The Japanese RX8 car develops 188kw using one red and two yellow injectors.
So where is the problem?

Ian Beadle

Paul L. replied:

Lets see 188,000 watts divided by 746 watts per HP is 252 HP.
That obviously is the high power six port RX8 engine. The high power
(238 HP) six port RX8 engine in the US has FOUR yellow and two red injectors.
One for each intake runner. Six total. Only the low power (198 HP) automatic transmission four port RX8  engine in the US has two red and two blue injectors. Again, one for each runner. The red injectors are used on the center housing
primary and the four yellow are used on the end housing secondaries.

My suggestion is use just the four yellow injectors which is compatible
with Tracy's EFI/IGN computer. That computer has only four solid state
injector drivers.

       I'll have to double check, but I seem to recall that the red
injectors (in the center primaries) have greater flow than the yellow
injectors. (I could be mistaken, however.)

       I think that the four yellow injectors alone are inadequate to
supply the fuel needed to produce the full HP of the engine.

       According to Tracy, you can put more than one of these injectors
in parallel on each of the drivers. That is what he suggested that I do on
my six-port.

       Tracy posted this on Wed, 13 Jul 2005:

"OK, Here it is in straight forward terms.  I don't think it is needed
but if you want to run 6 injectors (in the belief that they are required
to flow sufficient fuel), use 2 yellows as the primaries and wire a
yellow & red in parallel for the secondaries."

       Bill Dube'


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