KP astrology is all about using a Placidus cuspal chart for house division with KP Ayanamsa deducted from it, having the 9 planets mapped on the Placidus chart according to their sign, star and sub, using the occupancy and ownership of the stars and subs of the planets, adding the significations of planetary aspects, and finally using the Vimshottari Dasa system of time progression to time the event with the help of transits.
The major difference between KP and traditional astrology lies in METHOD of arriving at a prediction.
The basis of the KP technique lies in three fundamental tools: the Placidus Bhava Division, Ruling Planets and the Sub-division of the constellation.
KP uses the KP Ayanamsa as opposed to Lahiri Ayanamsha, which is mostly used in Parashari astrology. The difference between two is about 6 minutes of arc.