Turblow

My car has this one spot and only this spot that sucks and will not adjust.
The car is an 88 crx si, a6 motor fully built stock sleeves. Running turboedit, dsm 450's, 3 bar

At 1600-2500 rpm and -11 vacuum on the gauge the car just bucks. I can skip passed the point and the car runs fine, but if I try and cruise there the car pegs lean, 18:1 on the gauge but i cant hold it ehre cause the car bucks so I dunno what the actual y reading is

I really dunno why its asking for more fuel, ive added to as much as 5.96 in those columns and it does nothing

Anyones guess?

Heres my bin in pic format
http://www.putfile.com/pic.php?img=3733709



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Also attached it as a file
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