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ECM/Fuel Management systems ECM/Fuel Management systems For Road Glides

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post #1 of 18 (permalink) Old 08-31-2011, 10:38 AM Thread Starter
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Confused about Tuning

So this is my 1st Harley and first motorcycle that I'm actually considering doing some add-ons to. I believe I will do a full Stage 1 at some point and realize that I have to remap the computer. Now the confusion I have is seeing all the post and talk about Tuners. If I replace my header, exhaust and A/C why would I need more than 1 map in my ECU?

I'm not doing any of this for performance, 103 has plenty for me. Not doing this for better mpg, currently get better than my car as stock. I'm doing stage 1 just for the sound and to reduce a bit of heat on my legs. Once I flash a "new map" do I really need to keep changing it?

Cost isn't a real issue but if i'm doing this for sound/looks do i really need to spend the money for a tuner? Can I have someone do the ECU flash without paying for a tuner?


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post #2 of 18 (permalink) Old 08-31-2011, 01:37 PM
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if all you want is sound and heat reduction, leave out the AC from the equation and you wont have to remap.
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post #3 of 18 (permalink) Old 08-31-2011, 01:48 PM
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+1 Kat...
One or the other - exhaust or intake and you'll be fine without a map. If you do both, you'll push more air and you're going to need more fuel. Harleys run lean and hot enough already.

The next logical question is what fuel management system and thus begins the holy wars. I have a Direct Link, but there are many options. Decide how far you want to go and then prepare to sift through many, many choices.



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post #4 of 18 (permalink) Old 08-31-2011, 01:57 PM
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For what a remap at the dealer would cost you, not to mention it will still be lean as per EPA standards take that money and get a tuner. I like my Dobeck EJK. Just call them and tell them your mods and it will come preset for your application. One more thing. If you want to loose heat, get rid of the cat.

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post #5 of 18 (permalink) Old 08-31-2011, 02:22 PM
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Originally Posted by ftb2ss View Post
I'm not doing any of this for performance, 103 has plenty for me.

If'n ya ain't skeer'd it ain't fast enough..........

Unfortunately the stage 1 mods will not do much to reduce the heat without a tune. If you do all the stage 1 mechanical mods and then a stage 1 download you've only gotten yourself back to the baseline, it's still too lean to run right.
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post #6 of 18 (permalink) Old 09-06-2011, 10:01 PM
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I'm glad you asked this question ftb2ss!

Here's what I have experienced. On my first Harley, a 2011 Street Bob, I had SE slip ons and an SE Heavy Breather added before I took delivery. The dealer said they had to "flash" the ECM to accomodate these changes.

I had also bought the HD SuperTuner but did not install at delivery. Once I reached 1000 miles on the bike, I had the bike tuned with it.

The comparison between before and after the tune wasn't that much - a couple HP and torque higher with the tune. I started to wonder if buying the tuner was worth it (the SuperTuner cost $459, plus $282 for the dyno). But, as I was thinking of a cam change sometime in the future I would need the tuner eventually. But, as things turned out, I got the RG bug, sold the Street Bob with the mods I did, and bought an awesome 2010 in Scarlet Red!!!

My goal was to increase HP and TQ, and it seems from my experience above that one could get that just from a change in mufflers and AC and a remap, no tuner. But maybe I am not seeing everything here?

2010 Road Glide Custom FLTRX Scarlet Red - SE Stage 1 AC, Carriage Works Tornado Slip-on, SE SuperTuner, Jagg Fan Assisted Oil Cooler, 12" Windvest, HD Chrome Saddlebag Guards, Arc Audio MPAK 6

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post #7 of 18 (permalink) Old 09-07-2011, 08:40 AM
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These bikes are to hot stock. Would run better with a tuner and muffs AC all left stock. Cold weather its nice having the heat come off the bike stock. In the heat you and your Harley are going to suffer.
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post #8 of 18 (permalink) Old 09-07-2011, 08:47 AM
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Sorry for the dumb question, but is there a way to simply remap the ECM to provide a richer condition? I realize a tuner would provide a lot more flexibility, but was wondering if the ECM could be reflashed to address the lean issues.

2010 Road Glide Custom FLTRX Scarlet Red - SE Stage 1 AC, Carriage Works Tornado Slip-on, SE SuperTuner, Jagg Fan Assisted Oil Cooler, 12" Windvest, HD Chrome Saddlebag Guards, Arc Audio MPAK 6
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post #9 of 18 (permalink) Old 09-07-2011, 09:01 AM
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Originally Posted by HarleyLance View Post
Sorry for the dumb question, but is there a way to simply remap the ECM to provide a richer condition? I realize a tuner would provide a lot more flexibility, but was wondering if the ECM could be reflashed to address the lean issues.
harely sells a street legal tuner part number 41000008 that allows the end user to reflash thier ecms and not effect the warranty. Many will say these reflashes will not richen up the afr but they are wrong. I had one and the stage 1 reflash is richer then my tts vtune in all areas other then at idle.
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post #10 of 18 (permalink) Old 09-07-2011, 01:45 PM
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If you want to do more performance mods later, then a tuner is a good investment now. If not, then it's not mandatory, but still a good idea IMO. Good luck!



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