A noob question
Road Warrior
Joined: Jul 2007
Posts: 1,898
Likes: 67
From: Saint Amant, Acadiana
Not really. Better airflow helps in high RPM range when cylinder fill rate drops because intake valve is not open for long enough. Since stock Sporty runs in open loop mode when more power is needed it won't get the optimal mixture to take advantage of better air filter.
Road Warrior
Joined: Jul 2007
Posts: 1,898
Likes: 67
From: Saint Amant, Acadiana
K&N is reusable and flows better even when used for a while.
It will not give you more HP, not on an EFI bike.
For performance you should do intake and exhaust and fuel remapping, all same time.
It will not give you more HP, not on an EFI bike.
For performance you should do intake and exhaust and fuel remapping, all same time.
Grand HDF Member
Joined: Jul 2007
Posts: 4,007
Likes: 126
From: Manassas, VA
I don't know anything about them, but a lot of people are running the Xied's to get the air/fuel mixture back to about 13:1. After a quick search, I came up with this recent thread:
https://www.hdforums.com/forum/sport...9753-xied.html
Ask around. They seem to work very well for about 100 bucks. You'll need an exhaust, full or slip-on mufflers, that will get the spent gasses out better. More air in, you need more air out - and the correct air to fuel ratio.
Figure Machine is an awesome company. Any of their air cleaners, like the XL Flow Stage 2 you mentioned, will flow more than enough air.
https://www.hdforums.com/forum/sport...9753-xied.html
Ask around. They seem to work very well for about 100 bucks. You'll need an exhaust, full or slip-on mufflers, that will get the spent gasses out better. More air in, you need more air out - and the correct air to fuel ratio.
Figure Machine is an awesome company. Any of their air cleaners, like the XL Flow Stage 2 you mentioned, will flow more than enough air.
Last edited by HarleyScuba; Jul 4, 2012 at 10:27 AM. Reason: nunya
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Road Warrior
Joined: Jul 2007
Posts: 1,898
Likes: 67
From: Saint Amant, Acadiana
Nothing you do with stock ECM and O2 sensors (Xied, eliminators, whatever) will affect the mixture in open loop mode.
So the answer to your question - do I get more HP by just replacing the air filter - is still NO.
So the answer to your question - do I get more HP by just replacing the air filter - is still NO.
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