exhaust popping

[swiss6]

having problems with popping/backfire when letting off throttle from full throttle.dmc duals/prowflow/pc3.got map from krandalls.

[Krandall]

Pull your plug just to verify that it's running rich and I can help you out.

[Colorado700R]

is your airbox lid on?  If so take it off and try it.


Aaron

[swiss6]

yes airbox is off

[DL700]

say it, SAY IT, say UNCLE :grin_nod:

[DL700]

let me see if i can figure out how to attach a file.....




try these changes...should take care of your popping problems....unless u have an exhaust air leak

0   0   0   0   0   0   0   0   0
0   0   0   0   0   0   0   0   0
0   0   0   0   0   0   0   0   0
0   0   0   0   0   0   0   0   0
14   7   8   2   0   0   0   0   0
14   16   7   7   0   -7   -4   -4   0
12   16   19   14   -6   -4   -4   -5   -5
0   4   13   -9   -3   8   9   -2   5
0   6   11   -5   -16   -1   -4   -11   -3
0   4   8   -5   -2   14   9   0   0
0   10   10   12   1   20   16   35   27
0   10   17   13   10   24   15   25   32
0   10   21   7   15   28   23   14   14
0   10   17   18   17   24   28   23   23
0   10   18   19   13   14   15   13   18
0   0   14   9   8   11   11   11   18
0   0   10   9   5   10   9   10   30
0   0   0   10   5   8   8   11   34
0   0   0   8   7   8   8   11   34
0   0   0   8   5   6   8   11   34
0   0   0   7   9   8   10   11   32
0   4   0   9   9   8   8   11   30
0   0   0   5   11   8   8   11   32
0   0   0   5   10   8   10   11   32
0   0   0   5   10   8   10   11   26
0   0   0   5   10   6   8   9   28
0   0   0   5   9   6   8   9   33
0   0   0   5   7   4   5   9   31
0   0   0   0   7   2   3   8   31
0   0   0   0   7   2   2   8   31
0   0   0   0   7   0   0   6   31
0   0   0   0   7   1   1   2   31
0   0   0   0   7   3   3   2   31
0   0   0   0   7   2   2   2   31
0   0   0   0   7   2   3   2   31
0   0   0   0   0   0   0   0   0
0   0   0   0   0   0   0   0   0

[air]

Going to go against the flow here and say you are lean in the mid-upper rpms at 0-2 percent throttle.  add some fuel there. Or as was stated you might have an exhaust pulling air in.

[swiss6]

dl700 was spot on.too much fuel at 0 throttle above idle.corrected map as suggested.bike runs hard and smooth.go through rpms real quick. thanks for the help dl700.this forum is awsome.

[DL700]

cool beans.....    there are a lot of maps out there with the same problem....some from fuelmoto too

[Danny T]

nice work dl 700.  which you were close to Mi so i could have you dyno me.