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Turbo or SLP kit

That 2.1" trim would make a HUGE diff in the Bend Spring snow... wouldn't you think Rob???
 
It made a difference ALL SEASON LONG! Deep light, deep heavy, slush, hard pan...didn't seem to matter. Improved the sled universally. Same theory as always doesn't matter on the snow conditions. The stiffer lugged 2011 version of the 5.1 was identical in performance without screw inserts to the previous version with them.
 
Bend snow? I saw everything from slush to untouched two feet of fluff (one morning it was 26* on 10" of poof snow right in the parking lot) in Bend over memorial day weekend. No difference to any other place you ride during the season. It made a huge difference ALL SEASON LONG from Wyoming at 11,000ft to the ranch in Eastern Oregon at 2,600ft.
 
Good points from Fbomb and Oberti.

On my pro with boost, i mixed 1 gallon race fuel each tank. Ran 1000 miles before had to replace reeds. Ran it from 2k feet all the way to 12k feet. Boondockers was great to keep it up to date with the latest programming.
Next years platform will be rock solid, with extra injectors to cool temps, will help save reeds.

Anyhow, have a buddy that has a really good running sled set up by SLP. Still has to add a little race fuel.

$ for $ the pump gas turbo is the best investment for fun.

The pro turbo sled has been relatively maintenance free (reeds, clutch cleaning, spark plugs).
My m8 pump gas turbo has been absolutely bullet proof. run it at 7.5lbs boost all day long. True pump gas performance (non ethnol of course) And i would run that sled against any 860, 900, SLP set up sled out there at any elevation. It just flat rips. :second:
 
Good points from Fbomb and Oberti.

On my pro with boost, i mixed 1 gallon race fuel each tank. Ran 1000 miles before had to replace reeds. Ran it from 2k feet all the way to 12k feet. Boondockers was great to keep it up to date with the latest programming.
Next years platform will be rock solid, with extra injectors to cool temps, will help save reeds.

Anyhow, have a buddy that has a really good running sled set up by SLP. Still has to add a little race fuel.

$ for $ the pump gas turbo is the best investment for fun.

The pro turbo sled has been relatively maintenance free (reeds, clutch cleaning, spark plugs).
My m8 pump gas turbo has been absolutely bullet proof. run it at 7.5lbs boost all day long. True pump gas performance (non ethnol of course) And i would run that sled against any 860, 900, SLP set up sled out there at any elevation. It just flat rips. :second:

Are you runnig the same set up as Lingo?
 
Dustin; Are you guys messing around with the timing like in the Dyno Tech article , I am interested to see the real world effects of these cheaper mods.
 
It made a difference ALL SEASON LONG! Deep light, deep heavy, slush, hard pan...didn't seem to matter. Improved the sled universally. Same theory as always doesn't matter on the snow conditions. The stiffer lugged 2011 version of the 5.1 was identical in performance without screw inserts to the previous version with them.

do you have pics of the 5.1 trim on the pro rmk?do you install screws or not?
 
pus1100 sorry no pictures of the track...holding still! No screws worked great on the PRO...I tried it with some traction screws as well but ran most of the season just trimmed and it was excellent. If you race or play on any ice then maybe some screws with the hex heads exposed but for traditional all around good mtn snow performance just nip off the nubs. I cut them so the nub group stays on one strand. Pretty simple stuff....do it by hand with a sharp knife and wd40. Electric turkey knife works great as well.
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PRO LIC photo shoot 1.jpg
 
SXviper...I met with a guy in Bend over Memorial Day weekend and he has a 2011 PRO with nitrous all else was stock. (don't know how he was clutched but I assume they tinkered with it in some fashion..him and his buddy are accomplished performance guys) Now obviously there are different kits and amounts you could throw at them so this is just one limited circumstance.

Our demo PRO with a $300 13.6 power addiction head, carl's clutching, and a trimmed to 2.1" stock 5.1 track was pretty much dominating the nitrous sled. Stock exhaust and no control box. We made over 10 comparison run tests on a drag strip at 660ft (6250 elevation 30*). He tried all kinds of variations of how he applied the nitrous. Some performed or equaled improvements but NONE were what you would call conclusively better then just adding compression and good clutching with a superior performing traction device.

By the end of this weekend I"m pretty sure he is going to duplicate our setup on his 2012 rather then messing with nitrous.

Not at all saying there isn't a place for nitrous or that it can't be a nice performance plus at the end of a big climb or super deep conditions that have eaten your HP at alt but it wouldn't be the first aspect of money for superior performance on these setups.

I just wanted to take a quick second here to clarify the results you have posted. It was not that your $300 head produced more power than the nitrous equipped sled that made it superior it was more so the fact that you were able to more efficiently put your hp gain to the ground. Performance goes so much further than just what you bolt onto your motor and most seem to miss that. I find it a little funny that the fellow you were racing was willing to bail on the nitrous and go to your motor mods. He's missing the point, without all the suspension, gearing, clutching, tack mods...ect your just going to leave him chasing his tail the next time you meet up. In the spirit of this threads original topic it is often best to go with the mods that your dealer or yourself has the most experience and tuning knowledge with. That is typically where you will see the best results.
 
Dustin; Are you guys messing around with the timing like in the Dyno Tech article , I am interested to see the real world effects of these cheaper mods.

Not realy...we don't have a way to change it properly at this point. It may be something we do in the furure but not right now..
 
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I think you are missing an aspect of the point rather then the nitrous guy. He won't be "chasing his tail" because we don't set sleds up to whip up on people and then leave them wondering. I'm not in competition with anybody concerning snowmobile performance. It's a business plain and simple. Completely show and tell. This experience was a lot less "racing" then it was testing and comparing the two vehicles in a like environment.

So yes you are absolutely correct that just bolting a head on does not necessarily mean you get a better running sled. It's absolutely a combination of many many things working in harmony. My post stated Carl's clutching, the track mod, and the head were the performance modifications versus his stock engine with nitrous and their own clutching. Hey come to think of it he didn't have Better Boards! Maybe that was it...I'll have to add that $200 to his bill!!!!!!:face-icon-small-win:face-icon-small-win
 
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