Glad that i could help out.

That the oilpressure drops that little at idle when hot is not an issue.
You have to have in mind that you didnīt qualify big ends or mains in any way,but none the less itīs of absolutely nil consequense from a practical standpoint.(OEM litterature states that youīre alright as long as you get 3 bars@3000rpms.Pressure can drop to 1 bar at idle)

When it comes to fuelrails et al.
We make those ourselves within the team.

(Customer car)
FR is cut from aluminium. Drilled and tapped for small stainless clips to hold the injectors in place.Laser engraved.Barb or AN ends.

FR is setup in such a manner that the FPR housing(We simply make a housing for the OEM Bosch part for "newer" cars) is bolted to the end of it for a fairly compact design-also makes any service easier.FPR vaccum is taken at the connection that can be found at No4 intake runner of some of these engines.If it isnīt there,just drill a 4.5mm hole and insert a very short piece of brake tubing.(4.76mm)

VR sensor setups.
Now,i donīt say this to ridecule or belittle anyone,but trust me when i claim that VR sensor setups are very very complex.Complex WAY beyond what the average end user of a SA can even dream up.
When the VEMS was first set into production some of the really hands on evaluation was done on my own 16V(developer is a close friend of mine).We tried numerous VR sensor setups(in the 20s) and evaluated over an exhaust gas analyzer(Got a Sun MGA1200 at the shop) and an oscilloscope.
Objective was to develop a setup that the AVERAGE user could more or less plug in and go.
This means...that we were anal about for instance HC values at the EGA(exhaust gas analyzer).(HC= hydrocarbons=unburnt raw fuel)
Thing is...
A VR is basicaly nothing but one serious magnetic pickup,and as such itīll pickup on anything thatīs ferrous and moves.This incl what we donīt want it to pickup for signal or noise as well.
Now..true the reciever at the ECU end is more or less "intelligent"(normaly floating threshold),but none the less..the "noise" is there.
To such a degree that if you move the VR sensor WIRING a foot somewhere along the line to the right or left youīll probably end up with a different noise pattern.A noise pattern that at one load or rev or another can very well produce a noise pattern the ECU has a hard time filtering out.
Granted,in some of the tries we got end results that would most likely never have bothered the average end user from a practical standpoint,but would most def have showed up at a sniffer test or similar.Like..we moved the trigger wiring a bit(For instance a couple of inches at the middle),and all of a sudden the HC values at 3000rpms increased from 60 to 300ppm.

As a result we ended up using a Honeywell GT101 hall effects sensor,and that is also what we recommend.Mainly because of ease of install and simplicity as well as availability.KISS,keep it simple stupid.

The trigger setup of a SA is the really hard part,and at least in my book it is NOT a matter of just setting the trigger up and go-if you use anything but the recommended Hall.
BTDT to say the least.

Agreed that a VR setup can be made to work.No arguments there.But,it is at least my belief that the average end user of a SA isnīt really all that interested in trying to redesign the wheel.What he wants he something simple to set up and go.A VR setup is anything but.

As for english documentation.
Jörgen Karlsson(one of the developers)is about as fluid in english as i am and can be contacted at;

jorgen@vems.se

Shoot him an e-mail.Tell him i sent you and take it from there.
That way you can at least make yourself an educated opinion.

Jesper