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[dite]

We bought a used 2011 Heritage for my wife from a dealer. The previous owner had the dealership install the Stage 1 kit with air filter and Vance & Hines Staggered pipes. They told us they tuned or flashed the on-board module for the Stage 1 kit.

When we bought the bike, we had the dealer install the Harley Smart Security system (#41000021A). They had to replace the module from what we were told.

They gave us the old module (#69991-11 BCM BASE Y-AXIS) back.

Should they have flashed the new module for the Stage 1 kit that was already installed?

Why does the bike backfire when we decel from speed?

Could it be they forgot to flash the new module after they installed the new module to compensate for the Stage 1 kit?

[trahog]

Get a TTS master tune and a good tune.

[glens]

We bought a used 2011 Heritage for my wife from a dealer. The previous owner had the dealership install the Stage 1 kit with air filter and Vance & Hines Staggered pipes. They told us they tuned or flashed the on-board module for the Stage 1 kit.

If that's what they told you it's probable that's what they did.  If a piggyback controller (such as the FuelPak) were used instead and the previous owner removed it for later use or resale then you'd definitely want to get something done to bring the ECM calibration into line with your components.

When we bought the bike, we had the dealer install the Harley Smart Security system (#41000021A). They had to replace the module from what we were told.

They gave us the old module (#69991-11 BCM BASE Y-AXIS) back.

Should they have flashed the new module for the Stage 1 kit that was already installed?

Why does the bike backfire when we decel from speed?

Could it be they forgot to flash the new module after they installed the new module to compensate for the Stage 1 kit?

It appears as though having the security system installed brought you somewhere near the recall I just found via google:  http://www.asphaltandrubber.com/recall/recall-harley-davidson-softail-security-system/

At any rate, the module you referenced is the Body Control Module while the EFI calibration resides in the separate Electronic (engine) Control Module, so whatever programming was present in your ECM when you took the bike in should still be present in your ECM.

[grc]

We bought a used 2011 Heritage for my wife from a dealer. The previous owner had the dealership install the Stage 1 kit with air filter and Vance & Hines Staggered pipes. They told us they tuned or flashed the on-board module for the Stage 1 kit.

When we bought the bike, we had the dealer install the Harley Smart Security system (#41000021A). They had to replace the module from what we were told.

They gave us the old module (#69991-11 BCM BASE Y-AXIS) back.

Should they have flashed the new module for the Stage 1 kit that was already installed?

Why does the bike backfire when we decel from speed?

Could it be they forgot to flash the new module after they installed the new module to compensate for the Stage 1 kit?

I assume the module they replaced was the BCM (body electrical control module), not the ECM (engine control module), since the BCM is responsible for the security system.  The engine calibration is stored in the ECM, so changing the BCM wouldn't cause your problem.

The stage 1 street legal flash from Harley doesn't address things like exhaust popping, so it's not uncommon especially if you install a significantly higher flow exhaust.  The first thing to check is the basics - any air leak in the exhaust system can cause popping, so check for exhaust leaks at all the joints.  Once the mechanical stuff is verified OK, if you still have popping then you will need to consult a real tuner.


Jerry

[sadunbar]

We bought a used 2011 Heritage for my wife from a dealer. The previous owner had the dealership install the Stage 1 kit with air filter and Vance & Hines Staggered pipes. They told us they tuned or flashed the on-board module for the Stage 1 kit.

When we bought the bike, we had the dealer install the Harley Smart Security system (#41000021A). They had to replace the module from what we were told.

They gave us the old module (#69991-11 BCM BASE Y-AXIS) back.

Should they have flashed the new module for the Stage 1 kit that was already installed?

Why does the bike backfire when we decel from speed?

Could it be they forgot to flash the new module after they installed the new module to compensate for the Stage 1 kit?

I take it you don't know if the bike backfired or not prior to dealer working on it after you purchased it?

Installing the Harley Smart security system should have no effect on how the motor runs...

An intake leak or exhaust leak can cause backfiring.  A lean or rich condition - as well as a plain bad tune can cause backfiring.  I'd find a competent tuner and start there...

[willyB]

Tuner! Tuner! Tuner!

My buddy bought a 2010 Heritage and installed a set of free flowing slipons and the stage 1 air cleaner. The dealer said that the particluar slipons where designed in such a way that he would not need a tune or tuner.   Go figure, backfiring etc..

Once I convinced him to get a Power Commander tuner that I use. Problem solved!!!!

If you want to do it yourself (which is really extremely simple) I suggest that you call contact FuelMoto. They sell PowerCommander tuners which I have used successfully for over 9 years. If you call them they will sell you a pre-programmed tuner that matches your exact setup. They are the cheapest in the country. A really great company to work with plus not many tuners know anything about TTS tuners in my area.

www.fuelmotousa.com
877-729-4754
jamie@fuelmotousa.com

I trust their setup so much that I purchased a pre-programmed tuner from them for my brand new CVO Street Glide. The attached dyno sheet is from my tuner friend that wanted to see what these 110's were putting out. He's a good friend so we put it on his dyno (for free) and did a few runs. The blue line is FuelMoto's pre-programmed setup and the red line was after a couple of custom tweaks. As you can see those are nearly identical curves. Only +2.56 TQ and +1.33 HP. I actually run the pre-programmed map because I'm generally up on rpm and the custom map gets a little fluttery up high. I would call the pre-programmed map dead on.

