| Author | Message | ||
     Gofastalot99 |
While I'm waiting for an answer back from EBR, I'm wondering if anyone has sent their EBR ECM back to smooth out the engine? Mine runs relatively rough under 4,000 RPM, worse between 2-3,000 RPM. Since a lot of my riding is stop and go local with lower speeds, it is challenging to live with the herky-jerky, especially under 3,000 RPM. I'm hoping EBR can smooth it out a little at those lower RPMs. | ||
| Dannybuell |
Yes the EBR does smooth out the bottom end. Having putted around for over 94K miles on my S1 the CR's higher RPM need was difficult to learn. These bikes are happiest at 3500+ RPM's. The electricals are the weak point, the RPM's keep the bike's electricals alive. If you don't like riding at those RPM's then you have the wrong bike. | ||
| Orman1649 |
Are you asking if the EBR ECM compared to stock can smooth out the low end or are you asking if EBR can improve over their current tune? I installed my EBR ECM a couple weeks ago and have been amazed by the low end improvement all the way down to 2500RPM. It's like riding a completely different bike compared to the stock ECM. | ||
| Dennis_c |
In 6th gear it is a little jerkey at 2000 rpm but that is luging the engine. EBR did help a little. I never had any problems with stock or with EBR ECM at low RPN at 2500 both ran good. I have EBR becouse I put on a Barker exhaust runs even better now | ||
| Skntpig |
Ummm Downshift | ||
| Gofastalot99 |
Yes, I have the EBR ECM already and I did notice an improvement over the stock ECM. I originally had the generic exhaust ECM then I sent it back to have the Barker-specific load. After that it seemed like I lost some lower RPM smoothness. I then took the bike to a dealer for a flickering IC and intermittent speedometer going to zero. The dealer replaced the ECM. When I got the bike back it was significantly smoother than it was with the stock original ECM and slightly smoother than even the Barker-specific EBR ECM. Now I'm not sure I want to put the EBR ECM back in as-is. I've sent an email to EBR asking if they can smooth it out a little and I'm just waiting to find out what they can do. I don't think I have the wrong bike or I always need to downshift. EFI is not new by any stretch and a certain amount of smoothness is to be expected on a 21st century EFI engine, especially after having a download specific to the exhaust. The engine is stock otherwise. | ||
| Timebandit |
what OEM maps are you guys comparing the EBR to when you say it's an improvement for low end surging? I just had my instrument cluster replaced because of a software programming glitch that caused the Low Fuel lamp to come on whenever it was cold. As part of the upgrade I got the latest fuel map. I've found that the M3HUS142 map for my 2009 1125R has completely eliminated the low-end surging problem I had before. I haven't had really warm weather for testing, but in this current weather (50-F) I have no problems maintaining a steady speeds of ~35 mph when passing through towns. I think this factory map is actually pretty good. | ||
| Gofastalot99 |
It seems you are experiencing what I am Timebandit. The latest factory map seems like an improvement with regard to the low RPM surging. | ||
| D_adams |
Try the EBR ecm again, but disconnect the O2 sensors. Sometimes they can cause small fueling issues, see if that eliminates it by running on just the base map only. | ||
| Timebandit |
Gofast, I am AMAZED by how good the latest factory map has turned out to be. My bike has never been this good. It's like I've got a totally new bike. I put off taking my 2009 1125R to the dealer to get the IC warranty work done because I didn't want to lose any riding time during the riding season. I waited until the weather turned, and had the work done during the "off season." I brought he bike straight home and parked it. We've had some unseasonably warm weather here -- 50F in January in Chicago is unreal. I've had the bike out for a couple of 3-hour backroad test rides, and I am AMAZED by how good the fuel map is. The bike runs so smooth it's unreal. I can't believe it's the same bike. H-D has definitely fixed the problem with the factory map. FYI I am still running the stock exhaust. I think this new map is so good that I have no reason to consider an aftermarket ECM. | ||
| Froggy |
I also thought the same about my R and CR, the latest maps are great, got the EBR ECMs anyway, and they are still 5000% better. The stock ECM is fine, I had no complaints with it, but the Race ECM improved upon it for me. Regarding the OP, it is possible that EBR has developed an updated map for your exhaust since you last sent it in, hopefully they will figure something out for you. | ||
| Duphuckincati |
