This is a guide on how I personally do a TB swap, this installation will be a little more in depth as it will be of installing a new 2016 1000R 54mm TB and simple modifications to install on a 2012-2015 Canam atv.
First step remove seat 🙂
Second step remove 3 plastic panels

3rd locate TB
4th remove all 3 clamps completely

Locate and loosen off the (2) 10mm nuts



Will need a few tools similar as this to wedge the air box up about 3/4" from the top of the frame

Now use them to wedge under the airbox, make sure not to apply too much pressure and ensure the airbox isn’t freezing cold as plastic becomes brittle at cold temps


Now with the wedges in place you can see how much the TB lifted out of the lower rubber boot
Now turn TB and remove the TPS(throttle position sensor) and air idle valve solenoid connectors

Now to make the TB come out easier I use a heat gun to warm up the rubber boots to make them more flexible

Now with the boots warm to the touch gently pull the TB out


Simple as that, now the following will regard about doing a 54mm TB install
The difference between 46mm TPS (left) and 54mm TPS (right) the 54mm TPS will not work as it will fail to calibrate when doing a TPS reset but it has the same connector, also will cause an engine light and limp home mode if tried 
The old 46mm TPS works on the 54mm TPS besides one hole lining up to nothing, simple fix, 2 zip ties, 1 for holding the TPS tight to the TB and the other for piece of mind


Removal of the throttle cable is straight forward and install is the reversal of removal 


54 (left) beside the 46 TB (right)

Now to install TB, apply heat again to help ease the TB back into place

I slide the bottom of the TB in first since the bottom rubber boot is much more beefy then the top boot


Bam it’s in its home

Now remove the wedges placed under the airbox, tighten the (2) 10mm nuts back up on the airbox, reinstall 3 clamps and loosely tighten them, reconnect TPS and air idle valve solenoid connectors, turn throttle body to correct position and tighten clamps and re zip tie the throttle cable back into place. Reinstall plastic panels and reset TPS

Now reinstall the seat and adjust fuel controller if needed and enjoy the new found throttle response 😀
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