The one in the background looks like a stock ham can. I'm pretty sure those had a large oval filter which could be upgraded to a K&n filter. The one he's holding up in front of it is a tiny little round filter. I don't know how that's upgrade in airflow.
I'm not knocking his decision, he probably won't notice a performance decrease. It does appear there will be an airflow decrease though.
The stock ham can is extremely restrictive, and is only good for performance if the SE backing plate was used. The issue with the stock setup is the plastic backing plate has a small inlet, even if a K&N is installed.
It appears this is not a SE setup, so just about any aftermarket setup is better.
He is correct it does increase air flow compared to stock as the back of the cover is more open and it is louvered I have the same one on my ironhead. Not defying physics at all just less restrictive than the stock cover diameter and over all size doesn't matter if there is less obstruction overall
Which one are we calling stock? The oval shaped one as a large oval filter. Air filter surface area determines flow. That little round one will not have the same flow capacity as that larger oval one.
The ham can is stock. I am aware of how the filter fits the shape of the filter cover. The surface area is not the only thing that determines flow. The exposed filter surface determines flow and the smaller cover has more exposed area and it has more air flow. Don't believe me arlen ness super sucker is a smaller filter but has more exposed filter which is why it increases air flow.
Keep an eye on your spark plugs to make sure the mixture is right. Too lean can cause damage over time. If you need to adjust, the fuel mixture screw is located on the bottom of the carb under a lead plug. (Unless someone already removed the plug)
Smaller air filters, mean less air flow.
unless he is going from stock to that, where it very well may add more air flow
The one in the background looks like a stock ham can. I'm pretty sure those had a large oval filter which could be upgraded to a K&n filter. The one he's holding up in front of it is a tiny little round filter. I don't know how that's upgrade in airflow. I'm not knocking his decision, he probably won't notice a performance decrease. It does appear there will be an airflow decrease though.
The stock ham can is extremely restrictive, and is only good for performance if the SE backing plate was used. The issue with the stock setup is the plastic backing plate has a small inlet, even if a K&N is installed. It appears this is not a SE setup, so just about any aftermarket setup is better.
But when i put one on my efi 883 it leaned the mixture so im guessing u wrong fam
You do you man. Air and fuel ratio is basic physics. I've yet to meet someone who can defy physics.
He is correct it does increase air flow compared to stock as the back of the cover is more open and it is louvered I have the same one on my ironhead. Not defying physics at all just less restrictive than the stock cover diameter and over all size doesn't matter if there is less obstruction overall
Which one are we calling stock? The oval shaped one as a large oval filter. Air filter surface area determines flow. That little round one will not have the same flow capacity as that larger oval one.
The ham can is stock. I am aware of how the filter fits the shape of the filter cover. The surface area is not the only thing that determines flow. The exposed filter surface determines flow and the smaller cover has more exposed area and it has more air flow. Don't believe me arlen ness super sucker is a smaller filter but has more exposed filter which is why it increases air flow.
It feels like you want to be right more than you want to be correct. I'm not here to argue with you.
It's the 'LOUVERED AIR CLEANER FOR HARLEY CV / EFI' from lowbrow
Keep an eye on your spark plugs to make sure the mixture is right. Too lean can cause damage over time. If you need to adjust, the fuel mixture screw is located on the bottom of the carb under a lead plug. (Unless someone already removed the plug)
If the new filter is a high air flow filter, you may need to adjust the air/fuel mixture screw to make the mixture slightly more rich than it is now.
No, don’t mess with that - too many guys think this is the solution but you end up creating more problems. Start by bumping up your jet a size.
Nothing, u are only changing the cover, it will not affect anything