My setup had been returning sluggish part throttle performance....felt like rich running. Checked via block 32 & 33 (o2 voltage) to see ~ 9/1 or 10/1....but hits 12.5/1 at WOT. System has adapted (took quite some time and hits -20.3% trim) but now I realize that my setup really requires more involvement on my part. I won't do the recalibrating....I'll leave that to KMD Tuning (& Dahlback) but I need to be able to properly inform them on the readings.