I painted my car on a Sunday using a turbine setup and not as powerful as yours. I used the slowest reducer I could by as the paint comes out warm so it dries faster. I have been working on my renovating my house and just sold it. I have been neglecting my Chevelle. I need to wet sand it smooth but overall, for the little bit of $ I have in I am happy. The biggest advantage is the low amount of overspray. I am pretty sure I used a 1.4 tip and worked fine.