efi idle screw!
Seasoned HDF Member
Joined: Jul 2008
Posts: 9,281
Likes: 1,139
From: southeast PA
Welcome to the world of technology. To change the idle you have to get a dealer to do it with their computer, or install a tuner (unless there already is one on the bike) and do it yourself. If your bike is at the dealer for service they shouldn't charge much, many will do it for free.
Road Master
Joined: Feb 2008
Posts: 1,199
Likes: 1
From: Nude Hampster....
If your metric that you are referring to is your 1998 YZF600 it's not EFI , it's carbureted with CVKD36 Keihins..
As far as why you'd want to (on a race bike anyway), setting your idle really high helps rear wheel hop and front end chatter when hard on the binders setting up for a corner... it helps the engine maintain RPM when clutching and downshifting and makes RPM matching easier...
and therefore faster lap times dude !
As far as why you'd want to (on a race bike anyway), setting your idle really high helps rear wheel hop and front end chatter when hard on the binders setting up for a corner... it helps the engine maintain RPM when clutching and downshifting and makes RPM matching easier...
and therefore faster lap times dude !
Outstanding HDF Member
Joined: Aug 2009
Posts: 2,938
Likes: 4
From: NC
I dialed in some extra fuel on my 06 88incher with my Fuelpak to knock down the idle a bit. Sounds good now and more importantly idles cooler with the added fuel. Many tuners allow idle speed adjustment. However I have never been a fan of the almost stalling idle speed the carbed guys think is cool. The oil pump isnt pushing any oil to the engine like that.
Outstanding HDF Member
Joined: Apr 2005
Posts: 2,106
Likes: 12
From: SoCal
Some of the HD FI bikes (the old M&M bikes in particular) have screw adjustments in the throttlebody. On other bikes they are hidden by a plug behind the face plate. Having explained that, DON'T try and adjust it like a carb. All that does is mess up the ECM and it may throw other settings out of whack. So if you want to play with the idle you need to get the tuning software and adjust it via a computer.
At least that's my experience.
At least that's my experience.
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Stellar HDF Member
Joined: Oct 2007
Posts: 2,806
Likes: 1,754
From: New Bern NC
Some of the HD FI bikes (the old M&M bikes in particular) have screw adjustments in the throttlebody. On other bikes they are hidden by a plug behind the face plate. Having explained that, DON'T try and adjust it like a carb. All that does is mess up the ECM and it may throw other settings out of whack. So if you want to play with the idle you need to get the tuning software and adjust it via a computer.
At least that's my experience.
At least that's my experience.
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Outstanding HDF Member
Joined: Aug 2009
Posts: 2,729
Likes: 7
From: Republic of Texas
Here we go again. Someone hears a few people say "you'll kill your engine with a low idle speed" and now they preach it to everyone else. If you don't let your bike idle for 15, 20 or 30 minutes at a time it doesn't make a ****. I guess that's why before fuel injection came out and most people had their bikes idling at around 5 to 600 rpm the engine would seize up if you let it idle for 5 minutes and all of the engines needed a rebuild after 1000 miles. Come on now. Good grief. The only major draw back to a very low idle is the load that is applied to the rod and crank bearings because of the slow revolutions.