I am thinking of adding a cobra powerflo air box and cobra fi2000r fuel manger to my stock VN900 custom.
I find that aftermarket pipes are too loud for my liking. Stock pipe are fine but if I add the air box and fuel manager I want to get the bump in performance.
My Wild Ass Guess (based on nothing) is the new air box will provide about 25% more air flow. Assuming the stock mufflers are designed to provide best performance with stock set up I am guessing that I should look to increase the area of flow from the stock pipes by 25%.
If the stock pipe is 1" in diameter then the surface are is 0.785", If I did a stage 1 debaffle with 4 x 1/4'' holes the 4 holes would increase exhaust area by 25%.
I would like to minimize the size and numbers of holes in the debaffle process to minimize the increase in exhaust volume, but increase flow enough to take advantage of the new air box.
Thoughts, comments suggestions. Any idea how much more air flow the aftermarket air boxes provide??
I really don't know anything about fuel injection and relationship between intake and exhaust so my simple logic here may not be applicable.
As always thank for the input
I find that aftermarket pipes are too loud for my liking. Stock pipe are fine but if I add the air box and fuel manager I want to get the bump in performance.
My Wild Ass Guess (based on nothing) is the new air box will provide about 25% more air flow. Assuming the stock mufflers are designed to provide best performance with stock set up I am guessing that I should look to increase the area of flow from the stock pipes by 25%.
If the stock pipe is 1" in diameter then the surface are is 0.785", If I did a stage 1 debaffle with 4 x 1/4'' holes the 4 holes would increase exhaust area by 25%.
I would like to minimize the size and numbers of holes in the debaffle process to minimize the increase in exhaust volume, but increase flow enough to take advantage of the new air box.
Thoughts, comments suggestions. Any idea how much more air flow the aftermarket air boxes provide??
I really don't know anything about fuel injection and relationship between intake and exhaust so my simple logic here may not be applicable.
As always thank for the input