Bike: 1999 Legend
Carbs: Keihin CVK
I've been through a bunch of set-ups (long-time AMD
)... starting with the oldest:
August 2004
Mains: 120
Pilots: 40
Factory Pro needles 3rd clip
4x 1-1/2" holes in the airbox
Triumph 'Off-Road' Pipes
Max RWHP: 74.1*
View dyno chart
January 2007
Mains: 130
Pilots: 40
Factory Pro Needles 4th clip
Pod filters**
Custom 3-1 pipe
Max RWHP: 74.87
Max Torque: 51.96
First run with Pod filters replacing the modified airbox, and the new 3-1 custom pipe. Slight HP improvement, but look at the big lean spot at 4K
View dyno chart
June 2007
Mains: 130
Pilots: 40
Factory Pro Needles 5th clip (highest position)
Pod filters
T509 speed triple cams
Custom 3-1 pipe
Max RWHP: 86.98
Max Torque: 56.95
First try with the T509 cams. BIG top-end horsepower boost, but also a BIG lean spot at 4K RPM, leading to a BIG hole in the power band, and an actual HP decrease from previous between 5.5-6.5K RPM
View dyno chart
August 2007
Mains: 126
Pilots: 40
Factory Pro Needles 5th clip (highest position)
Pod filters
T509 speed triple cams
Custom 3-1 pipe
Max RWHP: 84.7
Max Torque: 55.63
This was where I had the bike professionally dyno-tuned. In addition to the jetting tweaks, the mechanic modifed the pipe to get better backpressure, which really helped the huge lean spot you can see at 4K RPM. He lengthened slightly one of the collector pipes, and added a small second baffle to another. Made a huge improvement in the way the bike runs. It still runs a bit lean at 4K, probably on account of the needles (see Jimmy's post above) but overall it feels great - no bogging, no stuttering, and major improvements in acceleration and top-end... feels much better on the highway now, almost like having a 6th gear
View dyno chart
HTH somebody...
*Note: all HP & Torque numbers are uncorrected... since I don't have the corrected #s for each run, figured I'd stick with an apples-to-apples comparison.
**Pod Filters... there are lots of opinions out there, I can only speak to my experience. I've never had any trouble with them in the rain, and I've ridden through some downpours (though I've never ridden them for more then 2-3 hours in the rain). I do have DIY carb brace (
pics) and i wouldn't trust just the carb rubbers to keep everything together, personally. Jetting with them wasn't any harder then jetting for a drilled-out airbox. Others have had more issues, maybe I just got lucky. The filters I'm using are K&Ns with Jack Lilley aluminum adapters to attach them.
