Just curious why EFI doesn't have an Oxygen sensor. Would this change any performance characteristics or is it just for emissions? I notice the engine used in Frontier has one as seen in picture.


Frontier Engine


Treacherous

 

The atv uses a map sensor in the intake tract between the throttle body and the air box to correct for altitude and changing barometer.
The system runs strictly off the programmed map and manifold pressure correction. It doesn't correct for the oxygen at the exhaust sensor.
If they have done a good job on the base map it doesn't matter and they also have one less part to go bad.

 

Thanks for info!

 

gregery dude, i couldn't help but notice only 1 post in over 4 years! what's up with that? LOL!

-MT[img]i/expressions/face-icon-small-smile.gif[/img]

 

mtpockets,

How do you like your Warn 3.0? I'm thinking of getting one. The 3.0 seems more robust than the 2.5 and I like the fact that it has a lifetime warranty. I was looking at the 4.0 but then realized that it was for those other utility models.

 

Too bad Polaris didn't use the O2 sensor. It would have been alot easier to add exhaust, and other modifications. With the O2 sensor the computer would have been able to adjust for an over rich or lean condition by taking an exhaust reading.

 

Treacherous, my 3.0 is the strongest winch i'll ever need on an ATV. great investment. no regrets.