I've noticed that many people want EFI on their ATV. Why? The carbs on my bikes have always worked very well. EFI would add much complexity that would only increase cost and the possibility of problems that are not fixable in the field. This might be fine for a street vehicle, but when I'm miles from civilization, I want simplicity, unless there is a large benefit to a more complex system. It seems that the real reason for EFI is to meet ever tightening emissions regulations, not because of a performance gain that offsets the complexity and cost drawbacks.

 

More tunable horse power.
Easy starting in any weather condition.
Smoother, cleaner idle.
Better MPG.
Better throttle response through out the power band.
Tuning can get the best of both worlds, optimizing both the low and top end power.
No needles or float bowls.
Less weight with just a throttle body and 1 or 2 injectors.
Fuel injection has proven it self to be far more reliable than a carburetor many times over. Not only in auto's but in the out board marine engine industry's as well. Many off shore fisherman rely on these injected engines. The same arguments were heard here when liquid cooling came to ATVs'. "Why rely on a water pump? The sky is falling, the sky is falling!"
Injection is not a Kawasaki invention. It is a time proven improvement.
Don't be a curmudgeon! Embrace and enjoy the advancement in technology.

 

This might be redundant with what therock said, but here's a couple reasons

No need to change jetting with altitude. Climb from sea level to 7,000 feet without much of an impact.

Less fussing with bolt on upgrades... change out to a k&n without having to rejet, change the exhaust without having to rejet. Drill a hole in your airbox without having to rejet. Add a snorkel without having to rejet.

Spark plugs last longer and give better spark when they're not fouled because of a bad mix.

 

I am going to EFI my Jeep, this year, for ALL of those reasons!

 

curmudgeon- An ill-tempered person full of resentment and stubborn notions.


I like the idea of EFI on quads. The glass is half full.[img]i/expressions/face-icon-small-smile.gif[/img]

 

i would highly i agree on going to efi there are so many advantges, Especialy the part that you dont have to rejet after you modify something. NICE. Besides who the FU(k wants to deal with a carb. No choke on a efi., no changin jets because of air temp during weather changes. Fu(k the carb. Cannidale came out with a 4 stroke efi.

 

In all fairness... I understand where SUPER is coming from... IMO, the technology is only good, if it proves itself reliable over time... for a street vehical, there are very few of the stresses that an off road vehical expiriences through it's lifetime ( very deep mud, water, extreme viberation, etc )... I can use the often voltage variance related blinking 4 X 4 / 2 x 4 lights as an example... a very small voltage varyance triggers all kinds of faults & codes on these newer complex quads... aside from all the safety gizmos, why on earth does the Prairies 4 X 4 engagement need to be so complex ??? it could easily be cable driven, & have positive engagement, when ever the operator decided they wanted it engaged ( I do like the front diff lock lever ), as oposed to the buttons on other quads... a lock on the lever similar to the parking brake, would have been an improvement though...

we are going to be stuck with thse technological improvements, so it's best to get used to them... after everyone has had the EFI's out for a few years, the bugs will get worked out of the system, & they will prove themselves reliable... we as a family, will likey always have 2 or 3 quads, & momma's will likely be the one with the electronics, while mine will always probably look like it escaped from Monster Garage...LOL...

 

Sounds like you guys have been reading too much ad copy from Polaris. [img]i/expressions/face-icon-small-smile.gif[/img] IMHO, most of the promised benefits of EFI are theoretical, or marginal at best, compared to a well tuned carb. My carb bikes start well, idle well and run well. Sure, my EFI vehicles don't require a manual choke, but using a manual choke isn't a big deal to me. The only real performance difference I've noticed is the compensation for altititude changes. However, most people rarely go on a ride that involves an elevation change of several thousand feet. I'd still rather rely upon the simple physics of a carb and the reliability of gravity and vaccum which seem much less vulnerable to moisture, vibration and fuel contaminants than are computer chips, pumps, sensors and injectors. I have enough problems with my computer at home! Don't worry though, EFI is comming, but the real reason is because the EPA will require it as a means of reducing the (already minuscule) emissions for the ATV community. However, the manufacturer's marketing depatments will pitch it to us as a worthwhile performance enhancement. Anway, I've got to go now, a few of the wooden spokes on my wheels need to be replaced [img]i/expressions/face-icon-small-wink.gif[/img]

 

For me EFI is all about not wanting to worry about jetting. I live at 6000 feet above sea level and ride all the way up to 13000+ feet and have ridden down to 4000 feet as well. It is impossible to properly jet for that. So I run lean at the lower altitudes and rich at the altitudes. My bike is tuned for the 8000-10000 foot range since that is where 50% of my riding is at. With EFI I don't have to worry about jetting. For instance I thought of going to the nation ride in TN this year since i'm from there and decided it wasn't worth having to retune our ATVS when I got there. With EFI I would not have had to care. So I will buy a brute force when it becomes EFI and has been out for a year to prove the system.

 

having a fuel injected snowmobile,I would rather have carbs .fuel injection works great but it is very expensive to do any mods.fuel injection only allows for variables that have been programmed and cannot compensate properly for airbox,exhaust,engine mods without buying a chip or a fuel pressure regulator.it takes the manufacturer a lot of time to write the programming and it is not easy to change.