Injector swap

[beamslayer]

I have been told you can not swap out 11 with the 12 injectors I found out this to be BS you can . Now I was to understand that you can not use 11 ecm with 12 injectors because can not reflash . Now I friend said yes you can reflash a 11 ecm to run 12 injectors . Wow Does anyone really know ?

 

[mountainhorse]

Beam... thanks for posting this up.

If you can run 12 injectors in an 11... that would be cool but would require the corresponding re-flash.
Any pics you can post up would be helpful.

I was told by Polaris Factory that a dealer is not allowed to re-flash an ECU outside of its model year.... and that the digital wrench program has measures built in to prevent this from happening... Now I guess that there is some way around this ... but I would imagine it would put the dealer license at risk.

I was surprised that the cost of the two injectors on the 2011 are only $130 for the pair with harness. Not bad IMO.


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[Ex-Flit]

I was told by my dealer (in MN) that I should replace my injectors ( 2011 pro) with the injectors for a 2012 because they are starting to see problems with the injectors not spraying correctly and that Carls Cycle is the only dealer that polaris approves to do the reflash. Not sure if this is true, but I have been dealing with this dealer for 30 years and I trust them.

 

[beamslayer]

I was led to believe that the 12 cylinders were different because of the different brand of injectors.(BOSH ). But was later corrected . I have installed 12 injectors in my 11 pro but used 12 ecu also . I borrowed them from a friends 12 that is blow up and waiting on Poo to make a decision .
It seems like the 12 injectors are not any better than the 11 as far as reliability IMO . I have heard the 12's run better thou .
There is a huge price different in the two $130 for 11 and $250 for Bosh but they both seem to have problems.
Ecu have the same part # but Polaris will not let you reflash a 11 to a 12 that is bull crap . So if you want to run the bosh you have to buy a 12 ecu . I also heard that someone has reflashed a 11 but that maybe hearsay .
One more thing I have learned is you can not bench test you sled or run it on a stand it has to be under load to work correctly . I have talked to half a doz shops trying to figure out my bog not one of them said you could not run it on a stand after I told them what I was doing .
After months of chasing ghost problems and changing parts I found out that the clutch I sent out to be rebuilt and balanced is worn out worse than when I sent it out . Hard to believe than less than 100 miles it looks like it does . I am waiting on him to come back from vacation or what ever to take that matter up.
I changed clutch and now my rpm are back but the bog is back along with the det issue.

 

[sled_guy]

12 injectors can be used in the 11, but the hole that they go in is a different depth. They will require a spacer to go under the little rubber washers for them to mount correctly. If you don't do this, you will likely see runability issues. And you have to use the '12 program.

I've been thinking about figuring out what the spacer thickness needs to be, but haven't explored the reflashing issue.

I was surprised to see the '12 injector price. If you buy a 900 kit from Carl's for an '11 they require you to buy the '12 injectors but they are only like $130 from them... maybe they are giving a deal because of the motor kit?

sled_guy

 

[beamslayer]

I was told nothing about a spacer when Chris informed me about running the 12's . I compared the two injector they seem to be the same length the only difference I could see is the green o-ring on the 12s where as the 11 did not require it --Maybe that is the spacer you are talking about ?
If mine requires injectors I am going to but the stock back in for now . I want to see if I can have my ecu reflashed for 12's before having to buy both .
Are there any hackers out there ?

 

[mountainhorse]

Checked into this a bit more.

ANY dealer can flash the ECU...if the sled is not a warranty item.

If you want to run the 12 injectors and flash in the 2011 PRO 800... you will need a brand new ECU with a "zero program" in it.... not able to re-flash a currently programmed 2011 with the 2012 flash... not physically possible.

and NO this is NOT an update from Polaris...

If you have a 2011 that needs warranty work on injectors... you will get the new UPDATED 2011 injectors and retain the 2011 flash. The updated replacement '11 injectors have proven themselves reliable in customers hands since released last year...

NOTE:
For those of you reading this that have your original injectors in your 2011 sled... there is probably nothing wrong with them. There were some faulty injectors out there but this is not the case "accross the board"... so don't stress out.


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[roppin]

What colour is it on the "new" 2011 injectors?

Can i go and hook up new injectors at my dealer now, even if i dont have any warranty left?

