The one limiting factor to your UTV when attempting to make more power is the fuel system. More specifically, the fuel injectors max out their duty cycle and efficiency the moment you tune your machine. Due to the increase in boost pressure, fuel needs to be added to the mixture to even out the additional air produced by the turbocharger. The other disadvantage to the stock injectors is that they can’t handle much more than 93 octane. Once ethanol is introduced to the mix, the stock injectors begin to break down since they are not capable of handling a higher ethanol content than 10% which is what pump gas contains.
Should You Upgrade Your Injectors?
Replacing your injectors might seem like a daunting task, but the reward of doing so is unmatched. With just upgraded injectors and a tune, your machine can gain 30+ HP. When bolt-on modifications are added to the equation, the possibilities open up as your injectors will be able to keep up with the demand of 250+ HP.
If you plan on keeping your machine completely stock with no sight of modifying it, your injectors will need to be replaced eventually as a standard maintenance item. Upgrading your injectors in a stock machine can still provide significant gains like improved gas mileage and slight performance when paired with ethanol.
Modifying your engine even slightly will require upgraded injectors as the duty cycle of your fuel system will be close to maxed out once a tune is applied to your ECU. Using different fuel types will also require new injectors as the fuel can be corrosive and wear out the stock injectors prematurely. While the stock injectors will work, their functionality will only be temporary as eventually they will break down and start leaking. No one want’s to deal with a leaky injector.
When upgrading your fuel system, it is a good idea to replace your fuel rail as it is a common failure point over some time as they are typically plastic. Agency Power offers a billet fuel rail option for the Can-Am Maverick X3 to avoid the possibility of the factory fuel rail cracking and leaking. Upgrading to a billet fuel rail will allow fuel to flow to the injectors much more efficiently while being able to handle any fuel put through it.
Standard gasoline is what most people are used to running in their machines, but believe it or not, there are much better fuel alternatives out there. Every gas-powered UTV is designed to run off pump gas from the station down the street but does not offer any true performance gains.
Running a higher octane race gas like 93 or even 110 octane can provide many benefits when it comes to performance. There are certain measures to take if going this route though. Upgrading your injectors and fuel system to handle higher ethanol contents or handle the leaded fuel is first up on the list. Followed by tuning, the potential to improve power just from the fuel you are using is significantly increased. Fuel that contains lead is great for making efficient power but can not be used in a stock machine with catalytic converters.
The use of ethanol can provide incredible gains in power and efficiency. The cooling properties that accompany ethanol make it a great option for those looking to make serious power. Using ethanol can also improve fuel efficiency due to the increased power output and burn efficiency inside the engine so no fuel is being wasted. One of the major downsides to ethanol is how abrasive it is to the fueling system which will require the need to upgrade your injectors along with your fuel lines and pump.