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2009 750fi, Has Muzzy dual exhaust Muzzy digi tune, and k&n air cleaner. A Shop told me that the its not getting enough fuel for the amount of air it's sucking in. Has good fuel pressure 45psi, comp. is 65psi both cyl. and vavles in spec. There telling me to put stock air cleaner assembly back on and it will run fine. Is this true? any suggestions?
 

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Doug, yes I understand that, but the shop says it's getting too much air for the amount of fuel. (going lean ). Even with fuel controller.(digi tune). They say putting the stock air filter assem. back on that will fix it. I don't know if this will work.
 

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I second the MSD. Make sure you buy it from a site sponsor and they will give you a fuel map for a stock engine with muzzy pipes, or at least get the instructions for the digitune and get it working properly. Maybe call muzzy and ask them for some pointers in the use and setup of their product.
 
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