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Discussion Starter · #1 ·
Well we shoe horned the Commander up onto the dyno and got it all strapped down. Going in to do some base pulls with the stock exhaust right now.
 

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Well we shoe horned the Commander up onto the dyno and got it all strapped down. Going in to do some base pulls with the stock exhaust right now.
Did you have any trouble getting the Commander to "think" it was being driven
when in fact just the rear wheels are turning with the fronts stationary on the dyno?....Lance
 

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Discussion Starter · #6 ·
Cant get to the charts as of this moment because the IT guys have already shut down the server for the weekend. What I can tell you is that it put down 51 HP in all stock trim. With the slip on exhaust it put down 53 HP and change without tuning. The duals sound amazing! No performance data for that setup yet :furious: We should have the ability to tune Monday afternoon. Have a great weekend guys.
Also it would cut power momentarily if we tried to start the dyno pull under 18 MPH. Not sure if this is part of the supposed "break in period".
 

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Cant get to the charts as of this moment because the IT guys have already shut down the server for the weekend. What I can tell you is that it put down 51 HP in all stock trim. With the slip on exhaust it put down 53 HP and change without tuning. The duals sound amazing! No performance data for that setup yet :furious: We should have the ability to tune Monday afternoon. Have a great weekend guys.
Also it would cut power momentarily if we tried to start the dyno pull under 18 MPH. Not sure if this is part of the supposed "break in period".
Mike - next week could you do 2 quick identical pulls...1 in regular mode and the other in sport mode?....you may be able to unlock some mysteries on the machine losing power in corners that some drivers have reported......and it may make sense to other complaints that have been surfacing as well, such as your 18 MPH issue....

Reason for my request:

...if the machine was driving straight forward at 30 MPH, the ECU is a happy camper - all is good in the world - happy, happy, happy

...if the machine is pitched into a slide at 30 MPH and the front wheels virtually come to a stop, but yet the driver is flooring the loud pedal to swing the arse-end around, after a momentary delay, the ECU may be programed to cut power, as in an ABORT situation......

I believe it has front-wheel speed sensors, correct?... if it does, the ECU could see the front wheels spinning at 10 MPH, but us bozos driving it have the driven-by-wire pedal floored for 70+ MPH....BRP engineers may have built in a safety factor into the ECU, such as a few have already suspected, and if you found that the 2 identical dyno runs "differed" because of the sport mode switch, it may help trying to figure out the ECU better....purely speculation on my part tho......thanx....Lance
 

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Discussion Starter · #10 ·
Just a quick update guys. We are trying to get some answers from a Can Am dealer and BRP Corporate on the issue our machine is having. If anyone has a contact at BRP that you think may have some answers please let us know. Its pretty much like pulling teeth trying to get this thing figured out. We did dyno pulls with both keys, sport mode on and off, seat belts buckled. There is no combination that we have figured out to correct the problem.

Also there are no individual wheel speed sensors on the front wheels. There may be a speed sensor in the front diff, but nothing that jumped out at us.

I have decided not to post any dyno charts for our new systems until we have a solid machine that we know is right.

On a positive note, we are probably about 3-4 weeks out on release of the dual system. The slip on setups MAY be available a bit sooner.

Well keep you all in the loop.
 

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Just a quick update guys. We are trying to get some answers from a Can Am dealer and BRP Corporate on the issue our machine is having. If anyone has a contact at BRP that you think may have some answers please let us know. Its pretty much like pulling teeth trying to get this thing figured out. We did dyno pulls with both keys, sport mode on and off, seat belts buckled. There is no combination that we have figured out to correct the problem.

Also there are no individual wheel speed sensors on the front wheels. There may be a speed sensor in the front diff, but nothing that jumped out at us.

I have decided not to post any dyno charts for our new systems until we have a solid machine that we know is right.

On a positive note, we are probably about 3-4 weeks out on release of the dual system. The slip on setups MAY be available a bit sooner.

Well keep you all in the loop.
It was reported to me from one dyno tuner that possibly the Commander ECU can figure out the rear wheels are spinning but the fronts are stationary,,,,and the ECU doesn't like that combination along with throttle position, engine RPM and who knows what else enters into the ECM sum of all the sensors......

They apparently had to "jump" a front sensor wire into a back sensor wire....sounded to me like as the voltage signal from the rear wheels spinning up, the ECU is reading that.....by temporarily piggybacking this mysterious front sensor into the rear sensor, it gives the ECU input that the front wheel speed is the same as rear, even tho it's not.....so the ECU unleashes the Commander's full potential.....just a quess/hunch from the way it was described........hope this helps.........Lance
 

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Discussion Starter · #13 ·
Thanks Lance. Ill look into doing that before we put it back up onto the dyno. We were finally able to get BUDS hooked up. Got the maintenance due message cleared. Which apparently comes on upon initial startup for every machine and is simply cleared by the dealer before hitting the showroom. Were still going to log 10 hours on it before we do our final tuning just in case of the supposed 10 hour break in period. Our engine runs awful rich and if it leans out after ten hours it will throw our fuel maps out of whack.
 
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