(07-12-2015, 01:46 AM)The ferret_imp Wrote: But there was no dyno machine there, no cooling fan. Isn't there usually a big machine sitting beside the bike that the rider watches?

(07-12-2015, 02:25 AM)xNE0x_imp Wrote: I am skeptical myself on the dyno video.

Motorcycles are setup with a factory tune, which is calibrated by what's already on a stock bike. Even in the old days, especially with the older honda's... If you modified anything, you found yourself messing with jetting, etc. You may and can get away with modifying your motorcycle without making any corrections, but it is not recommended unless you know what your doing. So, adding a slip on for 9hp gain on the CB1100 without running a modified tune of some sort, seems far fetched to me. You might gain a couple horsepower, but not that much.

(07-12-2015, 02:25 AM)xNE0x_imp Wrote: I am skeptical myself on the dyno video.

Motorcycles are setup with a factory tune, which is calibrated by what's already on a stock bike. Even in the old days, especially with the older honda's... If you modified anything, you found yourself messing with jetting, etc. You may and can get away with modifying your motorcycle without making any corrections, but it is not recommended unless you know what your doing. So, adding a slip on for 9hp gain on the CB1100 without running a modified tune of some sort, seems far fetched to me. You might gain a couple horsepower, but not that much.

(07-12-2015, 10:20 PM)DGShannon_imp Wrote:

(07-12-2015, 01:46 AM)The ferret_imp Wrote: But there was no dyno machine there, no cooling fan. Isn't there usually a big machine sitting beside the bike that the rider watches?

Pause the video at the 8 second mark and you see two gray electric motors driving cage fans, one on each side of the bike. Also, above the rider's left shoulder, you can see wiring, and what appears to be the bottom of the monitor. Later, you can see the rear tire on the dyno wheel.

(07-12-2015, 02:25 AM)xNE0x_imp Wrote: I am skeptical myself on the dyno video.

Motorcycles are setup with a factory tune, which is calibrated by what's already on a stock bike. Even in the old days, especially with the older honda's... If you modified anything, you found yourself messing with jetting, etc. You may and can get away with modifying your motorcycle without making any corrections, but it is not recommended unless you know what your doing. So, adding a slip on for 9hp gain on the CB1100 without running a modified tune of some sort, seems far fetched to me. You might gain a couple horsepower, but not that much.

The "old days" were before fuel injection. Within the limits of its map range, modern fuel injection can adjust itself. Dramatic changes will need a new map.

(07-12-2015, 02:25 AM)xNE0x_imp Wrote: I am skeptical myself on the dyno video.

Motorcycles are setup with a factory tune, which is calibrated by what's already on a stock bike. Even in the old days, especially with the older honda's... If you modified anything, you found yourself messing with jetting, etc. You may and can get away with modifying your motorcycle without making any corrections, but it is not recommended unless you know what your doing. So, adding a slip on for 9hp gain on the CB1100 without running a modified tune of some sort, seems far fetched to me. You might gain a couple horsepower, but not that much.

Nowhere in the video does it say that they didn't modify the tune. If there is even the slightest truth to the video, we all know that they would have to remap the bike. I would imaging that the failure to mention that was a creative marketing oversight!

(07-10-2015, 09:09 AM)kevbroce_imp Wrote:

(07-10-2015, 06:58 AM)DGShannon_imp Wrote:

(07-08-2015, 11:53 AM)xNE0x_imp Wrote: How is the performance of the 2 bro's exhaust? I've heard rumors it robs power.

Dyno Run: https://youtu.be/XV2N6bP33ck

Based upon the YouTube dyno run, it is one of the very few that actually adds meaningful power (9 HP & 5.5 Ft-Lbs). I just couldn't bring myself to disrupt the CBs vintage design with a modern exhaust can, much less carbon fiber. But, for those after that look, it is a winner.

Dyno Run: https://youtu.be/XV2N6bP33ck

Based upon the YouTube dyno run, it is one of the very few that actually adds meaningful power (9 HP & 5.5 Ft-Lbs). I just couldn't bring myself to disrupt the CBs vintage design with a modern exhaust can, much less carbon fiber. But, for those after that look, it is a winner.
There's no way just a slip on adds that much power. Yes, the manufacturer will quote that, but no person will ever see that on an honest dyno run.