I just finished installing the FP 2.5 on my ZRX. The bike is a 2004 with about 15,000 miles. It was stock until this upgrade. I added a Jardine RT-1 bolt on can, part #18-3110-143-02. This is the race version of their bolt-on. It is a straight through design and sounds pretty aggrssive. Next went on the 2.5 kit and the FP 4 degree advance rotor. After the install, the bike runs great. It has been test run twice now for about 15 miles each time. Power is excellent, runs smooth, no flat spots found yet. The temperature was about 50 degrees so I hope it does not richen up when the temps warm up. It needs more test runs, but for now, I am very pleased with this kit. The difference is night and day versus stock. Suggested settings were:
Replace the #35 pilot screw with the included #38
Main Jets are 130's on the outside and 132's on the inside cylinders
Original needles were replaced with the the FP needles
Clips on needles set 3 down from top (middle slot)
2 washers added on top of the clip
Floats set to Kaw spec, at top of bowl
Rear air box removed and add K&N filter
Fuel screws set a 2 turns from bottom
These instructions seem to be right on for this set up. Runs great, sounds great. I think the bike looks better retaining the side covers vs pods. The front end came up when shifting into 3 rd gear as about 6,000 RPM. I even got a 15% discount for the nice people at FP. They answered all e-mails I sent them within a day.
This was simple to do and well worth the money. Unless I can find any bad spots anywhere in the RPM range, I'm letting these settings alone.