I have some really wierd bog and fuel problems, when i pin it it just bluuuuurp and dont hit full rpm and bogs alot..
Have checked all standard problems like tps, trottle switch(?), plugs, plug cables, exhaust ports, comp, and so on..

My dealers computer shows no codes. And starting to think maybe its a injector problem?
On the non ethanol plug it works 90% of the time, when changing to the low octane plug it just bogs and blurps all the time.
I can reach full rpm if i raise the rpm very slow.

So confused!!

 

[beamslayer]

I believe they are installing yellow injectors .
So if I buy a new ecu they can flash it to run the 12 injectors ? The price of a ecu is $375 and the injectors are $260 . How much to have the ecu flashed ?
I have heard from more than one source that the 11 have been having there fair share of injector problems. Hence the new 11 injectors and the bosh being brought back on line for 2012. I was also advised if I was going to keep my sled I should update to the 12's .
At this point and time I will not purchase another Polaris product . Skirts breaking, out of tolerance engine parts,belts breaking ,drive shafts, a arms, folding tunnels,worthless rear bumpers,faulty injectors,clutches breaking in half have I missed anything . Yes I know it is all internet hype there are thousand out there with no problems . Just try and get into a dealer to have any work done 1 to 2 week wait if the parts are not back ordered.

 

[mountainhorse]

2012 injectors are $260... + ECU of $380 + flash yes. About $720 plus tax

If you want to update anything (car, sled, bike etc) to a new model specification... you have to pay extra.

OR

The 2011 bolt-in Yellow Updated injectors for $130...Only necessary to flash your existing ECU IF... IF... you do not currently have yellow injectors in your sled. Dealers charge less than $60 for the reflash... many will do it for free if you buy the injectors from them... but not all. About $190 plus tax.

I have heard of zero problems with the updated 2011 yellow injectors... not one where another set was needed to be installed because the updated injectors that were installed did not function correctly.


Beam... what is it that you are trying to do??

Do you have running issues Currently with your 11 compared to other well-running 11's... or are you wanting to update your 2011 that runs like a 2011, to a newer model year specification to see if you get more "juice" out of it?


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[beamslayer]

You could say I am having running issues . I have been chasing problems since the rebuild and have been given mix answers on tech questions . It is at the dealer now I am tired of working on it . They did not have a clue either . But than again who would have expected a rebuilt clutch to be shot in less than 100 miles 'it looks way worse than when I sent it in for a balance and to tighten up the buttons in the rollers .
Now it goes in to det mode at mid range and when wfo it pulls hard than just fall on it face and comes right back .
If I wanted to wrench all the time I would have built a mod .

 

[TRS]

Make sure the injector with the green/wh wire is in the pto side. Have one in the shop right now, injectors are in the wrong hole.
Short leg of injector harness goes to mag side.

 

[beamslayer]

I have been lucky all the ones I worked on are tagged pto or mag.

 

[mountainhorse]

Beam... I feel for ya... for $130 and a couple of hours work... I think that the 2011 replacement/upgrade is your best option...

What color are your current injectors?

MH.





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[roppin]

I have blue injectors on my -11 Assault, can i go to the dealer and get them switched for yellow ones for free?

 

[wi.switchback]

i had the same issue with my '11 sba i had the blue injectors,switched them out to the yellow and had a reflash,i put over 500 hundred miles on the new setup and it pulls a lot better and zero bog issues with both the non eth. plug and the 10% plug.

 

[beamslayer]

I also have blue injectors . Still waiting on hearing from the dealer to see what he found out .
The owner was supposed to ride it on Saturday. It is nice when the owner shows concern that is rare these days . The guy is 67 yrs young and still races bikes and I heard he will hold his own on a sled .
I just hope we get it fixed after riding the pro it is hard to go back to the Dragon (The little 700)

 

[TurboMatt]

Can you see what color your injectors are with the sled fully put together? Just curious what I have. Is the whole injector blue or red or yellow or just part of it? I remember half heartedly looking the one day and they just looked black to me. But I could have been looking at them wrong.

 

[beamslayer]

It will tell you on a tag on the injectors by the color and it is also on the back side of the ecu.

 

[roppin]

Is it possible to see if the injectors fail in a "injector tester" ?

Or is it just under some sort of hard pressure like all bogging issues?