Ivanized fuelling problem.

[Falcon 269]

... I might of went down a path of fixing something that isn't really broken.

Exactly.  Sound decision, Ian.   To be honest, I don't even think you're down on peak power - it's just that dyno run wasn't optimum, so you're not seeing it in black and white.

Just so as you know, if that air/fuel line really was showing the true state of the fuelling, I'd try one of two small corrections.  Either take the mixture screws out another 1/4 - 1/2 turn or raise the needles by 0.5mm.  I certainly wouldn't be increasing main jet size.

FWIW, I have the full Akra system on mine and have tried going a size larger on the main jets to see if it made any difference.  I felt no benefits performance-wise and saw fuel consumption increase as a downside.  I've also experimented with larger pilot jets and altering the needle position. 

Suffice to say I am back at Ivan's original settings. 

Mike