Sidewinder stock dyno results and muffler options - HCS Snowmobile Forums

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Old 11-08-2016, 05:41 PM   #1 (permalink)
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Default Sidewinder stock dyno results and muffler options

I'll be posting some graphs and spread sheets with the results in the morning. here is a quick overview-
Stock 200.6HP @ 8750 RPM @ 10.0psi
Bikeman Full Velocity 225HP @ 8900 @ 11.5 PSI overboost is created by more efficient flow and is sustainable with in stock ECU programming.
Bikeman Powder Lite 230HP @ 8900 @ 11.5 PSI overboost is created by more efficient flow and is sustainable with in stock ECU programming.
Above 9000 RPM the Factory program does lean out, to run without a program you must clutch for 8800-8900 RPM Tune is recommended.
we will be releasing ECU options shortly as well!

Update***
I have been spending a lot of time on this new platform and it is looking great. There are limiters deep in the ECU that prevent going over 13.4 PSI but with some hard digging we easily bypassed those. There is more to be had than what we have here but I figured you all would like to see a preview of what we have coming.this is what our power levels will be approximately

Stock muffler - [email protected] [email protected] [email protected]

Mufflers 91octane tunes go like this [email protected] [email protected] [email protected] [email protected]

Muffler + 100 octane [email protected]

Muffler + 110 octane [email protected] 18psi

Muffler + VP C16 [email protected]

I am working with Patrick at Swedish Mountain Products to do some field testing because they currently have snow.

We always measure Horsepower at the engine when developing Tunes because its the only accurate way to eliminate all the other variables.

We will also have cold air intakes, charge tubes and intercoolers soon!

Let me know what you think!
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Last edited by [email protected]; 11-15-2016 at 01:15 PM.
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Old 11-09-2016, 12:23 PM   #2 (permalink)
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Quote:
Originally Posted by [email protected] View Post
I'll be posting some graphs and spread sheets with the results in the morning. here is a quick overview-
Stock 200.6HP @ 8750 RPM
Bikeman Full Velocity 225HP @ 8900
Bikeman Powder Lite 230HP @ 8900
we will be releasing ECU options shortly as well!
Just picked up my sidewinder and ready for some upgrades. Wow.... a 30 HP exhaust muffler. SOUNDS MAGICAL. Lets see some pictures. And what options will you guys have for ECU tuning?
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Old 11-10-2016, 07:29 AM   #3 (permalink)
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30 HP is not going to happen by just changing muffler. That's a good sales pitch.
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Old 11-10-2016, 11:43 AM   #4 (permalink)
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There's other companies outside of bikeman seeing the same gains from exhaust changes - it seems the stock muffler is really choked up.

Looking forward to what you came up with Joey!
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Old 11-10-2016, 02:02 PM   #5 (permalink)
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30 HP is not going to happen by just changing muffler. That's a good sales pitch.
Remember that the outlet manifold is built into the muffler so that makes a big difference as well. These sleds really are choked up from the factory.
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Old 11-10-2016, 03:40 PM   #6 (permalink)
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Plus it up the boost a few psi. 30 hp has been seen many times on this new motor from a muffler swap. But its looking like you need to flash the ecu after a muffler swap running a little lean.........
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Old 11-10-2016, 07:27 PM   #7 (permalink)
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Are you guys recommending a tune with the new exhaust? Are you seeing the A/F leaning out to an unsafe level with the can?
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Old 11-10-2016, 07:44 PM   #8 (permalink)
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Current Sled(s): 18Axys,18SD850,17XF8000,17YamSW,18CTEC800
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Quote:
Originally Posted by Team Blue View Post
30 HP is not going to happen by just changing muffler. That's a good sales pitch.


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Old 11-10-2016, 07:56 PM   #9 (permalink)
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Current Sled(s): 18Axys,18SD850,17XF8000,17YamSW,18CTEC800
Previous Sled(s): Just about everything
Location: Stillwater, MN
Favorite Riding Area: Powder, Trees, Trails, lakes
18-19 Mileage 6500
17-18 Mileage: 4000
16-17 Mileage: 5000
15-16 Mileage: 4800
Age: 41
Riding Since: 1978
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Quote:
Originally Posted by Team Blue View Post
30 HP is not going to happen by just changing muffler. That's a good sales pitch.


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Old 11-10-2016, 07:58 PM   #10 (permalink)
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Current Sled(s): 18Axys,18SD850,17XF8000,17YamSW,18CTEC800
Previous Sled(s): Just about everything
Location: Stillwater, MN
Favorite Riding Area: Powder, Trees, Trails, lakes
18-19 Mileage 6500
17-18 Mileage: 4000
16-17 Mileage: 5000
15-16 Mileage: 4800
Age: 41
Riding Since: 1978
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Quote:
Originally Posted by Team Blue View Post
30 HP is not going to happen by just changing muffler. That's a good sales pitch.


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