Well recently I installed my DCAI and it took me about 4 to 5 hours. I was taking my time while i did it. I did not want to rush. I also had trouble disconnecting some rubber line as it was very stuck. If I was to do it again it would be considerably shorter time period. As this job is being done the throttle upgrade would be ideal to do the job as the parts are there when you remove the MAF and elbow. So these two Mods could be 5 hours together. I am going to be doing the throttle body upgrade soon as i get my delivery. As far as the oil catch can, I have not done this so I cant really say. Hopefully all goes well. Good luck with all and lets have an update if possible. Thanks

Also you should get some Pentisin brake fluid as there will be some loss doing the DCAI. I got some at my locally parts store.