Removing the stock air cleaner?? help?
6th Gear
Joined: Dec 2008
Posts: 14
Likes: 0
From: Biloxi
new breather
You can do anything you want with the exhaust, and the air,but I would monitor the spark plug condition and header temp.to be on the safe side.
Last edited by 3dogsgulfcoast; Jan 31, 2009 at 08:25 AM. Reason: new information
Road Warrior
Joined: Dec 2008
Posts: 1,579
Likes: 0
From: N.C.
Now see i was told the compete opposite from the dealership.. They said as soon as i put my exhuast on i would need to get a PC or a new thingy from them.. But i was able to put my heavy breather on without any problems.. So i put the heavy breather on and had no problems even went on a 200 mile ride with no issues.. Last night i installed my new V&H and took it for a ride ( still without a PC) and it went perfect with no problems.. PC should be here today but who knows...
Elite HDF Member
Joined: Apr 2007
Posts: 4,919
Likes: 23
From: Seattle, WA
With '07 (or was it '06 ...) and later bikes, they have O2 sensor plugs on the exhaust headers that will adjust the amount of fuel to prevent it from running too lean (on the flip side, I don't think it will enrich it more that stock standards). This is referred to as closed loop fuel injection.
Therefore, it shouldn't run bad with A/C and exhaust changed out with aftermarket parts, as the O2 sensors will compensate for the differences in air flow.
If you want to improve the performance by enriching the air/fuel (A/F) mixture, then you'll need an aftermarket electronic fuel injection controller unit (or piggyback system) that will allow you to override the stock settings. (Stock settings are suboptimal due to the factory having to comply with EPA requirements.)
For the models made prior to the introduction of closed loop EFI, it would be true that changing stock A/C and pipes would cause problems with the A/F ratio.
R/
Priest
Therefore, it shouldn't run bad with A/C and exhaust changed out with aftermarket parts, as the O2 sensors will compensate for the differences in air flow.
If you want to improve the performance by enriching the air/fuel (A/F) mixture, then you'll need an aftermarket electronic fuel injection controller unit (or piggyback system) that will allow you to override the stock settings. (Stock settings are suboptimal due to the factory having to comply with EPA requirements.)
For the models made prior to the introduction of closed loop EFI, it would be true that changing stock A/C and pipes would cause problems with the A/F ratio.
R/
Priest
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