I have same hang. I am 8 hours into my break in and thinking I will just throw a tune on it when it’s done. Dealer didn’t seem to have an answer about the hanging idle so I am not going to take it in. BS I have XHD springs in mine and can trail ride hard with the wife on back and not bottom out.

 

I got the regular hd springs cuz I was worried the xhd would be too stiff riding solo. I have the regular hd set on high. It will bottom on any hard bump but it’s rideable . Riding much harder she complains anyways lol. It will suffice I suppose . Having a good time

hows the xhd riding solo ?

 

Riding solo I can put them on soft with 2 clicks from full soft, rides amazing!! I can launch much harder, it’s not as much of a wheelie machine. Cornering I have great ski pressure. Only thing is rebound, it kicks back, but all the positives out weight the bad so I will take it. If I put it on med, it will pogo over small stuff if not riding hard. If I hold it to the bar, she will mash and ride soft, reminds me of my old M10 I had in my Edge chassis. LOL

 

pretty much spot on for me, even the crazy cruise control

 

115 speedo was about it on a smooth road today . Didn’t want to hold it much longer. I guess that’s decent for 450 lbs on the sled and only 120 miles on motor still in break in. 165 studs. 129. Cobra track

8300-8350 rpm entire pull. I’m assuming that may get to 8400 range with a few more hp after break in .

that’s way past peak correct? Why would polaris clutch them so far off?

 

115 speedo was about it on a smooth road today . Didn’t want to hold it much longer. I guess that’s decent for 450 lbs on the sled and only 120 miles on motor still in break in. 165 studs. 129. Cobra track

8300-8350 rpm entire pull. I’m assuming that may get to 8400 range with a few more hp after break in .

that’s way past peak correct? Why would polaris clutch them so far off?

I think because in the field/real world they like it in that 8100-8200 range better. 8400 would seem too high.

 

Long runs the hot pipe power peak increases. It will pull top speed just fine running to 8400.

Max acceleration is 81-8200. But according to Dynotech it’s within 1 hp from 7950-8200.

 

My boost is awesome
I must have a good one with no hang but sled idles at 1750 also.
I plan on loading it to pull 7950 and climb to 8100 down track
It doesn’t spin and goes.
😃
They run rpm’s high to keep away from deto.
The sled is going to be much faster at lower rpm’s but you have to do something with gas

 

Seems quite a few more positive reviews are trickling in on FB. Seen a couple pics and posts of stock boosts beating stock winders today

 

The more of these that get out of break in the more good things we will see !

 

I have had both
I say the boost is quickest out of the box sled I have ever owned. We have had a lot of 998s and 1100s.

I like mine

12 years old on a boost
😂
He says it needs some tuning

 

Mine feels good. Nothing is ever fast enough for me unless it would pull the bars out of my hands until 100+ lol. Im sure a built up 300+ hp winder may do that but I just don’t enjoy riding them as much.

im assuming having 200 lbs on the back two up will be a pretty decent hindrance ? How much will that hurt top speed? 5 mph?

 

Yes. Long strait icy road. Part of Adams trail it was called according to polaris 7s display. Near grand marais. 113-114 on speedo. Flashed 115. That’s all it had . Or all I was willing to hold it being still in break in. 260 rider and 150 rider plus gear plus 30 lb two up seat. 100 miles on the sled. Near full tank

in average trail snow not hard pack it would hit about 100-102 with some effort. Close to topped. I was two up all weekend

seen one other black and blue boost a couple times

 

That road has a long history for our group for racing. Probably no better place for speed on a rd.

 

Got about 6 inches of wet snow here . Went for a 40 mile ride .

Could be a coincidence and condition related. As it’s about 10 degrees warmer here and the surfaces not as smooth/fast. But tonight the sled was pulling 8200 and holding. It’s out of break in now. 290 miles. 12 hours. On my trip this weekend it was hitting 8350 rpm while still in break in

I’ll take it but prolly just conditions idk

 

Got about 6 inches of wet snow here . Went for a 40 mile ride .

