Remapping necessary for slip on end can?

[mahseve33]

Found this quote from Stairliftman earlier in the year.

"Word of Warning to those that are running cans/systems without a remap, the fuelling is so lean lowdown as standard that if you fit an aftermarket can/system without a remap you are risking doing some serious damage to your pistons/valves due to detonation,especially if you are running on supermarket fuel/ high ethanol content
These bikes need to be run on super unleaded to get the best from them."

Having read several latter post, all mentioning that re-mapping isn't necessary with just a slip on can, I'm rather concerned.
Any update on this??

[Troppo]

BMW doesn't recommend a remap with the can only...

[Winger]

Nope niether does anyone else but if you do you will notice a difference just as you will with headers and filter.

[Troppo]

True - I had my Hayabusa ECU reflashed when I installed Yoshi cans...the difference was noticeable.