AFR's mega rich after ic change and breather mod.

Struggling to get my head round this,
AFR'A were fine and recently got a new breadbin double ic.
Main jet:1.2
2nd:1.2
Ac: was at 1.1 so increased it to 1.2.
There was a slight change from 11@wot to 11.5@wot so upped to 1.3

When im driving it like a normal car and change up a little early, the afr keeps dropping and staying on 10
The turbo starts fluttering after 10-14psi
I have a standard 1.25 ac to try but whats the 10 AFR all about?
Ill upload a video when I get home

Sorted it..
Thanks

what was it stu?

Hi James,
"I think" it was my Pipercross Air filter!
the sponge on the inside had totally deteriorated, crumbling.
Found residue in the venturi.