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[panhead1]

I have an 09 street glide with a s&s 117" motor with 585es cams and d&d 2 into 1 exhaust..  Around 10-1 compression.  It was supposedly dyno tuned just havn't been able to look at the map yet.  For some reason.  Any time you let off the throttle completely its almost like jake brakes are kicking in until you hit 2k rpms then you are coasting like normal.  Never seen a bike do that before.  Has anyone ever heard of someone tuning something like this or is this just something in those 585 cams?  It also has a hesitation all the time if you crack the throttle very fast off of an idle.  Like It will almost die.  Some weird tuning.

[INDEPENDENT_1]

Definitely sounds like a tune. The 585's have enough overlap and duration that they should not have a jake brake feel and the hesitation should definitely not be a problem. How many cc's are the heads? Id say they must be in the 95 range if you are only at 10:1 compression or maybe you're running a dished piston? Thats a touch light on the 585 cams but with those cubes, it should be plenty safe and be very street and pump gas friendly with the right tune installed. Have you checked CCP's? Leak Down? what size throttle body? Is it opening and closing correctly?

[panhead1]

I believe they are around 95cc heads. It has the se58 mm throttle body.  It started as the 103 stage 4 set up with the mva heads i believe.  Had a motor problem so had to replace everything.  So got new cases and sent them and the heads to s&s for case boring and matching the heads to thier pistons.  I haven't checked ccp yet or much else for that.  It runs good down the road just none of that set you in the seat feel for a 117. 

[panhead1]

I got to take a look at the map. I can send the map to someone if they want to take a look at it and see what they think.

[FLTRI]

Do you have Dyno results?
Those results will indicate if the engine is sumping.
You have described exactly what sumping feels like...dragging brake or "jake brake".
Run the bike for a while then remove the crankcase plug and measure how much oil comes out.
Anything more than 3-5oz indicates the flywheels are into the oil at the bottom of the cases...kinda like a boat in water when you roll of the throttle.
Hope this helps,
Bob

[panhead1]

Nope don't have any dyno results.  Not sure it would be that sumping.  Since the minute it hits 2k rpms it doesn't do it any more.  And if you just barely move it off 0 throttle  it seems pretty normal but right on that edge as soon as its 0 thottle its braking can hear it in the exhaust.  Although could be something like sumping or dragging, or just how these motors are.  When you shut the motor off it just immediatly dies and makes a kind of clunk sound.  It has about 8k miles on it.

[Johncr]

Sounds like fuel map is shutting off the injectors on decel. My 09 does the same thing.

[panhead1]

Here is the Dyno chart but this was over a year ago. Not that It case say much for the deceleration problem and hesitation just off idle.

[INDEPENDENT_1]

I dont think you mentioned what tuner you have but if you reload the Map and reset the adaptive fuel, it may feel much better.

[panhead1]

The tune on it now is with sent but also have a tts married to it also if I go that route.

[INDEPENDENT_1]

Reload the MAP and check the box that says "reset adaptive fuel and reload the cal and see what happens. Save the previous tune first of course.

[panhead1]

On the throttle sensitivity do you guys just have it the same as the header across the board or do you have it a little lower for the lower rpms.  Didn't know if changing that like all the canned maps have it progressively going back to the 1 to 1 setting when at higher rpms.

[Ed Ramberger - One_Screamin_Eagle]

I have an 09 street glide with a s&s 117" motor with 585es cams and d&d 2 into 1 exhaust..  Around 10-1 compression.  It was supposedly dyno tuned just havn't been able to look at the map yet.  For some reason.  Any time you let off the throttle completely its almost like jake brakes are kicking in until you hit 2k rpms then you are coasting like normal.  Never seen a bike do that before.  Has anyone ever heard of someone tuning something like this or is this just something in those 585 cams?  It also has a hesitation all the time if you crack the throttle very fast off of an idle.  Like It will almost die.  Some weird tuning.

The injectors are shut off on zero throttle decel until about the 2k area.  That is normal.  When you barely touch the throttle they turn on again. Is it possible you are not used to a larger displacement engine with compression that will engine brake harder than a stock one? The effect would also seem worse if you were in a lower gear running the rpm high on decal.

[timtoolman]

My 09 ultra with a Hillside S&S 117 with a Rush Wrath 2-1, does the same , Dan thayer tried and tried to get rid of the decel pop I have , mine  sound's like  a truck jake break on decel , im told just the nature of the 4" muffler


Sent from my iPhone using Tapatalk

[panhead1]

I finally got a laptop hooked up to the bike and retuned it and reset the afr.  Got rid of the hesitation of idle all the time.  Runs a little better now also.  Had the engine light come on every time after i started the bike for about 5 secs also.  was the 1511 and 2101 codes so cleaned both the connections and haven't had the codes come up again yet.