Dennis c, I gotta presume you're joking about the 2000rpm/6th gear bit. I was just out on my CR and tried that for about 1/2 second, no way you're trying to ride like that! I'm pretty sure there is no motorcycle that has a engine with a 10,500 redline that will run perfectly fine at 2000 in top gear. I know there are some here who would like to ride at under 4000 rpm all the time, you must have these confused with the "other" Harleys. My CR has stock exhaust and the race ecm, may be the best running motor of the over 70 bikes I've owned. | ||
| Streetshark51 |
What year is your bike? I Kay have some info for you, been fighting the same issues with my bike and different exhaust scenarios as well ad stock vs ebr ecms... I am currently having my ecm reflashed and buying the updated injectors. Shoot me a pm for a phone number, would love to share my knowledge. | ||
| Craigsmoney |
If you having problems with low RPM problems, check for water in your spark plug holes, specifically the front one. I just did the valve work on my bike and found it was full of water. I'm sure that was the reason I felt a missing problem with my bike. and on that note has anyone else had water in their spark plug holes? | ||
| Gofastalot99 |
Dean, I'd rather not disconnect the O2 sensors if I can avoid it. Timebandit, I was also enjoying the warm weather in NE IL but I didn't get a chance to ride since I brought the bike back from the dealer. Froggy, I'd agree about the EBR ECM improvement over my original ECM but not compared to the new stock ECM I just got. Granted I haven't put many miles on it but it seems like the new stock ECM is better. I sent the EBR ECM in for the Barkers download a few months ago. Today, I spoke with EBR through email and a TPS reset was suggested. They will also verify which download was put on the ECM. Duphuckincati, I don't plan }on any 2K RPM 6th gear runs nor do I plan on always running under 4K but I'd like to be able to run under 4K occasionally. There is definitely no mistaking the 1125 for any Harley engine. The HD is a lot smoother at all RPMs but I would never run it up to 10,500RPM  Streetshark51, it is a 2009 CR. I'll shoot a pm this weekend. Craigsmoney, there may be water in the plug holes but I doubt it. It's always had the low RPM surging since new and I don't ride it in the rain very often. If I feel ambitious I will check. | ||
| D_adams |
Disconnecting the O2 sensors for a short term test will not do any harm to the bike unless there's something seriously wrong to begin with. What short term is for testing would be less than 15 or 20 miles. You'll know within the first 2 or 3 if it makes a difference. Both plugs are relatively easy to access and it's just a single wire for each. With the race ecm, it will simply revert to the base map as programmed and should run fine. The narrowband sensors will sometimes cause it to "hunt" for the right fueling, it just depends on how you ride. It's also probably the cheapest test you can do since it's free to try (or not). | ||
| Thefleshrocket |
I put the stock ECM (latest flash as of a year ago or so) back on my 1125R when I took it in for warranty work, and it ran surprisingly smoothly. If I didn't know that I'd taken out the EB R ECM, I'd have thought that it was still installed. I didn't even do a TPS reset or let it idle for 10 minutes--just plugged the stocker in and rode off. I am gonna have to do some back-to-back testing to be sure. | ||
| Cycledoc59 |
My bike was a PITA to ride a lower speeds too. I installed an EJK from Dobeck and disconnected the O2 sensors. It, and I are very happy now, and getting 40-45mpg. The EJK is still at factory settings. (the bike already had a race ECM, but swapping out to the stock ECM didn't change low-speed running) | ||
| Duphuckincati |
Cycledoc, what rpm range do you usually ride in to get that mpg? | ||
| Cycledoc59 |
"Cycledoc, what rpm range do you usually ride in to get that mpg?" Just normal riding conditions. A recent 250 mile jaunt was mostly two lane 60mph roads to get to mountain twisties, then a hard burn on a very technical road for 20 miles; more back roads/twisties that tolerate top speeds of 50-60 or so, then home via a chunk of interstate at 75...If all that helps. I run around 3.5-5k when pushing hard on small steep mountain roads. (Still about 1K above what the XB needs for the same results. It also has an EJK and gets 50-55mpg) And they get nothing but 87 octane. | ||
| Sprintst |
2000 rpm? Geeze I might cruise at 3500 rpm, but it's kinda chuggin at that | ||
| Gofastalot99 |
Got a chance to ride a little this week and really loving the stock ECM that was swapped in December. Low speed running is much improved. My only complaint is the flashing CT-"COLD" until the coolant hits 150 but I think I will live with it. |
