xp airbox?

[Bigxpdaddy]

still getting bogging in deep powder because vent is plugging and u have to keep cleaning. Have heard a few things about adding flowrite vents in airbox.
Any ideas and pics of any installed flowrites. thanks Mike

 

[winter brew]

Just put 2 in the back of the box.

 

[canucklehead]

 

[screagle2]

vents

Just put 2 in the back of the box.

Vents in the back of the airbox, bypass the sensors and can make you run lean at wot.......carefull..........

 

[Hotboat]

I was going to put the vents in the same place the other two fellas did but I was concerned about it causing a leaning condition. The mass air flow sensor is in front of the carb air box so the computer is not able to compensate for the additional air coming in the back door. I dissembled the top of my sled to gain access to the main air box. I then found a great spot to put two 2.5 vents and the best part is ALL THE INCOMING AIR will travel through the mass air flow sensor. Also after all the pannels are installed its much more difficult for snow to clog the vents because air is being pulled from all directions under the instrament cluster. I may be wrong about the potential leaning condition venting behind the MAF sensor but I also run NOS and I'm not taking the risk!!!!!!!! By the way it solved the plugging problem. I was in 3-4 feet of fluff and NO BOGGIN!!! Hope this helps.

 

[Hotboat]

Vents in the back of the airbox, bypass the sensors and can make you run lean at wot.......carefull..........

Yup.....

 

[Sledsniper]

Thats what I did.

I was going to put the vents in the same place the other two fellas did but I was concerned about it causing a leaning condition. The mass air flow sensor is in front of the carb air box so the computer is not able to compensate for the additional air coming in the back door. I dissembled the top of my sled to gain access to the main air box. I then found a great spot to put two 2.5 vents and the best part is ALL THE INCOMING AIR will travel through the mass air flow sensor. Also after all the pannels are installed its much more difficult for snow to clog the vents because air is being pulled from all directions under the instrament cluster. I may be wrong about the potential leaning condition venting behind the MAF sensor but I also run NOS and I'm not taking the risk!!!!!!!! By the way it solved the plugging problem. I was in 3-4 feet of fluff and NO BOGGIN!!! Hope this helps.

I agree with you.I did the same.Works great, was worried about the air sensor, this way it all passes the sensor.

 

[trinitypowder]

I put holes in the back of the box. These sleds are typically jetted rich, so the holes in the back shouldn't hurt anything but rather help with an HP or two. Just make sure to do a WOT plug check. By the way, the bog will disappear!

 

[Bigxpdaddy]

Thanks for the pics and great advice,man I love this sled

 

[catfreak]

Man thats a pretty workbench

 

[winter brew]

Has anyone seen a engine go lean because of this? Isn't the sensor just a barometric sensor? Is the incoming air a different density if it comes in the back of the box vs the side?

 

[MT_mtn_climber]

Has anyone seen a engine go lean because of this? Isn't the sensor just a barometric sensor? Is the incoming air a different density if it comes in the back of the box vs the side?

I'm with Winterbrew on this, don't think it's a volume sensor. Luckily I've been in some extremely deep powder and haven't had the bog problem yet, might do this anyway. Another thing is the air coming from the back air box will most likely be warmer, possibly saving you form a lean condition.... It would be interesting to have sesors at the stock inlet and the "add-ons" in the back to see differences.

 

[newtrout]

Has anyone seen a engine go lean because of this? Isn't the sensor just a barometric sensor? Is the incoming air a different density if it comes in the back of the box vs the side?

True, but temperature impacts pressure directly (I know that you know this). If the air coming in the back of the box is colder because the bypass valve is pulling warm air past the sensor from under the hood, then..........

 

[PJ-Hunter]

My dealer did the same thing with the Flowrites in the back with his personal sled, my sled and several other test sleds. I have ran mine with this setup twice in very deep powder and never bogged once. Haven't experienced any lean conditions.

 

[HOOTS]

Have two TPI valves in the back of my box & held her to the bar for 25 mi run dwn the mtn trying to stay with a cpl of Dragons and temp was dwn close to zero deg. No problem. Had me little worried so I did a plug check as we got to the loading zone. Plugs were good. I'm calling it good to go as we went from over 10,000 ft dwn to little under 6000ft with cold temp. 5 days of over the hood pow & no bog.

 

[trinitypowder]

I've had mine between 9,000 to 12,800 feet, o problems. Plugs look just fine. I put two 2x3 holes in the back of the airbox and slipped an Xr650r airfilter in between the holes and the tank to help filter the air a little better. The XR650R air filter is only about 1/2 inch thick by about 6" tall and 12" long. It fits perfectly in there. I pulled it out after the first day(almost blew a 166 belt) and was amazed to see how much belt dust was on the filter. If you do this, make sure you have something "cleaning" the air going in

 

[killer]

still getting bogging in deep powder because vent is plugging and u have to keep cleaning. Have heard a few things about adding flowrite vents in airbox.
Any ideas and pics of any installed flowrites. thanks Mike

me i took my air box right out, i have pods and it has not blowen up

 

[screagle2]

vents

My dealer did the same thing with the Flowrites in the back with his personal sled, my sled and several other test sleds. I have ran mine with this setup twice in very deep powder and never bogged once. Haven't experienced any lean conditions.

Any place ahead of the horns is OK, they are the first step in calibration. You will be allright in deep snow, but watch carefully if you are running down the trail at wot, as that is where I believe you will run lean........

 

[Hotboat]

Any place ahead of the horns is OK, they are the first step in calibration. You will be allright in deep snow, but watch carefully if you are running down the trail at wot, as that is where I believe you will run lean........

I agree.....

 

[Goose Lake]

The belt dust thing would be the issue for me...even though the bypass is wide open to belt dust...amazing. Noise is something maybe to consider...might be quieter one way or another. Goose