decell popping
Grand HDF Member
Joined: Oct 2009
Posts: 3,824
Likes: 603
From: Myrtle Beach SC
It usually does take a good tuner to get the decell popping out of a build. The PCV runs open loop 100% so it should be tuned to get the best results out of it. You can make some corrections yourself but I'd get it to a dyno tuner first chance. An exhaust leak at the head usually has a ticking noise with it. At the pipes, you can usually see a build up of carbon if you run your finger over the joints.
Road Warrior
Joined: Nov 2008
Posts: 1,955
Likes: 7
From: The Great Northwest
Don't know if this image will be large enough to read, but the decel popping is a fairly easy fix if you have a PCV and have already ruled out any exhaust leaks. I found that the solution in almost every case is to add a bit of fuel in both tables of the zero percent column from 2000 rpm up to redline. You can even leave the usb cable hanging free so you can take some test rides as you make the adjustments
Note: Once you hook up the laptop, make sure to save your current map so you can always get back to where you started.
Note: Once you hook up the laptop, make sure to save your current map so you can always get back to where you started.
Road Warrior
Joined: Jun 2008
Posts: 1,759
Likes: 1
From: Breaux Bridge, LA
Don't know if this image will be large enough to read, but the decel popping is a fairly easy fix if you have a PCV and have already ruled out any exhaust leaks. I found that the solution in almost every case is to add a bit of fuel in both tables of the zero percent column from 2000 rpm up to redline. You can even leave the usb cable hanging free so you can take some test rides as you make the adjustments
Note: Once you hook up the laptop, make sure to save your current map so you can always get back to where you started.
Note: Once you hook up the laptop, make sure to save your current map so you can always get back to where you started.
Grand HDF Member
Joined: Jun 2007
Posts: 4,598
Likes: 421
From: Lansing mi
I got my mapped PCV from FM and I have the megaphones to. I had the same problem, I called FM and Keith told me how to change the table from 0 to 15 and that did help. He said if I need more do it in sets of 5's. I'm up to 20 now but I need a bit more. Keith said if I get to 30 let him know and he will send me a new map. I really don't want a new map because my King runs great and my fuel mileage is decent.
Jammie sent me a e-mail and said the megaphones are one of the mufflers that is a little harder to get the pop out, but it can be done.
Jammie sent me a e-mail and said the megaphones are one of the mufflers that is a little harder to get the pop out, but it can be done.
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