[sehawg110]

We bought a used 2011 Heritage for my wife from a dealer. The previous owner had the dealership install the Stage 1 kit with air filter and Vance & Hines Staggered pipes. They told us they tuned or flashed the on-board module for the Stage 1 kit.

When we bought the bike, we had the dealer install the Harley Smart Security system (#41000021A). They had to replace the module from what we were told.

They gave us the old module (#69991-11 BCM BASE Y-AXIS) back.

Should they have flashed the new module for the Stage 1 kit that was already installed?

Why does the bike backfire when we decel from speed?

Could it be they forgot to flash the new module after they installed the new module to compensate for the Stage 1 kit?

[Midnight Rider]

Generally decel popping or backfiring is from a too lean condition when the throttle is closed at say, 3500 RPM, but not always.  Barring any exhaust leaks, I'd guess that the bike has probably always run that way.  If I had a slight pop or three when the bike is not fully warmed up, I wouldn't be too concerned, if it all but disappeared once the bike got up to full operating temperature.  But if it's doing it all the time, I would not be a happy camper, as it should not be doing it.

The dealer (the bike is still under warranty) should check for exhaust leaks and eliminate that possibility.  Beyond that, you're going to have to discuss with the dealer why they would suggest an exhaust system and whatever download they might/might not have done that makes the bike run so poorly.  And decel popping is NOT normal, so don't let them use that one on you.

[dite]

I called and spoke to the Service Manager and the Stage 1 download was performed on the bike.  After we replaced the Stage 1 items with stock items, the bike performed very well and no backfires or any unusual sounds.

[Lever]

so you  took off the stage 1 air cleaner and removed your pipes and reinstalled the OEM filter and exhaust pipes ?
just wondering if you reflashed your bike  also ?

[dite]

so you  took off the stage 1 air cleaner and removed your pipes and reinstalled the OEM filter and exhaust pipes ?
just wondering if you reflashed your bike  also ?

That is correct, the stock A/F and pipes were re-installed and kept the Stage 1 download.  The Service Manager said the Stage 1 download only enriches the mixture....he said a lot of people have a Stage 1 download without changing the air filter or pipes....he also said it should make it run cooler....the wife is happy!

[glens]

The Service Manager said the Stage 1 download only enriches the mixture....he said a lot of people have a Stage 1 download without changing the air filter or pipes....he also said it should make it run cooler....the wife is happy!

That's funny.  We often hear "the stage one download only raises the rev limiter".  It actually does both (technically it doesn't enrich the mixture, it adds fuel to match the greater amount of air resulting in the same mixture as the stock bike had), but the bike won't run any cooler with the un-stage-one plus download unless the download raises the closed-loop bias (unlikely) because closed-loop operation will pull that extra fuel right back out; to avoid that the rider would have to never operate in the closed-loop areas and always do so in the open-loop areas (how could they know?) or disconnect the O2 sensors.

But your wife's happy now and that's all that counts.

[Ironhorse]

These are all great suggestions.

Start with the easiest one first. Check for exhaust leaks as that is a very easy fix to solve. Take your long neck Bic-Clicker and with the engine running, starting from the exhaust flange hold the flame near every joint all the way back. If the flame flickers near a joint or at the manifold, then you have a leak there. On decel, a leak will cause cooler air to be sucked back into the exhaust system and this can cause popping on decel.

Anyway that's my experience on easy fixes due to popping.

Mark

[dite]

That's funny.  We often hear "the stage one download only raises the rev limiter".  It actually does both (technically it doesn't enrich the mixture, it adds fuel to match the greater amount of air resulting in the same mixture as the stock bike had), but the bike won't run any cooler with the un-stage-one plus download unless the download raises the closed-loop bias (unlikely) because closed-loop operation will pull that extra fuel right back out; to avoid that the rider would have to never operate in the closed-loop areas and always do so in the open-loop areas (how could they know?) or disconnect the O2 sensors.

But your wife's happy now and that's all that counts.

Yes, the Service Manager did tell me that it also raised the "rev limiter", but that isn't a concern for my wife....something like from 5700 to 6100 rpm (not sure of the exact numbers)....

[Ed Ramberger - One_Screamin_Eagle]

We bought a used 2011 Heritage for my wife from a dealer. The previous owner had the dealership install the Stage 1 kit with air filter and Vance & Hines Staggered pipes. They told us they tuned or flashed the on-board module for the Stage 1 kit.

When we bought the bike, we had the dealer install the Harley Smart Security system (#41000021A). They had to replace the module from what we were told.

They gave us the old module (#69991-11 BCM BASE Y-AXIS) back.

Should they have flashed the new module for the Stage 1 kit that was already installed?

Why does the bike backfire when we decel from speed?

Could it be they forgot to flash the new module after they installed the new module to compensate for the Stage 1 kit?

The ECM has the engine flash.  The TSM (Turn Signal Module) is what they replaced with a TSSM (Turn Signal Security Module)  Nothing has changed with the engine control as they are separate modules.