2006 update:
This thread was started back in 2003 and is fairly long. For those that don't have a few hours to read it here is an executive summary.
I had converted my Porsche 911 to EFI back in 2002. Lot's of folks were also interested in such a conversion. In 2003 I was without a job for a while so decided to make a kit that was more production oriented and simply a bolt on for others. I had parts CNC fabricated and documented the installation with a very detailed installation guide with lot's of color photos.
This thread goes through the adventure.
A dedicated Yahoo Group has been created for folks to discuss the details of there CIS to EFI installation. You can join the group here:
http://autos.groups.yahoo.com/group/bitzracing/
Back to the start of the thread....
With the recent slump in the high tech market, I find myself without a job and looking to do something different.
Some of you may know that I have converted my 1978 911SC from the stock CIS fuel system to an electronic fuel injection system. (look at the link below) and do a search in the archives for details.
I am wondering if there is any interest in producing a kit for people the looking to go down this route?
The kit would include everything you need to dump the CIS and to go to EFI.
The kit would include:
-Custom made fuel rails for the 911
-all fuel lines and connectos
-special plugs to fit EFI injectors in the stock Porsche runners
-wire harness
-adaptor for TPS sensor for stock porsche CIS throttle body
-engine temp sensor
-intake air temp sensor
-manifold pressure sensor
-braket to install ECU under passenger seat
-fuel map table for the 911 engine
-instruction manual
-two options for the air box. For those looking for weight reduction the current airbox can be cut down to reduce weight. The other option is leave the airbox almost as is using existing air filter. All fuel lines disconnected and metering plate removed.
-and here is the deal on the ECU
The ECU would be Megasquirt which is a proven design in hundreds of vehicles. You would have two options for the ECU since I did not design it and would be unethical for me to profit from selling the ECU.
1) What you would have to do is buy all the parts yourself and assemble and solder everything and test the megasquirt ECU (About $150US in parts). This was the orginal intent of the designers.
Or
2) I buy the PCB fom the designers and parts and charge a fee for assembly and the cost of parts. (Note: Posts by the original designers on the Megasuirt yahoo group have OK this arrangement in the past). I would make sure they had no problem with this arrangement before making this as an option.
Software for tuning is available on the net for free. Directions on where to find it and installation would be provided.
Note this is a "speed density" system (not mass airflow) which lends itself perfect for turbo/supercharging the engine.
Let me know the following:
1) Would you be interested in such a kit?
2) I'd also like to know if you would never buy such a kit unless the fully assembled ECU was included
3) how much you'd be willing to pay for such a kit?
Cheers,
Tony