Would EFI be worse on the ATV's because of the water and that no EFI would be great with moisture, water...I do know that EFI is good for riding in the mountains

 

Unless you've been having problems in the wet areas with cdi's, coils, and other electrical components on carbbed machines I wouldn't have any extra worry about EFI equipped machines.

 

EFI has an advantage for changing altitudes. Probably more efficient and a host of other things but I still like a carb - for the simple reason, I can work on it and fix it myself if need be without dishing out bucks for a shop tech.
If you have to change altitudes often the Dial-A-Jet makes dealing with carbs a whole lot simpler - to me it is worth it. If you need to change jets then it takes about a minute to turn the dial for a different jet setting. (5 settings)
Check it out at: http://www.thunderproducts.com/dial_a_jet.htm

 

But what happens in the situation where you get water in the airbox then down to the EFI? When it's a carb it's a matter of draining the bowl most times. Many of us probably ride mud holes and water holes alot. Just curious.
Buck

 

I can add this. Last weekend I rode from 3000 to 7500 feet on my 700 EFI Grizzly and it ran strong the whole time. My buddies on a Bayou and Vinson struggled at the higher elevations. Their machines were sputtering and missing in the thin air. Snowmobiles have built in altitude compensators on carbureted sleds. Why can't ATV manufacturers do this? I'll take EFI any time.

 

been riding in the mountains since i bought my grizz 700 and its had no problems.....[






Q]yamaha 4 life</end quote></div>

 

id take efi anyday on anything over a carb. even on lawnmowers and stuff.

 

I think carbs would seem better...less to break...and if there is less to break, more work can get done!!!...I live in flat land...no mountains...I might not trust a computer controlling my fuel

 

<div class="FTQUOTE"><begin quote>Originally posted by: power123456789

I think carbs would seem better...less to break...and if there is less to break, more work can get done!!!...I live in flat land...no mountains...I might not trust a computer controlling my fuel</end quote></div>

Computer? Are they computerized A/F mixtures or a throttlebody type injection? Injectors are bolt on part, you do not necessarily need a tech. But they do cost $, while a carb can be cleaned and repaired.
When they work, injectors are less complicated than carbs.

 

<div class="FTQUOTE"><begin quote>Originally posted by: power123456789

I think carbs would seem better...less to break...and if there is less to break, more work can get done!!!...I live in flat land...no mountains...I might not trust a computer controlling my fuel</end quote></div>

Just fear of change, and understandable. I was a touch hesitant when the idea originated with the cannondales but it's been in use now by major manufacturers for years on these atvs, even Polaris couldn't screw it up.