mate these electric blowers are designed for cars 1.6L and under.

Now with ur 3L V6 its gonna suck more air than the blower can supply so ur not gonna get much boost, if any. Boost is made when the blower is pushing more air in than the car can suck, therefore creating pressure in the inlet.

Did u hook up a boost guage 2 see if u were getting any boost?
with the size of ur engine, and the size/power of the electric blower ur probably choking the magna.

hook it up to a charade/swift/sirion/1200 etc and see how u go.

Im not sticking up 4 the product as i dont know much about it.. but i do know for a fact that they are for real small engines, not a V6!