I understand. Yes probably will not make any difference, but I would
like to
run my FI system closed loop. I should be able to pick up maybe a mile
or two,
extend the life of the cat, and get slightly better response to changing
conditions (such as altitude,  etc.).

Of course the way I drive will have a bigger impact on my mileage than
the FI
system. But currently this is my toy and I think it would be neat to
convert
to the CA system. Plus I am tired of fiddling with points.

I am sure it would be cheaper to run a Pertronix (or equivalent
ignition) but
the OEM system has proved itself over the long term or else not as many
of the
our CA brethren would still be on the road. After I see how the existing
L-jetronic system performs closed loop then I may try the Megasquirt or
EFI332
FI systems. But from the BMW FI pages the community seems to believe
that a
closed loop system is worth the trouble in regards to performance,
system
operation and mileage.

If I carry this experiment off then I will let the community know what I
have
discovered. I will run test between stock federal open loop L-jetronic
and the
modified system.

--Jeff
82 Westy

Sean Garrett wrote:

> Not trying to flame you here, but...
> As another post put it, your mileage will not differ.
> Also as you put it, driving a brick through the air.
> A different ignition system is not going to make a significant difference.
> Save your money for a water-cooled conversion if you want to make a
> difference.