2010 Limited. After doing this mod only, how will I know if I will need to add a fuel management device?

 

I suppose the only way to REALLY know is to put it on a dyno and see what it looks like. Or you could just ride it for a while and see how it runs. If it's pinging in hot weather under load, you should probably add fuel. If it seems to be running ridiculously hot, which can be tricky to tell, add some fuel. Mine runs great right now but I haven't ridden it in 95 degree heat yet.

 

Removing the cat...what does it do to your warranty? Did a dealer do it?

 

Saved the original and will reinstall if I have any warranty issues. And no a dealer did not do it, I did.

 

You won't need a change in your fuel management with just the exhaust mods. If you change to a stage one air filter you will need to change your AF ratio.

 

The only way to "know" if you "need" a fuel management device, is by hooking your bike up to some type of exhaust gas analysis. There is no other way to know, period. Now you just have to define what "need" means.

 

IMO, changing the mufflers should not be a problem. But I've heard different things about de-catting & muffler change. I would think you would hear some pinging. Good Luck

 

My "need" means to avoid any damage to the engine.

 

Since MoCo runs it lean from stock and now the cat is gone with free flow mufflers it would make sense that AFR is more lean now.
I would recommened some type of fuel management.

 

In that case as long as you don't experience any pinging after the catectomy, you won't need any fuel management. I asked you to define need because it is subjective, ask 10 people you get 10 opinions. There's really only two ways to cause damage via tune condition; the most likely in your case is a lean condition that would contribute to predetonation, or an extreme rich condition that would allow accellerated erosion of the piston rings and cylinder walls, along with it would be accelerated wear to all lubricated surfaces due to gasoline contamination in the oil. These folks that say you don't need fuel management when you change only pipes or only air cleaner are making a guess. How many of them actually know and how many are simply regurgitating what they have heard here from other speculators. By their own definition they may even have been successful because their motor didn't fail, but they don't know the resulting tune condition. Ask someone who utilizes exhaust gas analysis, any change you make, even as slight as installing a clean air filter, will impact your AFRs. Without the real time feedback of exhaust gas analysis it is impossible for anyone to acurately predict the AFR effect of a given part, and anyone claiming to be able to is full of ****.