Mpi fuel help

Blue25

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Joined
Apr 28, 2008
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Location
Barrie, ontario
Country
Canada
Snowmobile
07 apex mpi
Hey all, my apex is currently running 12lbs out of its mpi supercharger. I ride flatland about 1000ft. I'm planning on flipping the pullies and bringing it back to around 6lbs of boost, since I find it slightly undrivable in the bush.
It has a pure logic fuel box and I'm wondering if someone could give me a baseline to set the fuel for 6lbs. I see info out there about the gems controller. I'm just not sure if that Info is similar or completely different from the pure logic program.
 
If it was running good at 12lbs and you go to 6lbs you shouldn't have to do anything. That is the point on the controller to sense how much boost and add fuel per pound of boost. I would try it before making any changes. That is if you are still at the same altitude that you were running 12lbs.
 
Thanks for your reply. I ended up testing it on my own and found just that. Other than some mild tuning on bottom end it was all the same. Thanks again.
 


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