The EFI Project(s)
 
   Current Progress on Crower Conversion

        These pages are an attempt to document what I have done with my Edelbrock/Weber PRO-FLO EFI that I installed on my 1934 Ford street rod.  They won't be very artistic because I'm not.  I much rather be twisting a wrench, building something electronic,  or coding so bear with me.

         A little history.  I've had this car for quite a few years.  Bought it back in September of 1970 so it seems that I have had it forever.  On and off through the years I worked on it but never really finished it.  Finally I got to a point where I could do it right so in October of 1990 I started seriously working on it again.  Well after five years of work I finally got it on the road again.  Originally I was running a 800 cfm Holly double pumper sitting on top of an Edelbrock RPM Performer and a Vertex magneto for ignition.  Well in October of 1996 one block from our house heading out on a 200 mile rod run up the coast it suddenly quit in the middle of an intersection.  The magneto secondary had opened up.  While checking into getting it repaired every shop I talked to said that these mags usually only lasted around 5000 miles on the street (it had 5120 miles on it at the time).  They where not originally designed for hi-compression motors and if they are in an environment that gets hot (half buried and shrouded by the firewall it would get so hot it you couldn't even think of touching it) they will fail.  Well that was all the excuse I needed.  I had been looking at the Edelbrock Pro-Flo system for a while and this was the perfect opportunity. There were several things that made this system attractive.  Good price for a complete system, ease of tuning with their supplied control module, and most importantly it would fit !  I did not cut the firewall in this car (except a small area to clear the distributor) so there was just barely enough room to get the engine in.   Most EFI system place the air valve towards the front of the motor over the water pump.  Well that would put the air cleaner through the radiator.  The Edelbrock Pro-Flo places the air horn on top of a more-or-less standard intake manifold.  I had room to go up as most of these old cars the motor sat low anyway. So through the winter months of '96-'97 I pulled off the old carb/intake, the GM double hump 1.94" fuely heads and installed a new set of Edelbrock 2.02 aluminum heads and the Pro-Flo EFI.  I ran the system in stock form through the '97 season. The beginning of 1998 I started playing with it.  Always got to play with things to see how they tic.  So I guess the best place to start is getting into the car.....

      Now that I got it installed it was time to get it out on the road.  The first year was spent tuning and checking out how well it ran.  Right off the bat I was please with the improvement in fuel mileage.  The best I could achieve was in the 10-11 mpg range (that was cruising on the freeway keeping my foot out of it).  The cruise mileage immediately jumped into the 16-17 mpg range.  Really gave the old beast longer legs.  But everything was not perfect.  The unit had a real hard time dealing with elevated induction air temperatures.  Also I noticed a slight, and intermittent, stumble off of idle.  So I started down the path of figuring out how all this worked with the goal of better understanding and possibly modifying things a little....

    Plan of Attack:

  1.  Draw a schematic of the controller to understand the hardware.
  2.  Dis-assemble and document the controller's firmware.
  3.  Draw a schematic of the ECU.
  4.  Dis-assemble and document the ECU's firmware.
  5.  Start having fun by changing things...


So here it goes.....

    Well, I think most of the above has laid out a fair ground work for what is to follow, the fun stuff !  The following is some of the problems I found and their solutions (if yet any).


This stuff is work in progress......

    Being these pages are a continuous work in progress it occurs to me that I need some way to keep track of changes made and to signal when something is updated.  I will sometimes scatter some  and  images next to items that are New (or a page that contains new information) or Updated and date them.  I will also try to keep a log of what and where information has been updated or added below.
Any comments, inputs, and suggestions are more than welcome.  I would really like to hear from any owners of an Edelbrock Pro-Flo Fuel Injection system also.  The more information we can gather the better for all of us.