"Pings" @ Elevation
Tourer
Joined: Apr 2007
Posts: 266
Likes: 0
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
Likes: 0
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: 4,307
Likes: 9,428
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.
Thread Starter
|
Tourer
Joined: Feb 2007
Posts: 382
Likes: 0
From: Long Beach, Ca.
RE: "Pings" @ Elevation
ORIGINAL: continentaldrifter
At what RPM does the pinging start?
At what RPM does the pinging start?
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Thread
Thread Starter
Forum
Replies
Last Post
pigpipes
Ignition/Tuner/ECM/Fuel Injection
0
Sep 4, 2013 10:03 AM
