i was just on ebay and was looking at a performance chip for the 850 and looks interesting has anybody heard of this and running one on there 850
PB PERFORMANCE CHIP POLARIS SPORTSMAN 850 EFI XP +30 HP:eBay Motors (item 260457065514 end time Aug-11-09 17:39:25 PDT)

 

It's a box filled with magic air and an LED light.

$30 for 30 HP.......if it was true, everyone would have one.

 

I agree snake oil. unless you spend the bucks $200.00-$400.00 for a new PROGRAMED CDI/EFI it will be money throwed away. You pay for what you get!!

 

Ditto on the last post. If it was that easy to pull 30HP by plugging in a new box they'd be doing it at the factory. Check out dynatek, dobeck, or power commander on ebay. These are the top of the line programmers and give @ 5HP. If you are looking to up the hp and have the $ Big Gun offers a complete kit with full exhaust, dynatek programmer, and K&N filter for @ $640 on ebay.

 

ill just order the HMF Swamp XL and the EFI Optimizer soon
anyone know how much HP the 850 would have with that?

 

The overall consensus was not much for the HMF stuff.

It seems that the clutching mods worked the best right now.

 

I agree with roofer. Best bang for your buck in the low end grunt category is a clutch kit. Worth every penny IMO!

 

Who carries clutch kits for the 850??

 

Google quadshop customs or hotseat.

 

Yep a good clutch kit has the most noticable change for the low buck mods..I have a QSC kit and it made a very noticable difference in bottom end,not only with the 32's but with the 26's as well. And apparently they have an even better set up for those who run stockish sized tires.
Exhaust..well an aftermaket exhaust makes it sound alot faster..lol
Seriously...I think HMF is as good a choice as any for the XP..it sounds great and gains aren't much different far as I can tell with any of them...they add a tad..but nothing to get too excited about.
I for one don't think any of the companies are able to get any great power gains from exhaust on an otherwise stock 850...I'm guessing the 850's corked up somewhere other than the stock exhaust...ie heads/valves,cam profile ect..untap that and the exhaust situation would be totally different..