intro, O2 sensors

[Brian Neill Tiedemann]

Greetings from Australia,
Brian Tiedemann is my name, I have been subscribed a while, but with 
almost no traffic. Now that things are lining my mailbox, I will 
introduce myself: I am studying Computer Systems Engineering at RMIT in 
Melbourne. I have been playing with EFI for a couple of years, mainly on 
paper, and now to be on a Rover V8 derivative (5 litre). Luckily I have 
convinced RMIT to accept EFI as my 3rd/4th year project, and I will be 
hopefully designing a complete system. 
If anyone has experience with the Range Rover 3.5 litre EFI manifold I 
would love to hear from you, also general stuff regarding Bosch 
L-jetronics, particularly the Rover systems would be great.
Can anyone tell me what flow rate, or how many horsepower roughly a Bosch 
0-280-150-105 injector is good for? This is the standard injector used on 
the Range Rover, but I suspect them to be too small for a decent 5 litre.

Lastly, on the oxygen sensor thread, what about using a high impedance 
amp/buffer circuit (op amp or something) if you want to gang several 3914/5s.
Personally I can't see much point in this, as I understood that the 
change of voltage from a normal sensor is only meaningful over a fairly 
small range around stoich. This suggests that they may be more use as a 
too rich/too lean sensor rather than a measure of actual mixture ratios 
over a broader range. Also the panel meter approach requires care: must 
be V. high impedance, as sensors are not good as current sources, don't 
know whether damage is possible if too low.

cheers for now
Brian.