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Cruiser
Posts: 185
Rhode Island | Not sure which pipes I want yet, don't like the S1L1 or L2 haven't heard the D&D or the Big Suckers. In the mean time my dealer is telling me it is ok to install the Twin Suckers high performance air filters with the stock pipes and stock download. Does this sound right or is the bike going to run too lean? I know if I also change the pipes a download or fuel controller is needed to keep it from running too lean.
Thanks,
Jim |
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Cruiser
Posts: 256
| I have the twin suckers and stock exhaust. No issues. In fact, my bike ran rich so no it is a little better. |
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Cruiser
Posts: 156
dinwiddie, va | I disagree. These bikes tend to run lean, because of the closed loop fuel injection system that, as we all know, is controlled by the E.P.A. By adding more air flow to the equation would definitely cause a lean condition. The o2 sensors are narrow band and aren't capable of correcting that type of change. I love to read the plugs on all of the 2008 later Vic's, Even bikes with pipes and downloads still run on the lean side. The maps that Victory has to use is also controlled by the MAN. If you can pull your spark plug now and you don't see much soot on the plug, chances are, it's already on the lean side. I would wait for the tuner and exhaust, to do the filters. |
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Visionary
Posts: 1484
LaPorte,Tx. | The air entering the cylinders is controlled by the butterflies in the throttle bodies until the throttle is fully open not by the air filters. Then restriction is by how much air will pass through the throttle body bore or air filters. So by adding the second air filter, you get more air to the T/Bs under WFO throttle position, which gives you more hp if your throwing in more fuel along with the air. The stock map should throw enough fuel into the cylinder during normal riding. So under normal riding conditions, I doubt the twin sucker would have a harmful effect. I ran the Lloydz intake plate for ~10,000 miles prior to putting on the controller, no issues. Prior to Lloyd putting on the controller he ran a dyno pass and the motor was putting out 87 hp at the rear wheel. I don't remember the air/fuel mixture on that run, I don't think it was real lean though. After the controller was installed, bike ran 92hp, this was before the cams. |
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Cruiser
Posts: 185
Rhode Island | Thanks for all the input; I ran this by KevinX and he suggested disconnecting the O2 sensors.
Jim |
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Cruiser
Posts: 142
elgin mn | I am thinking about Ness twin suckers also, Could i install The Loydz intake plate also ? would like some input Stock exhaust on my 2008 thanks |
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Cruiser
Posts: 185
Rhode Island | It looks like it is one or the other.
Jim |
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Tourer
Posts: 537
, FL United States | yes one or the other |
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Ness Twin Suckers