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Twin pipes

I've had 2 rides so far with the twins. It was a noticeable improvement! I was running SLP magnum weights with a blue/pink spring with just the lock set screw in them for the stock setup and was pulling 8250 rpm. After adding the twins, I added 2 screws per weight, which is 2.4 grams and am now pulling 8450 rpm at 9000 ft. The power does not seem peaky, it feels very snappy from 4000-8450. Now I'm just waiting for the heads to show up to add just a little extra.
 
iluv2fly said:
Dont judge until you ride it. Sleds have come along ways and this just might be an awesome setup. So far those who have rode the setup love it.
Click to expand...

If twins were better Polaris or Doo would already be using them. There is good reason they are not using them.

But whatever. Drop the coin bring a rope.. [emoji849]
 
Mentzel said:
If twins were better Polaris or Doo would already be using them. There is good reason they are not using them.

But whatever. Drop the coin bring a rope.. [emoji849]
Click to expand...

I disagree. OEMs will always use a (very) conservative "stock" pipe. They won't tune it to it's capability. And there is a very good reason for that. They must meet the biggest clientele needs... aiming for the center of the bell curve...the general masses.

And then there's always the EPA.

Twins are "better" in my experience.
The manufacturers haven't run them because offering those don't meet the needs of the general market. They can't justify mass-producing twin pipes for relatively small market.

I do not believe it reflects a lack of confidence in what twins can do for performance.
Twins just aren't for most people.

YES, they make more heat, can melt plastic and can be hard to fit.
BUT, they flow way better and make more torque and power than stock or any single pipe setup.

I've studied pipe Dyno sheets for a lot of years.
I've run stock single pipes, cut and modified stock singles, aftermarket singles and LOTS of twins over the last 20 years.
I ran twins on my carbed sleds from 2000 until 2012. I loved every minute of them.
I stopped running twins when I bought a 2013 only because twins were not offered any more.

I can tell you, naturally aspirated, I made more power and gave up no more reliability or runnability issues with my twins.

I was always clutched and jetted for conditions and elevation as the season or trip required.
I wasn't a "hood open all the time" person.

My twins weren't anymore "peaky", "finicky" or "unreliable" than the stock pipe for me.

With electronic mapping now days... holy cow, I suspect SLP will have a lot of satisfied twin customers.

Time will tell.
 
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Mentzel said:
If twins were better Polaris or Doo would already be using them. There is good reason they are not using them.

But whatever. Drop the coin bring a rope.. [emoji849]
Click to expand...

Heck I ride a 2016 800 axys with mtntk turbo that has run for 2000 flawless miles. Heck i got 1200 Miles out of my last belt. I absolutely love the setup, has been pull and go. I could easily ride this sled another 5 years. I just need to put some money into shocks and a 3" powerclaw track.
 
iluv2fly said:
Heck I ride a 2016 800 axys with mtntk turbo that has run for 2000 flawless miles. Heck i got 1200 Miles out of my last belt. I absolutely love the setup, has been pull and go. I could easily ride this sled another 5 years. I just need to put some money into shocks and a 3" powerclaw track.
Click to expand...

At sea level?
 
Just shy of a 20 horse gain, better fuel mapping, a tested clutch set up that more effectively uses the power, and weight savings over stock. Significant weight savings vs a turbo.

The riders we know that are running the twins say that they really shine in the trees and technical terrain, with good grunt, throttle response and better sled balance.

I like that there is no fuel mixing, tuning or messing around. Some premium pump gas and a little squirt of octane boost and you are rolling.

There are a few reasons some of the Boondocker Turbo athletes switched to them this season and ditched their turbo set ups. The above included.

Ours are installed and they are a thing of beauty!
 
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I have seen 3 slp twin 850, and all 3 riders said they can kind of tell there is more power. They sound like crap, and can't out climb a stock 850. All 3 guys said its not worth the 3000 cnd. And should of got Turbos.
 
Whelp, it sounds to me like the 850 with twins is legitimate. The numbers mtnclimber19 gives indicate significant power gains. Would love to hear from the guys who said it was a waste of money; not saying I don't believe it, but I have to take "a guy I rode with said" reports with a grain of salt. Maybe they just slapped the pipes on without a re-flash? The noise part of it I can believe: that's a pretty tiny can they include. $1400 with tuner is much cheaper than any turbo kit, it's lighter, and 180HP is nothing to sneeze at. If you want a ton of power or nothing, then turbo. Otherwise, this looks like a great package, and will probably get better with an updated flash at some point.
 
I'm curious how the twin setup is handling the stock 850 twin (one in the pipe, one in the can) EGT sensor setup? Are they only reading EGT from one pipe?

I'm also curious if anyone has done a legit "shootout" between a stroong running single pipe (with similar reflash) versus twins? Snowmobilers suffer from more "placebo effect" performance gains then any other powersports group-- I spent "X" amount of dollars..... its "waaaaaaayyyyyyy" better....... uh-huh.....

Personally-- I hate loud exhaust. (I work with 110dB Superbikes all summer.) Loud cans have NO place in public lands anymore. That is my main concern with the twins setup.
 
Murph said:
I'm curious how the twin setup is handling the stock 850 twin (one in the pipe, one in the can) EGT sensor setup? Are they only reading EGT from one pipe?
Click to expand...

Yes - one in one of the pipes and one in the can.
 
This is MY opinion over 3 weekends of testing and clutching.
The fit and finish and install of the twin pipe set is top notch everything lines up great and nothing gets hot or melts and they sound bad ass . They do make some power over stock but with the SLP safe mapping I feel it is not enough for the money IMO.
They are at there best on long pulls, the longer the pull the more power they make the pipes need to be hot hot hot to make power. It just takes to much time to get them hot and sometimes when you drop into the nasty there is no time to make a second run to heat up them pipes so you fall short on the power, where the stock pipe is always ready to go. So in short pulls with no run or in many other situations the stock pipe has the edge. Had slp given the option to pull fuel from the map it might be a different story. I tried them with the head and with out the head and had no change in performance and 10 different clutch combos and just dont feel they are worth the money for me and how we ride.
Also I just want to add that i'm coming off turbo sleds for the last 10 years and pretty much everything feels lazy to me at this piont, but if your gunna spend 2500.00 to 3k on twin pipes I think turbo is the way to go just more bang for the buck.
I love SLP products and there service but this setup does not do it for me and I truly gave it an honest effort.
 
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