can someone tell me why there's trouble tuning the port injection set up? would a divider in the runner fix the problem?
The problem is the head, not the runner. In a siamese port head you have 2 cylinders sharing 1 intake port. And because of cam timing events that cannot be corrected, it is common for one to rob fuel from the other when heavy load levels are placed on the engine. Kinda' like musical chairs except the cylinder that can get the fuel first makes the other one lean and can melt pistons and burn valves, etc...
Thats why panic asked if your friend had any knowledge of the minis, because they also have the same design issue, and anyone having tinkered with them would know that, and advise against it.
