Question #1.

Are the injectors on the Diablo high impedance or low impedance? What are size of the injectors?

Question #2.

Why does the Diablo headers split into two headers on each side instead of just being one header on each side?

Question #3

How do you get access to the mufflers in the Diablo? It looks like you have to remove the deck where the wing sits on?

hi adam
the injector is a weber iw031. it is from many moto guzzi motorbikes. a quick google search will give you model numbers. i purchased 1 unit for $165 aussie dollars.
the resistence of the coils in the injector should be between 15 and 19 ohms at room temp through ecu's. weber list resistence at 16.2 ohms.
flow rate should be 270cc/min static flow at 3 bar.
i guess lambo designed the exhaust that way for performance considerations, or it may have been the cheapest way to manufacture the parts.......
take the rear deck and exhaust cover off, them you have unhindered access to the muffler.
matt