I have the exact same problem on A90 with similar setup, but also, cylinder 1 shuts off due to its spark plug getting oil fouled. Can't find the answer yet.
Is there a direct port meth injection kit out there?
If not, has anyone improvised and made one?
Can you drill ports after the heat exchanger?
or is it easier/safer to use a billet spacer (like evolution of speed fuel injection spacer)?
Just installed Armaspeed intake. It took like 20 minutes. Another 10 minutes for the heat shield. And quite a while looking for the rubber grommet I dropped.
price wise, It costs $560 including international shipping. (went for alloy instead of carbon)
As for performance, haven’t had it tuned...