Dyno plots with various slip-on cans on a 2017 SV

[Craig380]

Interesting video from the US, in which a tuner is trialling various slip-on can designs (250mm, 350mm length) and different internal tube diameters (up to 50mm) and comparing with the standard Suzuki exhaust. All on the same bike, done the same day, too. No other changes to the bike - standard airbox, filter etc.

https://www.youtube.com/watch?v=aXdR6GRhKw4

The cans do make a small difference, with some gaining at the top end but losing at the bottom.

[Talking Heads]

Is there a link to the graphs without having to suffer the video?

[Craig380]

No, but the basic summary is, the can with the biggest internal diameter perforated tube (2 inches / 50mm) made the best and smoothest power compared to the stock exhaust. All runs were full throttle so it's not truly representative of road riding.

The shortie 250mm can with 50mm ID tube was equal or very slightly above the stock exhaust in the low and midrange (but no more than 1bhp / 1.5ft-lb) and about 3 to 4bhp higher above 8K rpm.

The longer cans with slightly smaller ID tube inside lost a BHP or two at the low end, but gained about 2bhp at the top end.