PCV with 2 maps AGAIN
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
I'm amazed at how many PCV owners aren't using this feature. I think it is an important function that most users overlook or perhaps don't even know about.
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Road Captain
Joined: May 2007
Posts: 674
Likes: 0
From: Vancouver Island
As I understand this, you would run a second, leaner map for long distance cruise situations to increase fuel mileage. Is there any other reason to do this? I have my new PCV on the way from Jamie so this is interesting.
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
I use my leaner map about 99% of the time, switching to the second richer map only when it is very hot outside and I know I'm going to be in slow stop-and-go traffic. For me it isn't needed at all in cooler weather, like 80° or less. OTOH if you don't have an oil cooler installed you would probably use it much more often. I think the two go hand-in-hand for a complete solution to cooling issues. That said, there are times in summer when my oil temp hits 230° and EITMS (heat mgt.) kicks in, as oil temperature stays reasonable on the road moving at 45mph or more.
Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
It allows the engine to rev to 6250 rpms instead of the previous factory limit (5200 or whatever). I almost never go past 4500 rpms, so the benefit for me is nil.
Road Master
Joined: Jul 2007
Posts: 894
Likes: 1
From: Huntersville, NC
I am getting a PCV soon as well and wanted to do 2 maps, 1 really lean and hot for millage and one really rich and cool for power and traffic. Reading through this thread makes me wonder if there is a way for a third map? One in-between both of these that could be used on long trips but in the middle of a hot summer. I know you could get a rocker switch and have 3 positions, forward (1), middle (2), and back (3). But can the PCV do that? I doubt it but just thought I would ask. I guess in this situation on a hot day on a long interstate trip you could just flip it to the richer map for a while and then back to the lean map for milage.
Road Master
Joined: Jan 2006
Posts: 815
Likes: 50
From: Grand Rapids, MI.
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Extreme HDF Member
Joined: Sep 2005
Posts: 11,615
Likes: 50
From: Baton Rouge, LA
I know you could get a rocker switch and have 3 positions, forward (1), middle (2), and back (3). But can the PCV do that?
Tourer
Joined: Jun 2007
Posts: 279
Likes: 3
From: N. Alabama
I am getting a PCV soon as well and wanted to do 2 maps, 1 really lean and hot for millage and one really rich and cool for power and traffic. Reading through this thread makes me wonder if there is a way for a third map? One in-between both of these that could be used on long trips but in the middle of a hot summer. I know you could get a rocker switch and have 3 positions, forward (1), middle (2), and back (3). But can the PCV do that? I doubt it but just thought I would ask. I guess in this situation on a hot day on a long interstate trip you could just flip it to the richer map for a while and then back to the lean map for milage.