS feedback loop fuel control.

That said, the MAC-11B ECU are unlikely to be interchangeable with
the MAC-05A.  The two systems are just too different.  It would take
some serious mods to make it work right, and not worth the trouble.

-Ti
-- 
Ti Kan
http://www.amb.org/ti
Vorsprung durch Technik