for steve cole and other gurus
#1
05-13-2018, 06:25 PM
#2
05-13-2018, 06:49 PM
Seasoned HDF Member
#3
05-13-2018, 07:07 PM
Seasoned HDF Member
under the impression its benefit is twfold, rider comfort by cutting off the rear cylinder injector, to do what? reduce heat from the engine and head pipe when at a stop..so naturally that means the rear cylinder/exhaust and overall ET shouldn't be as high as when EITMS is not enabled right?
#4
05-13-2018, 07:34 PM
under the impression its benefit is twfold, rider comfort by cutting off the rear cylinder injector, to do what? reduce heat from the engine and head pipe when at a stop..so naturally that means the rear cylinder/exhaust and overall ET shouldn't be as high as when EITMS is not enabled right?
#5
05-13-2018, 07:38 PM
Seasoned HDF Member
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Tony P (05-16-2018)
#6
05-13-2018, 07:46 PM
HD EFI Guru
EITMS is ONLY for rider comfort. By turning the rear cylinder off, less heat is made closer to the rider and it's mainly due to heat coming from the rear cylinder exhaust pipe. Remember this only works at or near idle with basically no vehicle speed. As soon at the engine is rev'ed above 1250 RPM or vehicle speed is above 2 KPH it turns the feature OFF. So when you let the clutch out it basically is back to normal operation.
#7
05-13-2018, 08:07 PM
Grand HDF Member
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#8
05-13-2018, 08:21 PM
Seasoned HDF Member
Once the motor has come to temperature, you’d have to be stopped for a very long time with EITMS engaged to be able the measure a temperature reduction. Conversely, if you started two identical Harley’s with EITMS enabled on one, and disabled on the other...and let them run at idle...the EITMS one would likely come to temperature slower. But, this isn’t how the bikes are ridden.
No it’s no marketing hype. Why would they market a feature that reduces your *** temperature, compared to other bikes?
No it’s no marketing hype. Why would they market a feature that reduces your *** temperature, compared to other bikes?
#9
05-13-2018, 08:26 PM
HD EFI Guru
Sure, but remember all the metal in the engine does not just drop heat right away and on top of that the heat from the Front cylinder gets pulled to the rear as the metal tries to cool. Then on the M8's the cooling systems runs the hot oil or water to the rear cylinder as well. All in all most of what a rider feels at idle stopped is heat off the exhaust pipes and that is where the big gain comes from with EITMS as there just is not enough time spent to really get the engine itself to cool much of any. Now if there were fans blowing air across the cylinders that would help cool the engine itself. These reasons are just why it's just a rider comfort deal.
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#10
05-13-2018, 08:35 PM
Stellar HDF Member
Warm to hot day. EITMS off.
Shorts to ride with. Passenger too would be worth testing.
Run the bike down the freeway at speed for 10-15 miles.
Find a place to pull over where you can safely come to a stop for a while.
Take close note as to where the heat is coming from and how intense it becomes after a while of sitting with the engine running in neutral.
Once you feel comfortable you have a good feeling for the heat with both cylinders running...Now turn EITMS on.
Take the bike for the same ride for 10+ miles to be sure the engine and exhaust, etc has had time to normalize temps based on your actual riding conditions.
Now come to a stop and put it in neutral with the clutch out and wait for a bit and the EITMS should go “ACTIVE” on your info screen.
Once you have had the same amount time exposed to the bike running on only the front cylinder you should not feel the same level of heat over the same time with both cylinders running....
Bob
Last edited by FLTRI17; 05-13-2018 at 08:42 PM.