Could be a coincidence and condition related. As it’s about 10 degrees warmer here and the surfaces not as smooth/fast. But tonight the sled was pulling 8200 and holding. It’s out of break in now. 290 miles. 12 hours. On my trip this weekend it was hitting 8350 rpm while still in break in

I’ll take it but prolly just conditions idk

I bet it still gets faster even though the break in status bar is gone. Wait until about 600 miles and report back. Spent last weekend with an assault boost . Seemed like every time we started it she was stronger. And more waste gate noises!

 

I never noticed the waste gate sound until yesterday either but I thought maybe I had to of missed it. Weird

 

We said the same thing, but it's getting better each time.

 

is it possible the break in period is also controlling the amount of boost so after break in it is at full boost therefore the wastegate is being heard more?

 

I would think so, but can't confirm. Makes sense though.

 

@1fastpolaris yours is tuned correct ?

 

No, I have N/A 850. My buddy has the assault boost. We were out riding together. I get him out of the hole for a couple hundred feet. I have Patrick Custom Carbon clutching with Ricks setup. Buddy has stock assault boost. Both of us have 2" tracks. Boost reels me in and pulls away eventually.

 

Crazy thing happened today buddy picking up my sled for the trip.

Sled wouldn’t start. Ended up being flooded. First time I’ve seen that on a newer sled.

 

Just did a quick 50 mile loop at cut river stopped on our way to Niagara Wisconsin.

Trails were relatively hard packed but this thing is definitely running a lot hotter than when I was two up last week. Never was below 120s and got up to 150 a couple times. So that’s a bit annoying . Was 108-120 before in similar conditions. Guessing because the sled is sitting a lot higher not being two up?

I also smelled something hot like burning rubber. I think it’s the rubber fitting on the oil line slightly rubbing on the secondary. Has a small groove jb it but not that close to hitting the oil line. I hope that’s all the hot smell was.

I’m more impressed with the mid range than the top end. Has insane pull out of corners and at trail speed. It wheelies way too damn much it’s insane and is wearing me out. Can pretty much lift the skis on command at any speed below about 70 lol. I put the block on two I’m thinking I should put it back to 3 lol

 

Was probably your slides you were smelling.

 

Nobody else had the smell but it crossed my mind. But then again my sled only has 300 miles on it maybe they are wearing in. Checked the track tension before I left was good

 

I’m running blocks at 4
Tie strap that line back from the belt
That’s a bad day if you cut an oil line 😉

 

Is 150 temp anything to worry about? Never went above that at worst

 

Mine runs cool compared to the BRP 850 we run with.

Sent from my SM-G781W using Tapatalk

 

Get some scratchers maybe
That’s up there

 

Extended the flap. Dropped temps about 10 degrees on average. Most of the trails are nice and smooth but not much soft snow at all very hard and thin. Sled stays 120s 130s now.

Marked the primary clutch with a pen. Checked it when I got back. Totally gone. So that’s a good sign that I’m getting full shift correct? I’ve read some of the boosts are not

 

If your Boost has stock 23/37 gearing, it will be running at 110 mph at 1:1 shift ratio and 8250. That is at least 10% less than at full shift where it will be at 121 true mph at 8250 pm at full shift. Mph will increase by 1.5 more mph for each 100 engine rpms above 8250 when at 1:1.

You must be careful when using a mark placed on the fixed sheave and thinking that just because it was wiped off you reached full shift when at WOT. This is because the belt will sometimes reach the top of the primary as you let off the throttle before the 2ndy closes enough to take up the belt slack. You should let the throttle off gradually to get an accurate test.

 

Definitely some smart fellars around here, just have to sift through the BS at times. I had an old timer tell me the same thing patriotic just said when I was about 15. Still remember all the things he told me. 👍 A lot can be learned by opening your eyes and ears and shutting your drink sucker. 🤣

So much can be gained by just making sure everything is working like it should.

 

Never stop learning
Ask ask and ask more
👍🏻

 

Had my visor plug get ripped out of my helmet today. Tore the wire right out. But anyways for whatever reason after that my hi beams won’t switch on and my punch lights won’t turn on now.

Pretty odd coincidence but did I maybe blow a fuse or what? Had no problems with the lights previously

 

Yes, you blew the 10A fuse in the box. Should be the front center one.