Air/fuel sweet spot

[Slamnek]

Can anyone tell me what the sweet spot is for an 09 M8? the sled has an RKT head, D&D intake and a super q can. I am running around 13.5 at all rpm ranges and when adding fuel with the boondocker, the numbers don't change much but now i seem to be loading up in the mid range (4000-6000) if held at a constant throttle position. In the mountains i can run the BD box at all zero's and the A/F is 13.0 when wide open. Its kinda annoying because it works awesome up high but needs some fine tuning down low.

 

[HiLlClImB911]

Any egt's on the sled?

 

[Team Pigeon]

Try changing it to run 14 to 14.5 from idle to that mid spot...
how do your plugs look at 13:1 after a big long ass pull? How about the wash?