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2.7K views 43 replies 18 participants last post by  RoosterMan  
#1 ·
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so after blowing a Gasket on my 2011 Road Glide, I limped it to the dealership this weekend. well they had a beautiful 2020 Road Glide with autotune, pipes, handlebars and in a beautiful stiletto red. Well after not so much discussion with wife and some negotiations with dealership I road it off the lot.

Well after a few days of riding and trying to get use to the increased power of this bike I had a friend ride it, he thinks the idle is a little low. Currently it idles about 700-900 rpm and idles itself to fault and dies.
Question is with it having an autotune shouldn't it idle higher closer to 1100rpms?
And if it is truly idling this much lower, how would I go about raising the RPMs?

once riding the bike it takes it a bit but seems to ride well.
thanks for any advice.
 
#8 ·
fairly certain that isn't compatible with any tuner you'd use on an M8, the dealership sold you a bike they have no idea of the mods, the since it had “autotune” to let it run a bit before taking off since it needed to calibrate the tune thing is ridiculous, this is them talking about things they know nothing of, as far as your buddy saying it idles low, I didn't notice the S&S jugs at first, this bike seems to be highly modded and has a large cam, that lope will seem as it's idling low...
 
#9 ·
Congrats on the new ride but buying a bike with modifications like that from a dealer that knows nothing about it is a very huge gamble. See if the dealer can give you more info or give you your money back. A bike with an issue like that should never have been allowed to leave that dealer and I bet they didn't even inspect it. Too many red flags.
 
#15 ·
@bigc1066 Congrats on The Glide!
Send an email or call Thundermax They can definitely assist you with your issue.
If You can’t wait for a reply try shutting the Glide off with the RPMs where You want it to idle at and most likely it will stay there.
Best of Luck!
Mike U.

 
#16 ·
Not to take away from @craigffb Craig’s observation yes it definitely looks like it took a dirt bath but does anyone happen to notice the possible reason why? Did this thing get smoked or possibly start catching on fire??
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That part number label is definitely heated/burnt
 
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#19 · (Edited)
@bigc1066
This Thundermax needs a cable (and a laptop) in order to read and edit your bike's parameters.
The dealer should have provided a cable for you to serve that purpose.
If you can read the Thundermax unit you can change idle speed.

I would contact the dealer and find out if they can get you the cable. Judging by the sales department's reply, I would speak to the Service Mgr.
If they can, find out if they can take a look at your Tmax tuner and make necessary changes.
If not, you can contact Zipper's Performance and get one.


There is documentation available online for all of Tmax's tuners.

Underneath this tab is the USB diagnostic port, which is used to communicate with the tuner.

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#20 ·
Considering the OP is in TX it could have been in a dust storm(s) and not necessarily a flood. Either way the dealer should have done a better job cleaning it up before putting on the floor. The original owner definitely sunk a lot of coin in that motor amongst other items, which would concern me with it only being 5-years old. Although there are plenty of Steady Eddies out there that change bikes like underwear.

I think Scott O was right about probably having a big cam which makes the idle seem off. I would keep a close eye on the oil level as you put miles down on it and listen for not normal sounds. If the dealer doesn't know about the upgrades I would have them contact the previous owner and find out. Doubt they would tell you who it was, but they surely know.
 
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#22 · (Edited)
Any one (or any combination) of the thoughts expressed above may be correct, but you (OP) shouldn't jump to any conclusion that you may have bought a lemon. There's a lot to be learned before you start panicking that you spent your hard earned money on a highly modified motor that might hand-grenade itself at any moment. We seemed to have jumped quickly from the only concern being the idle speed, to thoughts that it may be a monster motor build that's going to be nothing but problems, or that it's been through a fire, flood or other calamity.

I think the thought of trying to find out who the previous owner was, and what specific mods were done is the obvious first step. I'd start by checking with the service dept. to see if they had worked on the bike. The answers to most of the questions might be answered quickly as they'd have the service record details on file. If they didn't do the mods, then ask the sales dept. about getting the previous owner's info. They should be reluctant to give you his/her phone number, etc., but If that comes up empty, I'd start by calling (w/ VIN # in hand) the next closest dealer/s. If that fails, try independent shops near you, especially one that has a reputation for performance builds. If all that fails to deliver the info you need, send a private message to member - crazy4ink. He's a very knowledgeable tech that also lives in Texas and he should be able to look up the bike by VIN and should be able to point you in the right direction as to where the service work/mods was done - if they were done by an HD dealer.

The fact that it has S&S jugs on it most likely indicates that the previous owner had some serious mods done to it - maybe fairly moderate, or maybe extreme mods. Regardless of how this comes out, there's a lesson to be learned here that you need to really look a used bike over carefully before laying your hard earned money down. I personally would never buy a bike with replacement jugs, but there are others here who would, as long as you have service records that would layout exactly what's been done. Was the title clean ... or was it a salvage/rebuilt title?

No need to panic yet, but it's time you do some investigating to see just what it is that you bought. Start with the selling dealer and work your way out from there. Good luck with what ever you find out.
 
#25 ·
View attachment 503714
so after blowing a Gasket on my 2011 Road Glide, I limped it to the dealership this weekend. well they had a beautiful 2020 Road Glide with autotune, pipes, handlebars and in a beautiful stiletto red. Well after not so much discussion with wife and some negotiations with dealership I road it off the lot.

Well after a few days of riding and trying to get use to the increased power of this bike I had a friend ride it, he thinks the idle is a little low. Currently it idles about 700-900 rpm and idles itself to fault and dies.
Question is with it having an autotune shouldn't it idle higher closer to 1100rpms?
And if it is truly idling this much lower, how would I go about raising the RPMs?

once riding the bike it takes it a bit but seems to ride well.
thanks for any advice. View attachment 503712 View attachment 503715 View attachment 503716
Purty . . .
If the dealer can't fix the idle problem - take it to a good, recommended performance shop and let them have a try - if corrected there - take the bill to the dealer for reimbursement (partial or in total.)
Ride on brother!
 
#27 ·
Update on what I have done and will be doing

So took the bike for a week of daily driving. Took some time to really get use to the throttle response and friction zone. So for now it runs. Really likes 3k rpm when riding around. When sitting idle it wants to run higher but is tuned to a lower idle rpm.
Found a dyno shop about 45min from home that is willing to help me find out what’s going on and what build the motor has. Plan on dropping it off Monday (next day off).
Also I think it is drinking fuel like water. Drove 2 round trips to work/class about 45miles one way. And had to refill after each round trip. I know that can be adjusted some with the ThunderMax but not enough I bet.

 
#35 ·
Update from the Motor Company. Bad O2 sensor, after calling ThunderMax and having the remote in the the ECM it was determined that an O2 was out. Mechanic said he has ordered new sensor and will get the bike back on the dyno to inspect for anything else asap. So that explains so much of the idle, fuel mileage and etc. (ThunderMax) EFI default to a high fuel dump to prevent burning a cylinder is what we were told by them)
 
#40 ·
I have seen gaps between HP and TQ. I just tuned a 131” that made 169 hp and 148 tq. It just depends on what is done to the engine.

@bigc1066 Since the tuner was able to connect to your Thundermax; was he able to find out what is in your bike? Is it a 128” or 132”? Cam? Injectors? Also keep in mind you are going from a Twin Cam to an M8 and they do ride different. These M8s like more rpms than Twinkies did. And on a side note, those big radius pipes are not helping your engine’s performance. M8s like more backpressure than Twinkies did.