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Discussion Starter · #1 ·
I just put a PVC with auto tune on my bike. Just wondering if anyone knows the ideal air/fuel ratio and what rpm range is the powerband thanks
 

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Welcome to the board!:med:
 

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PVC? PCV?

Sean
 

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^ i was thinking the same thing.
 

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14:1 is the ideal A/F mixture ratio. and peak HP on the 850 HO is at 6750-6850 RPM
14 to 1 is very lean. I have not been on a dyno with mine yet but I never heard of anyone going that lean unless its for a short burst on drag strip or mud racing.

I run between 12.8 to 13.1 depending on RPM range.
 

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Stoichiometric=most IDEAL A/F @14.7:1

15.0:1 = Lean
14.7:1 = Stoichiometric
13.0:1 = Rich
 

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Discussion Starter · #10 ·
Ya OK sorry for the misspelled forum. When I got my bike back I think my air/fuel is 13.4 just wasn't sure what its was suppose to be running at.
 
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