124" winter build...
Road Master
Joined: Aug 2012
Posts: 854
Likes: 20
From: CT
Vdrop
that would depend on if you are running AFR'S between 14.3- 14.7 in the cruise area you would benefit from the narrow band sensors taking into consideration elevations changes, fuel, etc the ecm will fine tune the VE tables to maintain those set AFR values in that closed loop area. If running outside the closed loop in cruise area just eliminate the 02 sensors .
that would depend on if you are running AFR'S between 14.3- 14.7 in the cruise area you would benefit from the narrow band sensors taking into consideration elevations changes, fuel, etc the ecm will fine tune the VE tables to maintain those set AFR values in that closed loop area. If running outside the closed loop in cruise area just eliminate the 02 sensors .
Seasoned HDF Member
Joined: Dec 2010
Posts: 6,846
Likes: 1,386
From: Florida
Mine hates closed loop and it's only 95inch. I would say to run open loop why not? I look at it this way. On an evo or shovel if it was running anywhere near 14.4 you would have said that is extremely lean. So why do we want those conditions on a twincam? After all who gives a **** about fuel mileage. It ain't a Prius
Stellar HDF Member
Joined: May 2009
Posts: 2,066
Likes: 97
From: Northern VA
Forgive me but I thought with the TTS or other tuners you trick the bike into thinking it's around 14.6 but really it's down to 13 or so with the offset and the O2's act to keep it there.
Stellar HDF Member
Joined: Jan 2013
Posts: 2,464
Likes: 50
From: Rouses Point, N.Y.
That is what I thought but as Dan Thayer explained to me at cruising speeds there is no real load on the engine so why throw all that extra fuel into the cylinders its just washing the cylinders down for no purpose engine stays cleaner Dan tunes a lot of the big engines making big power and also tunes bikes that race on the salt flats setting records he has 124 cid engines making 145-150 hp getting around 50 mpg on the interstate at cruising speeds so I left my as he tuned it in the cruise area
HDF Community Team
Joined: Jun 2008
Posts: 4,756
Likes: 951
From: Out West
Are you kidding me, well that sucks! How did you determine, compression check, anything else?
Well, take some pics man if you can
Well, take some pics man if you can
Seasoned HDF Member
Joined: Jan 2015
Posts: 15,944
Likes: 7,037
From: Sandy Eggo's North County
Now, what you say about getting the octane you paid for, you do have a point. I used to go to stations and wait for a BMW or Merc driver to fuel with premium, only to find out they usually put regular too!
Be sure to use "Tier one" fuels, everyone!
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Road Master
Joined: Aug 2012
Posts: 854
Likes: 20
From: CT
I torque them per cometic's instructions, but I go through the final torque repeatedly til they seem to stop moving. It had MLS on it? Is it actually blown?
Thread Starter
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Road Warrior
Joined: May 2010
Posts: 1,718
Likes: 15
From: Bay area, CA
It was hard to see since the oil is still pretty clear but there's a small amount of oil on the backside of the rear jug. Makes perfect sense now, it stopped making the noise when it heated up because the cylinder expanded enough to seal back up. I'll take some pics when I have it apart. I'm excited to pull the tank again, I love smelling like gas haha