Which EFI control box???

I've been looking at aftermarket EFI control boxes for my RZR, but out of all the different folks I see selling them, there only seem to really be 2 or 3 different boxes. All the rest look like the same box, just re-packaged. I'd also like to find something that has timing control in it, which none of the ones I've found seem to. Fuel control is great, but can only take you so far. It's been my experience that manufacturers set stock timing curves very conservatively, planning on a "worst case" scenerio; i.e. poor quality fuel, high temperatures and rough usage. For someone who keeps their equiptment in repair and is willing to use premium or even race fuel, I think there's way more power to be gained on the timing side of the tuning equation than just the fuel side alone.

Is there anything out there that can accomplish this or is this just wishful thinking?? Do any of you have any experience (good OR bad) with the EFI control boxes out there right now??

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'08 Green RZR
Born on 10.1.07
Two Bros. pipe, UNI filter, PCIII USB, G-Force 5pt belts, quick-release steering wheel, Venom 4k winch, Longacre rear view mirror, Walker Evans coilovers, TCP half-doors and more.

SOLD

I used A DynoJet PCIII on my KFX450R (ATV) and it works great. Easy to download new maps.

KFX450R PCIII Product Review

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Hot Seat Performance has remapped CDI boxes that address fuel, timing, and rev limiter

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Over 100 career podium finishes.

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The Hot Seat Performance unit sounds interesting, (I just looked up their website) But they're pricey and you only get a "fixed" program. I guess I just have to wait with my fingers crossed in hopes that someone will make a controller that does it all!! (Any sponsors out there listening???)

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'08 Green RZR
Born on 10.1.07
Two Bros. pipe, UNI filter, PCIII USB, G-Force 5pt belts, quick-release steering wheel, Venom 4k winch, Longacre rear view mirror, Walker Evans coilovers, TCP half-doors and more.

SOLD

I'mnot sure if they did one yet but did you check with Holz Racing?

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:Polaris Parts Catalog: :RZR Manuals:
:08 Service Manual: :My RZR Project:

Keep It Wet and Dirty!

is the mpi cdi box good or bad

I have put one on mine. It raises the rev limiter to 7000 and changes the fuel mapping some. I have ported the head, new cam, exhaust, clutch setup. I still have to put new intake system on it to let it breath now. I have also added the Boondocker box which can be tuned at any RPM. Still tuning on it right now. Just got a air/fuel meter to get the jetting right. BIG difference in power!

And that's with the MPI reprogrammed CDI and the Boondocker injector controller both, right?

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Romeo, MI

YEP, both. The MPI remap is for a stock machine with just differnet exhaust.

I bought the mountain performance cdi box but my rzr is in shop for air intake so i cant test it yet i will do a 100 foot or so test and a top speed test unit has 27 inch mud lights torq -43 offset rims highlifter lift kit no wheel spacers also have polaris goodies no engine mods clutch has a spacer still dealer is going to help me look at rzr and sportman clutch im trying to find out if people are changing the wrong part there is a washer #19 i think and limiter #4 i also think sportsman has a limiter and that might be thiner for more speed without belt riding to high my rzr still reads 58 on speedo but it takes a little longer to get there im happy to say i ran in a small mud bog at an articat dealer about 10 units polaris 500 800 700 articat 400 500 650 prawler kaw 750the mud hole was tough enough to take everyone out but the rzr when the prowler got stuck i park next to it said hi than drove out and pick up my good freind harps than put it in rev and backed through mud hole the look on the owners face was priceless still need info on mpi cdi

I just did Power Commander FI controller but could also run it with one of the CDI boxes from Mountain or Dirty Dawg to getyou everything you want. I dont know why anyone would run any other FI controller than the Power Commander as the other are not very adjustable re-stamped Dobeck units that are useless after any other mods than exhaust and airbox.

I just installed a PC III on my RZR also. It seems to have complemented my other mods well and I like the software and ease of adjustment. My only issue has been getting the "Accelerator Pump" software to work. After I connect the PC III to my computer, the regular software will connect and read just fine, but the Accel. Pump software shows that there's no box connected. Anyone else run into this issue????

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'08 Green RZR
Born on 10.1.07
Two Bros. pipe, UNI filter, PCIII USB, G-Force 5pt belts, quick-release steering wheel, Venom 4k winch, Longacre rear view mirror, Walker Evans coilovers, TCP half-doors and more.

SOLD

upgrade your firmware

Where do I download the new firmware from??? I"ve searched the power commander website, but can't even find a reference to it. I have version 2.3.0. What is the new one??

Thanks!!

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'08 Green RZR
Born on 10.1.07
Two Bros. pipe, UNI filter, PCIII USB, G-Force 5pt belts, quick-release steering wheel, Venom 4k winch, Longacre rear view mirror, Walker Evans coilovers, TCP half-doors and more.

SOLD

Power Commander General Downloads