"Pings" @ Elevation
Tourer
Joined: Apr 2007
Posts: 266
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From: Georgia
RE: "Pings" @ Elevation
General comment, thinner air makes for richer fuel to airmixtures. Richer mixtures usually means less chance for ping. I did not know there was anybarometric pressure sensors on HD's that might control spark timing. Just some comments, no expert at my house.
Road Captain
Joined: Mar 2006
Posts: 528
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From:
RE: "Pings" @ Elevation
It's my understanding that the Delphi EFI system used on the HD twin cam engines has a barometric pressure adjustment based on the perceived altitude that the ECM thinks the bike is operating at. The ECM assumes that fewer air molecules (less dense air) will be flowing into the intake at high altitudes and makes an adjustment to further retard the engine timing. I have heard stories of guys having so little horsepower at high altitude on a stock TC96 that the bike will hardly make it up a 7-8% grade.
Grand HDF Member
Joined: Feb 2005
Posts: 4,305
Likes: 9,419
From: Twin Cities Minnesota
RE: "Pings" @ Elevation
It's LEAN [:@], if you can't get dealer to resolve [&:], buy a Power Commander 
, if you are not planning any other mods. That way you will be able to richen it up to run better. If you are planning mods buy the S.E. Race Tuner and get it dialed in on the dyno.
, if you are not planning any other mods. That way you will be able to richen it up to run better. If you are planning mods buy the S.E. Race Tuner and get it dialed in on the dyno.
Stage I
Joined: Sep 2007
Posts: 1
Likes: 0
RE: "Pings" @ Elevation
My 07 FLHT pinged all the time and the dealer said only way they could fix it was with a SERT . the day I took it in they said I was in luck as the "factory guy" was there and he downloaded something for free. Now my bike runs great and I can't make it ping. Dealer is Sierra Vista, Az.
Seasoned HDF Member
Joined: Oct 2006
Posts: 5,977
Likes: 85
From: Nevada
RE: "Pings" @ Elevation
ORIGINAL: ndotken
It's my understanding that the Delphi EFI system used on the HD twin cam engines has a barometric pressure adjustment based on the perceived altitude that the ECM thinks the bike is operating at. The ECM assumes that fewer air molecules (less dense air) will be flowing into the intake at high altitudes and makes an adjustment to further retard the engine timing. I have heard stories of guys having so little horsepower at high altitude on a stock TC96 that the bike will hardly make it up a 7-8% grade.
It's my understanding that the Delphi EFI system used on the HD twin cam engines has a barometric pressure adjustment based on the perceived altitude that the ECM thinks the bike is operating at. The ECM assumes that fewer air molecules (less dense air) will be flowing into the intake at high altitudes and makes an adjustment to further retard the engine timing. I have heard stories of guys having so little horsepower at high altitude on a stock TC96 that the bike will hardly make it up a 7-8% grade.
Now have PC111 and have been higher with no issues.
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Tourer
Joined: Feb 2007
Posts: 382
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From: Long Beach, Ca.
RE: "Pings" @ Elevation
ORIGINAL: continentaldrifter
At what RPM does the pinging start?
At what RPM does the pinging start?
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pigpipes
Ignition/Tuner/ECM/Fuel Injection
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Sep 4, 2013 10:03 AM
