| Author | Message | ||
     Kiwi |
This is a copy from Cycle World Feb 1997. SS2r installed on a 1997 S1. Jet kit 210 main 42 pilot, needle 3rd position ,fuel screw 3 turns out. No increase in max horsepower, 76 max Gained 11hp and 15 ftlbs of torque at 3800 60 to 80 times dropped from 3.9 too 2.9 sec Lost 7hp and 15 ftlbs below 3000 Lost .4 sec 40 too 60 mph No change in quarter mile time Are these numbers typical of most aftermarket slip ons | ||
| Djkaplan |
I think this is just more proof of how efficient the stock muffler is. The big, ugly, heavy unit designed by Buell engineers really works well, it's just too..., big, ugly and heavy. With the V&H SS2R on my M2 (and a rejet), I've noticed more mid-range and the bike sounds lovely (a little too loud, which is just right), but the bike vibrates more through the footpegs. I guess the weight of the stocker was actually a design feature. All that mass really kept the vibes down. Hard to believe, but my stock 2k M2 at 60mph was the smoothest motorcyle I had ever ridden - no perceptable vibration at all in the bars, seat, tank, and pegs. | ||
| Buells2t |
Here is my $0.02 To answer your question yes. To the best of memory (and it's been a few years) most of the slip-ons increased mid range, and didn't do much for top end. A lot of us Buell riders back then ran full Systems, like the Buell race system, or KT performance, I can't remember what year the force pipe became available, but it was in the late 90's as well. Due to the large volume and good design the stock exhaust works very well for peak numbers, but lacked mid range power. Most of the pipes available at the time increased the mid range. The Vance and Hines SS2R is known as a mid range pipe. I'm not sure who's jet kit they used but a 210 sounds pretty big to me, and too big a main jet on this bike would run ok, but be down on peak power. Peak numbers on a Dyno graph are for bragging rights on a bar stool. How much time do you spend at 6000 RPM? How much at 3800 RPM? Increasing Power in the mid range will help you pull faster through that RPM faster. Due to the cam/port profiles the lightning's (and most other Buell's) don't pull well below 3000 RPM, a lot of exhaust systems can hurt one area while improving another. I never run my Buell below 3500 RPM, as it has no power down there. I hope this helps, Mike (Message edited by buells2t on October 27, 2004) |
