At the moment it's hard to gauge the economy. I was busy playing around with the tuning of the ECU when I did something stupid. I was concerned with the noisy tach signal I was getting from my Crane XR700 so I decided to convert over to spark control mode run by the MS controller.

Don't do it! The Crane opto receptor can not handle the straight +5V voltage put out by the ECU. It goes, "poof" and doesn't work any longer.

I've got a "Hot Spark" ignition unit, essentially a Pertronix system, ordered and hope to have it installed and back to running this weekend.

My initial impression is the mileage is considerably better than what I was getting with my Holley conversion carb. It might just be me being optimistic and I really haven't given it a good long test but I drove the snot out of it for a week and used only a quarter of a tank.

The set back gave me time to mount the fuel pump at the rear of the car where it belongs so something good came of it.