I was just wondering if the restriction provided by the stock intake air was enough to prevent you going lean?
My calcs indicate.....hmmm....maybe not - but real world is always better than calculator world.....

and BTW...If you measured AFR's at the same time - even better...

b22b

 

Looks like we have a winner folks
(who'd like to remain anonymous).
Dyno'd and AFR'd at 12.5 max on a 62/155mm with a latemodel PSK

But only 1- however it only takes one to lead the way......