84 rotary rocket

so i bought a datalogit for my apexi ecu for my fc3s and i confused on how to tune it, does anybody have any background on the datalogit. currently the turbo hits around 3k rpm then stops around 5 ish then hits like a **** around 5,500 ta 7 as if it was a twin turbo? i'm pretty sure it has some settings from a fd. i jsut want my boost to hit from 3k to 7, i feel the power and potential but the tuning is just all wrong.