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

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post #1 of 25 (permalink) Old 07-10-2013, 05:05 AM Thread Starter
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Dealer or DIY?

I had the SEST installed by the dealer when I bought my bike, as well as SE Nickstick slip on, and SE Ventilator AC. I recently removed the cat from the head pipe and now the bike is running like crap.

Im not going to get into the rich or lean debate, but it has a lot of gurgling, and popping on decel, and while cruising the bike seems to stutter, and will not maintain constant rpm.

Questions are:

1. Should I take to to the dealer and let them fix it?

2. If I go with ^ option, how much is it going to cost me (estimate)

3. Should I skip the dealer, order the CD and cable to tune myself?

4. Should I do none of the above, and just wait until I can afford a PCV or PV-1?

Thanks for any advice. I am holding of on calling the dealer, because I get better answers when I go in person. I might go by there this weekend if needed.


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post #2 of 25 (permalink) Old 07-10-2013, 05:14 AM
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If you can, research the task & see if you are able to correct it yourself.. In the worse case scenario you can take it to the Stealer..


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post #3 of 25 (permalink) Old 07-10-2013, 06:00 AM
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I would find out here who does excellent tuning in your area and have it properly tuned by a pro. The tuner you have can not be sold because its married to the bike so you might as well use it. I don't have the sert but knowing me I would have the CD and everything that is supposed to come with that unit.

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post #4 of 25 (permalink) Old 07-10-2013, 08:36 AM
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Since you had your exhaust off and disconnected the O2 sensors check to make sure they were put back properly. It sounds like they are reversed to me.

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post #5 of 25 (permalink) Old 07-10-2013, 08:47 AM
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Quote:
Originally Posted by faststan View Post
Since you had your exhaust off and disconnected the O2 sensors check to make sure they were put back properly. It sounds like they are reversed to me.
i was thinking the same thing.


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post #6 of 25 (permalink) Old 07-10-2013, 10:12 AM
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I would rather do it myself than take it to the dealer. The ones that really take the time to do it right are few and far between. My dealer did mine after I changed the header and a/c, it ran ok but when I noticed it was running very hot, I bought the software ($50), cables ($50) and checked it out to find the heat management was "OFF", and my redline was set to 7000 rpm! I think the dealer just used a canned download to flash my ecu and didn't spent the time to Smart Tune" it like the service manager said they did. Dealer mechanics are under the gun to do it fast, under the prescribed time. I changed A/F ratios and retarded the timing a bit and it runs 20 degrees cooler, the heat mgt works and my redline is now 5800, and my gas mileage is still around 45 mpg.

I say, do it yourself, then if it still runs like crap, find a "reputable" tuner. (Check those O2 sensors to make sure they are in the correct hole)

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post #7 of 25 (permalink) Old 07-10-2013, 11:35 AM
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Quote:
Originally Posted by faststan View Post
Since you had your exhaust off and disconnected the O2 sensors check to make sure they were put back properly. It sounds like they are reversed to me.
I would follow this advice before changing anything else. The exhaust cats used on the new bikes produce minimal back pressure and removal should not make significant changes to the tune. Yes I know they produce a lot of heat, but not much restriction.


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post #8 of 25 (permalink) Old 07-10-2013, 11:41 AM
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Gurgle and pop on decel is due to less restriction in the pipe, the cat minimizes mix of reversion air and muffles the sound.

The stuttering could be lean miss, but I guess it could be the O2 sensors being switched, but without the Cat material in the headpipe the cross talk is going to be higher. Maybe it's enough to only be an issue under cruise conditions. Dunno...

Since you already own the SEST, pick up a cable and give it a shot. Certainly the cheapest route to take at the moment. BTW I only have experience with the original SERT (TTS), but I thought the newer SE Street Tuner was limited in functionality... but dunno for sure.

Proper dyno tune around here is $350-400 + cost of the tuner if you didn't have one. If you want to do the DIY tune, consider saving up for the PowerVision. By far the easiest route to take. TTS would be a good alternative as that's also what most pro tuners will be using. My only gripe with TTS is that you need to cart around a laptop if you want to do your own tuning. I've had marginal luck doing that in the past because of the vibration and laptop over heating with the lid closed... PV beats TTS in this area from a convenience perspective, hands down. If you go the route of getting dyno tuned by a pro, ask what they recommend.

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Last edited by rageglide; 07-10-2013 at 11:44 AM.
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post #9 of 25 (permalink) Old 07-10-2013, 12:02 PM
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Quote:
Originally Posted by faststan View Post
Since you had your exhaust off and disconnected the O2 sensors check to make sure they were put back properly. It sounds like they are reversed to me.
+1 -- I am going with 02's as well sounds like they are reversed.. I would swap them and give it a try, also make sure bolts are tight, gaskets are making a good seal, yada yada..

Just decatting the pipe alone wont make it run like that.

I had the Same issue and it was the 02 sensors
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post #10 of 25 (permalink) Old 07-10-2013, 01:46 PM
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When I swapped head pipes initially I realized I got the O2's mixed up too because they aren't marked front and rear, but rather G and B or some nonsense...

2012 fltrx
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