Anyone on this list running factory high butterfly injection?

[RPMClassic]

I am in the process of switching my 2.5 liter short stroke from Carbs to factory high butterfly injection. I already have twin plug heads, but will have to get the port machined for the injectors. Any other changes?? Does anyone have a complete list available? What pressure fuel pump is required? Thanks.

[CamB]

I'll just show my ignorance with the next question.

Isn't the high butterfly injection really big bore (like 50mm)??

The second question on the fuel pump - you should be able to use whatever Porsche did on, for example, the 2.7RS (I think it is 1500cc/minute one).

[Paul Thomas]

Jim,
Are you having the heads ported too match the stacks too? Those are some big Mo Fo's for a 2.5. We bored out a set of Mag intakes for my car and i don't think that they are quite as big as the high butterfly. If i remember right the throttle plates on those are 50mm. I would love to see some pics of the intakes if you have them. What size headers are you using? A friend of mine has a 2.5 with slide valves that he used to run in his 910 but the thing makes 300hp! and he couldn't keep those little vintage tires hooked up.

Paul
MFIWDP

[Wayne 962]

The 906s with 2.0L engines used to run high butterfies at times...

-Wayne