Here's a dyno chart from a recent 2010 CVO Street Glide that rolled through my shop.
Parts list
Exhaust: Fullsac B X Pipe. 2.25 CVO power cores.
AC: SE Heavy Breather
Cams: Andrews 54, installed with stock pushrods and lifters.
Cometic .030 head gaskets,
ECM accessed with TTS Mastertune.
Bike had a few thousand miles on it, so it was well broken in. Made better than average numbers before and after
the Stage II kit was installed. The 2.25 cores were a little loud for my personal preference, but they did pull a solid 2 HP gain
over the 2.0s. This would not have been the case with stock cams. Customer prefered the louder 2.25s and commented on how
much quieter they were compared to his last bike with TD Rineharts. No surprise there.
Stock off the showroom floor 85 HP-100 TQ
Fullsac Stage II kit 107 HP-114 TQ
Both before and after dyno runs were done in 5th gear with the same tank of gas within a 48 hour period.
I mention these details because they can make a substantial difference in the test results. Using dyno
numbers from different bikes tested on different dynos operated by different people to evaluate performance gains
can lead to very inaccurate conclusions. Hint: When checking out a dyno chart, always look at the shape of the TQ line.
Well tuned Harleys produce a nice smooth arching TQ line. Hence the term, "torque curve". TQ holes and TQ valleys are bad.
Take a look at the stock TQ line. Fell on its face at 3K, not so good. Big smooth TQ curves are what makes these tubby bikes fun to ride!
The shape of the TQ line tells us far more about "real world" performance than the peak numbers that everybody gets focused on.
Special thanks to "Goatheads MC" member Mike Buxton for riding with a Fullsac!
Steve George
Fullsac Performance
www.fullsac.com