Anyone use this on the berg? I had one on my Husqy 610, really helped with the lean running. I would hope with the better mapping it's not needed, but I figured I'd ask. Also interested to know if anyone installed the air box mod they sell on Ktm parts. com? I'm sure they would go hand in hand with a FMF 4.1 slip on, however it's a bit pricey.
I'm running this setup on my 2010 390 and it worked amazing. Could have also been installing the wing muffler and twin air powerflow kit at the same time but there was a NOTICEABLE improvement in power and smoothness in the throttle. Almost electric feeling is the only way to describe it. Still have to roll on the throttle to get it to light but I'm sure with a little playing around on the tuner can fix that
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