Ruger

In have a 2011 FE570S, and the factory exhaust can on my bike forced the exhaust gasses through two 180 degree bends. I successively tried an increasingly aggressive removal of material from the baffle, and no matter what I did the can still choked the engine. I was very methodical, and tried to preserve the spark arrestor characteristics. No joy. Eventually I concluded that in order to remove enough restriction from the exhaust can to make the engine run like the engineers intended, I'd have to either remove the baffle entirely or remove so much material from it that it would not retain its intended spark arrestor characteristics. So I bought an FMF 4.1 Factory slip-on, and it's run like a dream ever since.

sjetrider

Can ANYONE tell me a part# for the FMF 4.1 that will fit my 2011 FS 570? I ordered one that says it fits and it was no where close. ANY help appretiated, I love my Husa but parts are dificult to find.

Junkie

I've read that you can run any KTM 530 slip on on the 570 but haven't tried it myself

sjetrider

if anyone has bought one and has a box with a part# laying around that would be AMAZING. Its time to gut and repack mine so might as well attempt to find a slip on again
Also, who has tried an ECU or ECU piggy back on these, noticable or not worth the $$$$ ?
My reading has led me to a 50/50 mix but they have all been with different scenarios. The vortex seems the most flexible but holy $700 hole in the account batman.

funmachines

If you can get someone to flash the Euro map it makes a huge difference. It sounds like that is tough now though.

Junkie

my understanding is that flashing isn't possible anymore unless it was flashed prior to the change

I have a JD tuner on mine and it works great

sjetrider

this would definately be my choice