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[mcdonaldroadcapt]

Have a 2008 110 with Rineharts, cone SE Air Cleaner and SERK.  Maybe I forgot from last summer but on an 85 degree day in heavy traffic, in about three traffic lights my rear cylinder does its thing.  I don't think that it came on that quickly last year.  Can you guys chime in and tell me about when and under what conditions your rear cylinder pumps air?  Outside of this my bike is super fast and has no other problems.

Thanks for your input.

Jim McDonald
Canton Ga

[ultrafxr]

As best I recall when it reaches some pre-determined temp (I don't know what that is) it shuts down the rear cylinder.  But you must be stopped and have the throttle closed.  Movement of the bike or the throttle will turn it back on.  I think on your bike you can 'toggle' the system to be active or inactive my closing the throttle beyone the normal stop point.  

[CVORick]

It only cuts out the rear cylinder if you have it "activated" to do so, at least on the '09.  You can have it turned off on the '08 if you desire or IMHO get rid of the SERT and install TTS to help manage the heat (Air/Fuel Ratio) and keep it from running so lean.  You won't be disappointed.

[wreckman 42]

TTS Mastertune, got the cat out and installed Fullsac baffles. Mine runs fine with the rear cylinder cut-out coming on rarely.

[slamr]

Your manual should outline all the details of the EMTIS or just search the net.  I believe the following pertains to 08 bikes:

ETIMS STANDS FOR
ENGINE TEMPERATURE IDLE MANAGEMENT SYSTEM

Vehicles delivered from the factory with ETIMS disabled ETIMS can be enabled or disabled by the rider by using the following procedure.

1. TURN THE IGNITION SWITCH TO THE ON POSITION ( DO NOT START THE ENGINE.)

2. PUSH THE THROTTLE TO ROLL-OFF POSITION AND HOLD.

3. AFTER APPROXIMATELY 3 SECONDS, THE CRUISE INDICATOR LAMP WILL EITHER FLASH GREEN (ETIMS ENABLED) (OR RED ETIMS DISABLED).

4. REPEAT THE PROCEDURE AS NEEDED TO ENABLE OR DISABLE ETIMS.


THIS IS ONLY ON 08's with build date 12/03/07 and later. Bikes built after this date were shipped from the factory with the new calibration with the twist grip roll off selection for ETIMS

This is the same download that the 07s got from the dealer (ONE TIME FREE DOWNLOAD) to cool the rear cylinder down at idle only.

But now you can turn it on and off when you want to. Not all 08s have this. Only start date of 12-07 until now.

I do not know if all Harleys do this or just the baggers.


System Function
When engine temperature reaches a pre-determined point, the EITMS will turn off the rear cylinder fuel injector. Idle speed will be maintained, however the rear cylinder will become an “air pump” which will work to cool the engine. EITMS will activate (rear cylinder will turn off) when all of the following conditions are met for approximately 6 seconds.
• Engine temperature is greater than 287° F domestic (165° C international)
• Twist grip opening less than 2.0%
• Vehicle speed under 1 MPH (2 KPH)
• Engine speed under 1200 RPM EITMS will disable (rear cylinder will again fire) if any one of the following occurs:
• Engine temperature falls below 275° F domestic (135° C international)
• Twist grip opening greater than 2.3%
• Vehicle speed exceeds 2 MPH (3 KPH)
• Engine speed exceeds 1350 RPM
• Clutch is released with vehicle in gear When the engine is in EITMS mode you may notice a difference in idle cadence. Additionally there may be a unique exhaust odor. These are both considered to be normal conditions.

[grc]

What kind of air-fuel ratio are you running at idle and very low rpm's?  If your tune didn't include richening the mixture in those areas, you will rapidly build heat in the cylinders at idle and low speeds (like in heavy stop and go traffic) and the system will shut down the rear cylinder when you stop.  You can turn the EITMS system off if you want, but I wouldn't.  Much better to tune the bike so you rarely build up temps that turn the system on, but still leave it activated for those times when even a good tune won't help.


JMHO  -  Jerry

[mcdonaldroadcapt]

Without the use of a dyno, can a Tech just richen up idle and low RPM?  I don't want to touch mid and upper as these ranges are super.  Mine is a trike conversion and Harley is not up to three wheel dyno service. 

[HOGMIKE]

Without the use of a dyno, can a Tech just richen up idle and low RPM?  I don't want to touch mid and upper as these ranges are super.  Mine is a trike conversion and Harley is not up to three wheel dyno service. 

IMO, you would be a good candidate for a TTS package.
If your "tech" is not up to speed with this program and if you have some time, you COULD do it yourself!
 

[grc]

Without the use of a dyno, can a Tech just richen up idle and low RPM?  I don't want to touch mid and upper as these ranges are super.  Mine is a trike conversion and Harley is not up to three wheel dyno service. 

Absolutely. 

I'm guessing that since you have a trike, and that doesn't work with the dyno's at any motorcycle shops I've ever seen, what you have is a canned map that was applied with a SERT.  Those canned maps, in my experience at least, don't do anything with idle mixtures or low speed/light load mixtures (closed loop).  That would explain why you still have the high temps and the resulting engagement of the EITMS when you stop at lights.  You don't need a dyno operator, you need a tuner that is good with the SERT/SEST/whatever.  After all, idle isn't set on a dyno anyway (think about it, zero throttle and the wheel not turning), and many/most dyno's in motorcycle shops don't have load cells that allow for light throttle/light load tuning anyway.  All you need is someone who understands tuning and the software.


Jerry

[mcdonaldroadcapt]

Thanks for the advice.  I took my bike to another dealer and the service writer says engine is showing an error code at idle. I am to take it back when the shop forman, who is the super tuner, returns to the shop.  I complained about lean idle and that is when the service writer checked the codes.  I wonder if the two relate?