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Discussion starter · #21 ·
Mike , I wasn’t aware they play that rpm Game also. Wasnt there something about them loosening up protections at least on 25 tunes ? I think you ran a 25 stock tune also. Is the 25 more stable ?
Oh they do and funny no one talks about it. I never ran the 24 tune on the trail, only did lake testing with it at that time. I like the 25 flash better. It has timing and fuel changes, less of each. The 25 flash seems more forgiving with rpms and hits harder off the line. The rpm drop with the Boost isn't quite the same as NA. For the Boost its from heat soak, the turbo/intake temps get hot and it loses hp. The ECU is not cutting power down (as long as engine temps are not high). With an NA sled you slow down, let it idle and it recovers right away, or as fast as the egt's come down. The Boost needs a full cool down to recover. The first time I trail rode it I thought wtf is this going on. Called my buddy and he laughed, he said a warmer day are even worse and we always under clutch ours for trail and the pump gas tuned ones are more affected. A different friend and me had our Boost on the lake, it was 40+F out. His sled had a pump gas tune in it and was noticeably slowing down as we made passes. Eventually after making runs his 210+hp trail tuned Boost ran the same exact numbers mine was running with the 25 flash.
Love the color!
Thanks! That color is actually painted on too, unlike the rest with colored plastic that scratches if you look at it wrong lol.
 
Hopefully they do and it comes with higher flowing turbo so it can take advantage of the extra cc and then I'll buy one of those.

I paid a bit less then that for my 24 new and I thought I had a great deal at the time.

Not saying none of them break but the Boost sleds I'm around have been very reliable other than the p22 clutches.

I'll make you a deal on mine, runs better than most...

View attachment 2169475
Seeing boost identical for 16,500… seen a 2025 9R XCR for the same.. they are out there and can imagine they will only go up
 
Oh they do and funny no one talks about it. I never ran the 24 tune on the trail, only did lake testing with it at that time. I like the 25 flash better. It has timing and fuel changes, less of each. The 25 flash seems more forgiving with rpms and hits harder off the line. The rpm drop with the Boost isn't quite the same as NA. For the Boost its from heat soak, the turbo/intake temps get hot and it loses hp. The ECU is not cutting power down (as long as engine temps are not high). With an NA sled you slow down, let it idle and it recovers right away, or as fast as the egt's come down. The Boost needs a full cool down to recover. The first time I trail rode it I thought wtf is this going on. Called my buddy and he laughed, he said a warmer day are even worse and we always under clutch ours for trail and the pump gas tuned ones are more affected. A different friend and me had our Boost on the lake, it was 40+F out. His sled had a pump gas tune in it and was noticeably slowing down as we made passes. Eventually after making runs his 210+hp trail tuned Boost ran the same exact numbers mine was running with the 25 flash.

Thanks! That color is actually painted on too, unlike the rest with colored plastic that scratches if you look at it wrong lol.
Would an aftermarket water/meth system be viable on one of these? Not sure if anyone has tried or mentioned that before? Maybe. It works for skidoo.
 
Discussion starter · #25 ·
Would an aftermarket water/meth system be viable on one of these? Not sure if anyone has tried or mentioned that before? Maybe. It works for skidoo.
Water/meth would help more for lining up and racing your buddies then on the trail. I don't think you would want to be spraying at part throttle the entire time trail riding. I think ski-doo does it at wot only?? I run water/meth on my race turbo sled, it comes on automatically at around 6 psi but I don't have it setup like ski doo does. They are not seeing the full benefit from it.
 
Only a 2yr warranty hurts new sales and then the perception given from Polaris that they lack confidence in the engine to provide a 4yr warranty hurts resale.
I’m not sure why either. Like I said from my observations of local dealers that sell good volume the boost stays together better than 650s for sure and I think better than 850na sleds.
 
