DIY_EFI Digest V3 #115

[Matt Beaubien]

Bruce,

> If some one can do the fuel but has trouble with the timing
> control  MSD has a "Timing Computer".  So you can use
> a fixed distributor, and have a rpm ramped advance, slope
> and total advance are adjustable, 20d cranking retard for
> starting.  Just use a divide by on the coil output for a signal
> for a batch fire.  To Synch it would take extra work for SEFI.

Accel has a much better unit than MSD. With the MSD unit, you can only
specify when the ramp starts and how fast it ramps. Accel makes a timing
computer that can be set in 500 RPM increments, comes with a MAP sensor
for adjustable vacuum advance/turbo retard, and has a NO2 retard function.

To be honest, I haven't used either, but it seems like it would be hard to
beat the Accel unit. I believe the part number is 49340 and is ~$225 from
Summit.


Matt Beaubien
mbeaubie at gpu.srv.ualberta.ca