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post #1 of 6 (permalink) Old 05-06-2018, 01:12 PM Thread Starter
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Big Gun Power Box

Hey folks, I have a '17 850HL. I put a full exo exhaust, uni filter and a tfi power box on it. Wondering if anyone has set up the tfi?? Thanks
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post #2 of 6 (permalink) Old 05-06-2018, 02:02 PM
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I don’t have it, but am curious what your results were after installing the box. Any “NOTICEABLE” gains?


2015 Polaris Scrambler XP1000
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Mud Motorsports Gripper Seat Cover
Rogue Grille - Blk/Blk/Red
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Moog SSB Upgrade W/ Custom Zerk
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post #3 of 6 (permalink) Old 05-06-2018, 02:17 PM Thread Starter
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Well I installed an O2 sensor and am dialing it in....that being said I have noticed a real seat of the pants difference. Especially off the line.
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post #4 of 6 (permalink) Old 05-06-2018, 02:30 PM
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Quote:
Originally Posted by ovrkil View Post
Well I installed an O2 sensor and am dialing it in....that being said I have noticed a real seat of the pants difference. Especially off the line.
Finally someone with a definitive response!
I’ve been on the fence about whether or not to pick up the BG tuner as no one has been very convincing of their findings.
Looking for more out of the hole, for a 1000cc machine, coming from dirt bikes and MX, I personally find the 1K to be a bit of a pig.
Do you have a full exhaust or slip on?
I realize the 850HL is a totally different machine but I’ve found hope in your response.


2015 Polaris Scrambler XP1000
Red Bull Graphics Kit
Spider Graphix - Footwell Dacals
Mud Motorsports Gripper Seat Cover
Rogue Grille - Blk/Blk/Red
Pure Polaris Hand Warmers
Pure Polaris Thumb Warmer
GBC Grim Reaper - 26/9/14 - 26/11/14 on Hiper Sidewinder Beadlocks
All Balls Wheel Bearings FR/RR
ROX Speed FX Foot Pegs
CECCO Frame Braces FR/RR
CECCO Diff Cover
Uni Air Filter
EPI Clutch
Big Gun Exhaust
Moog SSB Upgrade W/ Custom Zerk
Powermadd Sentinel Handguards
Renthal G169 Grips

Gear
Leatt 5.5 V.05 Turbine - Helmet
Oakley Airbrake - Goggles
EVS Sport - Chest/Back Protector
OGIO Dakar - 3L Hydration Pack
Shift Recon - Pants/Jersey/Gloves
Alpinestars MXGP - Jersey
Alpinestars S-MX Air Carbon Mesh - Gloves
Alpinestars Tech 8 - Boots
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post #5 of 6 (permalink) Old 05-06-2018, 02:58 PM Thread Starter
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I put the full exo system on...had the evo slipon and swaped to the exo.
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post #6 of 6 (permalink) Old 03-13-2019, 06:01 PM
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did you figure out what settings to set the power box after installing an 02 sensor? currently trying to set my dads up on his 18 850 HL. with the stock setting when you plug it in with out tuning it, we found the plugs didnt have really any tint of black to them, and were kinda more white. he's running the evo u slip on.
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