Well this week I finished building up my Z!! I just couldnt wait to put in the 310 kit with that PWK!! I knew it was going to be fast but what i didnt know was that it was going to be faster than I thought. When I took it around the block I was like WOW I hit 1,2,3 gear I parked it and I did some tuning. I took it around the block again I hit 1,2,3,4,5 didnt get to 6 gear that power band is just to much power I really need to change my rear sprocket may a 40T or 38T. One thing a can say is That I can really feel the difference I had phase two with the 38 flatside it was nice but the difference is day and night. I wonder how much HP did I gain?? What does everyone else thing about the 310 kit?? What jetting and what gears is everyone running?? I really got to thank Cory for his work!!!! I will but it to the test this weekend. I will keep everyone posted. Thanks MAX