You should log other parameters like throttle position, WGDC and spark advance. Anyway, the only thing that seems abnormal in your log is the spike in fuel pressure from 1818.71 to > 2000 PSI at around 6157 RPM. The AFR goes to 29.29 while still in boost and that probably explains the momentary loss of power. I'm not sure what this could be, but it's strange to see the pressure spike and the momentary drastic change in AFR.
2007 mazdaspeed6 GT | titanium gray
COBB AP, intake, TIP | Corksport FMIC | GrimmSpeed 3-port EBCS | KMD HPFP | CP-E inj seals | ATP 3" cat'ed DP | Magnaflow 2.5" CBE | SM OCC w/ check valve | EGR + VTCS delete | TB coolant bypass | JBR IM and TB gaskets | ITV22s | GP-WERKS BSD + oil pan baffle | TT rear diff mount + bushings, front engine mount | AutoExe Lowdown springs | SPC camber adj ball joints | JBR SSP, weighted shift knob.