Purchased a new 2022 Uforce 800 last year and installed a windshield that is a two part vented at the bottom.  Problem is it is too hot to drive especially for the passenger.  took for a ride with 2 bars showing on engine temp.  By the time we went a mile down the road my wife complained about it being too hot.  I reported this to my dealer and their mechanic called CF Moto.  They stated that the unit was no longer being made and had moved away from that design as this was one of the main reasons.  Engine under seat put out too much heat.  I checked the internet and followed what some others had done with exhaust reflective tape.  Covered whole underside of seats and center console and wrapped what i could of the exhaust.  No luck  Heat is still up in the 120+ range on passenger side when sitting.  Dealer offered to trade it in this last week.  What are my options?  And I paid $12500 for a brand new machine last year and they want $2600 for a new 600 Uforce.  Is their any recourse?

[2015 Z Force 800 53/Trail EPS]

First I would have a hard time considering a 600 or a 500cc in any SxS..just not enough HP to do much..especially in a utility machine like a UForce. Second 90% of the heat coming in to the cabs on the Z's and most U's are from the radiators where the heat just blows around the "firewall" and fender plastics into the cab. I and many others took the time to stuff strips of 3"x3" memory foam all the way around our front plastic "firewalls" to stop it. It still can get in other places like through the center tunnels and open holes in the plastics.. but those can also be sealed. Then yes, all the center and rear plastics can be covered with heat/sound block material as well as wrap the forward exhaust. All this helps but isn't a 100% cure. I have cut around 80% of mine which makes it bearable but is always nicer with the flip windshield open in the hot parts of the day. For me the flip windshield was the best thing I could have done.   

You can also remove one of your windshield panels. 2 piece windshields give you options. If you have lots of bugs in your area, remove the bottom panel for airflow with a bug shield. If no bugs, remove the top section and you have a half windshield with dual vents still in the lower section. On really hot days remove both panels. So what you have got ready will give you options. 

Owners of a lot of UTVs from different manufacturers have similar complaints about cab heat and excessive engine heat.  It appears that the manufacturers are tuning the engines to run very hot and lean to meet EPA or some other government mandates.  Many have found that by reprogramming the ECU the heat can be dropped significantly while at the same time getting a bit more performance out of the UTV.  (Possibly removing or changed some of the limits on the engine as well.)  There are a couple of companies that can do this for the ECU's used on the CFMoto both here and in Europe (where they apparently have even more restrictions placed on the vehicle's ECU).  It requires removing the ECU and sending it to them for reprogramming.  Or you can try and find a replacement ECU and have them reprogram that one.  CFMoto charges an arm and a leg for an ECU, but there are a number of much less expensive ones to be found on eBay or AliExpress.  Be careful of the Chinese ones as some reprogrammers have had trouble with them and have bricked them.  I suspect, but don't know for sure, that any replacement must have the same computer board and match the first 7 characters of the ECU ID (the last three characters probably refer to the progamming in the ECU).

http://www.atvflashing.com appears to have a lot of experience doing this and Ray, the guy there, is very responsive to e-mails.

Owners of a lot of UTVs from different manufacturers have similar complaints about cab heat and excessive engine heat.  It appears that the manufacturers are tuning the engines to run very hot and lean to meet EPA or some other government mandates.  Many have found that by reprogramming the ECU the heat can be dropped significantly while at the same time getting a bit more performance out of the UTV.  (Possibly removing or changed some of the limits on the engine as well.)  There are a couple of companies that can do this for the ECU's used on the CFMoto both here and in Europe (where they apparently have even more restrictions placed on the vehicle's ECU).  It requires removing the ECU and sending it to them for reprogramming.  Or you can try and find a replacement ECU and have them reprogram that one.  CFMoto charges an arm and a leg for an ECU, but there are a number of much less expensive ones to be found on eBay or AliExpress.  Be careful of the Chinese ones as some reprogrammers have had trouble with them and have bricked them.  I suspect, but don't know for sure, that any replacement must have the same computer board and match the first 7 characters of the ECU ID (the last three characters probably refer to the progamming in the ECU).

http://www.atvflashing.com appears to have a lot of experience doing this and Ray, the guy there, is very responsive to e-mails.

I took a chance and decided to give ATVFlashing a try. I saw this business mentioned several other places and all good reviews. I sent my ECU about a week and a half ago. I received a notification email that it is in the way back to me and I should have it Saturday. It is advertised to provide smoother throttle response, more power and run cooler. My 2023 ZForce 800 trail is all stock and I really have no plans on modifying it. But all the things mentioned that the flashing will accomplish all sound like what I would like as a result.