Siamese inlet ports

[_Brian]

Does anyone have experience with siamese inlet ports and efi?
Looking for some advice how to inject fuel since cylinders are known for one to run lean and other rich.

[stevieturbo]

If you go onto the turbo Minis forum, there are plenty there with knowledge. They basically use a modified Megasquirt system, where injection events are timed so as to reduce the impacts of charge robbing.

It does tend to require larger injectors, as the window for safe injection is smaller.

I believe Specialist Components in the UK are another company who have systems for the A-series which likely do similar things ( and possible Cane ems ? )

As to whether some of this can be avoided with a longer "wet" manifold where the injectors can be located much further up the inlet tract, more akin to a SPI setup...not sure.

Should also add, that they do also log AFR's on all exhaust ports to try and keep an eye on how the system is working which would be important