Water/meth would help more for lining up and racing your buddies then on the trail. I don't think you would want to be spraying at part throttle the entire time trail riding. I think ski-doo does it at wot only?? I run water/meth on my race turbo sled, it comes on automatically at around 6 psi but I don't have it setup like ski doo does. They are not seeing the full benefit from it.
I am pretty sure it’s only spraying at under heavy throttle on the doo. If it was doing it at part throttle they would be going through fluid like no other
 
Guys in my group with “upgraded” after market turbos and partial and or full race gas tunes, have learned they need to run with their scratchers down on the trail pretty much all the time (even in good snow conditions it seems) to keep the power from falling off

yes we burn/waste Pails of fuel just trail riding hot around here sometimes
 
I think this is a situation where Polaris felt the market needed a Boost, so they made, then realized people didn't actually want to buy it. The fact that the first version didn't run all that well didn't help and then throw in the standard "low snow years" comment. I feel Polaris muddied the waters with the 9R. A stock N/A 850 isn't exaclty a slouch. When there isn't a night a day difference between an 850 compared to a Boost and 9R, it's a tough sell to get thousands of dollars more, and also get less warranty.

If I'm Polaris I'd make the Snowcheck deposit $2,500 on premium sleds. It's too easy to walk away from $500 on a $25,000 sled and it leaves the dealer stranded. They need to drastically reduce the price, well beyond $500 to move that sled. And that's not been easy the past two years.
 
Damn I wish. Around me the 22's are cheap cause they had lots of issues but the 23's, 24's, 25's seem to be holding their value better than the Doo turbos. Which sucks cause I'm looking for a 24 165 khaos.
 
Discussion starter · #35 ·
I think this is a situation where Polaris felt the market needed a Boost, so they made, then realized people didn't actually want to buy it. The fact that the first version didn't run all that well didn't help and then throw in the standard "low snow years" comment. I feel Polaris muddied the waters with the 9R. A stock N/A 850 isn't exaclty a slouch. When there isn't a night a day difference between an 850 compared to a Boost and 9R, it's a tough sell to get thousands of dollars more, and also get less warranty.

If I'm Polaris I'd make the Snowcheck deposit $2,500 on premium sleds. It's too easy to walk away from $500 on a $25,000 sled and it leaves the dealer stranded. They need to drastically reduce the price, well beyond $500 to move that sled. And that's not been easy the past two years.
Exactly, there isn’t a night and day difference between a NA 850, Boost and a 9r in stock form and for the prices, there should be. The 9r and 850 make about the same and the Boost is up 15 but it’s heavier. The Boost shines in more open areas and upper midrange speeds.
I think reliability is about the same with those three sleds if you don’t consider the p22 clutch. I wonder if the real reason the Boost and 9r come with less warranty is to entice buyers to purchase more warranty.
Damn I wish. Around me the 22's are cheap cause they had lots of issues but the 23's, 24's, 25's seem to be holding their value better than the Doo turbos. Which sucks cause I'm looking for a 24 165 khaos.
The Doo turbos are complete turds
 
There aren’t to many production 2 stroke sleds that you can add over 100 hp to with the proper fuel and tune. That’s the diversity of the boost, octane dictates your power level. At 4.5 psi on the trail , I for one have no desire to ever swing my leg over a NA ever again. There is just no thrill ..also no rpm issues.
 
There will always be a market for cutting edge performance trail sleds. I just feel the market is getting smaller and smaller every year. Far more guys seem to want to put money in their sleds that ride back country. I've never been to Tug Hill and can't speak for what goes on around St. Germain, but most guys would rather have a reliable sled that can handle 2,000 to 4,000 trouble free miles than an extra 15-20HP and having thier clutch explode.

I ride a lowly little 650 SBA. That thing makes about 135-138HP. It used to be back in the day to do that with a 650 you needed a set of Decker pipes, porting, probably some carb work, and milled head. Your left pocket was filled with main jets and your right was filled with spark plugs. It tried to kill you at every corner.

I do not think sled development will end, but we may be reaching the pinnacle.
 
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