Calling all the people that have test ridden a boost!! FUEL...
- Thread starter TheBreeze
- Start date
According to that Video the Doo Turbo runs like a fanner.
I don't know if they are tuned different. Taking a buddy's word that the 21 runs better. Ive rode both but not in the same season. They get them better each year without saying anything. People always ask what the best year is to buy. The last year of a model always runs the best. I always said a person was crazy for buying an early release because they always change a few things and the fall release always run better. What did i do? I bought the 2020.5. Didn't listen to my own advise.
1709,
I don't know your background, but you appear to have something to learn about variable boost/specific HP tuning. You need to look at things a different way.
Polaris, Ski Doo, Boondocker Sidekick/Agility (and probably others too) are NOT targeting a specific boost.
They are targeting a specific horsepower.
This is altitude compensating horsepower.
They adjust the timing and boost to achieve a specific target horsepower at the desired altitude range, which for Polaris it's 190ish from 0-10k feet.
If it makes 190hp and spins 8400 rpm at sea level AND at 10,000 feet, why would it need different clutching, except for changing snow conditions?
I don't know your background, but you appear to have something to learn about variable boost/specific HP tuning. You need to look at things a different way.
Polaris, Ski Doo, Boondocker Sidekick/Agility (and probably others too) are NOT targeting a specific boost.
They are targeting a specific horsepower.
This is altitude compensating horsepower.
They adjust the timing and boost to achieve a specific target horsepower at the desired altitude range, which for Polaris it's 190ish from 0-10k feet.
If it makes 190hp and spins 8400 rpm at sea level AND at 10,000 feet, why would it need different clutching, except for changing snow conditions?
Last edited:
Well there is a significant HP difference between the two, like 50 at 10k. Lessens the lower you go I suppose.
Always appreciate your take Terry; in my years here you’ve rode sleds from all the big 3 and give true unbiased opinions.
In terms of 1709; he just needs to look at that vid Jaynelson posted. That comparison is like turbo to non turbo (yes; 155x15 vs 165x16..but still!!). CRAZY!
Actually that’s the skidoo version; they utilize a conventional waste to get 4.5lb. This Polaris is a new beast! Let’s wait and see if Doo can get to 190hp at 10k’ in 2023....
S
Spaarky
Well-known member
Your BD kit depending on the turbo can only compensate from about 5,000 ft on up. That is because below 5,000 ft the wastegate can not bleed off enough air.
My 15 work separate wastegate would work almost exactly the same from 1000’ To 12,000+. Within a couple hundred rpm.
The stock turbo sled will do the same. It will be same weights from 0-11,000 ft.
ya, u bet. was just trying to point out that clutching can get skewed when u go outside of the compensating range. In the Boosts case >10k; in my case <5k
1
1709
Well-known member
Well what about this ? by you no need to adjust clutching, that`s not what he is saying, you guys should get together and get your story`s straight.
[IMG alt="kidder17"]https://www.snowest.com/forum/data/avatars/l/47/47677.jpg?1562023195[/IMG]
kidder17
Well-known member
Lifetime Membership
The Boost sleds that have been sent into Canada are clutched at 10000'. The areas they are being taken out to in B.C. are in the 5500-7000' range.....
Which one of his posts are you referring to.
Not sure what he has said, but I know I sat with Polaris engineers and we went over this sled for a couple hours.
Then I rode with them for a day...again...going over this pretty closely.
Also, with my Boondocker Sidekick turbo, I've learned a lot about altitude compensating turbo systems the last three years with that too.
Regarding continued testing and tuning: Has the EPA had their final say?
That is a good question. I would like to know does the EPA use fleet numbers/average and let manufacturers make exceptions? Does anyone know for sure? Not just someone said this on facebook logic. thanks.
1
1709
Well-known member
#tbt to Saturday onboard the @polarissnow Patriot Boost This sled for a Khaos 155 w/ Matryx Slash has been blowing minds....including mine 🤯 Also,... | By Dan AdamsFacebook
#tbt to Saturday onboard the @polarissnow Patriot Boost This sled for a Khaos 155 w/ Matryx Slash has been blowing minds....including mine 🤯 Also,...
www.facebook.com
not impressive at all, he could not even hit 50mph track speed with a 155 track with most of it in the air,
I was all hyped and excited about the boost until the turcotte vid that was posted. A 155, 60 lb lighter sled making less than 50mph track speed!! I know what my doo makes in those conditions geared down two teeth on the top!
At least the doo chose a fresh line where the Polaris chose to poach all the way to the top.
That vid did not help at all, and I agree with 1709, there seems to be info posted that’s being redacted, or misleading.
Like the industry leading three selectable mapp choices, no clutching changes from sealevel to altitude.
My Doo turbo has no problem over revving at 3000ft at home.
Im not here to bash but learn more about the Polaris, unfortunately the more I learn, the more I wonder. Hopefully I will get to throw a leg over one this weekend. Oh and BTW. The doo turbos are being dynoed at alot higher HP than the claimed 165.
At least the doo chose a fresh line where the Polaris chose to poach all the way to the top.
That vid did not help at all, and I agree with 1709, there seems to be info posted that’s being redacted, or misleading.
Like the industry leading three selectable mapp choices, no clutching changes from sealevel to altitude.
My Doo turbo has no problem over revving at 3000ft at home.
Im not here to bash but learn more about the Polaris, unfortunately the more I learn, the more I wonder. Hopefully I will get to throw a leg over one this weekend. Oh and BTW. The doo turbos are being dynoed at alot higher HP than the claimed 165.
C
Clarke673
Somewhere between too dumb to quit and flat earth
Lol [emoji38] all this speculation... if anyone knows me I was getting pretty agro towards polaris and then boom! Guess who was first in line for one of these? Personally can't wait to abuse mine! I mean that GENUINELY. We all know what skidoo brings to the table. probably the most advanced motor built by very conservative types... and then there's polaris with a chassis that has actually worked for most since 2011. Choice was SO easy for me. Beating a dead horse with all the speculation- trust me come Christmas there will be some of us posting videos. Maybe even sleds forsale? Who knows... you guys keep this up and we could link epstien to polaris by July! I dig it either way, but let's keep it in reality. These sleds were destroying skidoo before... on the track, the rmsha performances say enough alone.
Sent from my SM-N981U using Tapatalk
Sent from my SM-N981U using Tapatalk
C
Clarke673
Somewhere between too dumb to quit and flat earth
Doesn't matter what those commies say if it's not sold to them. Cali passed anti 2 stroke laws if I'm not mistaken They? They can smd. Terrorists at best and I do mean that!
Sent from my SM-N981U using Tapatalk
