| Author | Message | ||
     Freezerburn840 |
Okay I had my mechanic take a look at the issue last night at a bike night close to home. Bike seems to be getting worse with that steady rpm at 4.5k. He thinks its the throttle bodies and they need to be sincd. If not the last thing would definately be a fueling issue. If it is a fueling issue. I would have to send back the Barker ECM and would have to upgrade to a fully programmable version. I am still on the fence about that or just go back to the stocker and get my ECM reflashed again with the pump gas or stock flash. Aggravating to say the least. | ||
| 1_mike |
Freezer - I doubt your T.B.'s need work. They may be out...but I doubt it. A short story - I had an HMF exhaust on my CR before the Barker. Had it tuned "fairly" well. Not perfect, but getting there. When I installed the Barker exhaust....it was a TOTALLY different tuneup. Almost opposite the HMF. I had to lean the high rpm cruise and hard acceleration and richen all the low rpm stuff. Just the opposite of what I'da figured. Before you mess with the throttle bodies (they are sealed ya know), I'd bet breaking the seals on the adjustment screws will really piss off the Harley guys if you need other work. Not to mention the possibility of screwing with the ECM/TPS setting calibration. Anyway, give the Erik Buell Racing team another try. Explain everything exactly to them. Funny thing...when I started redoing my mapping, I stumbled on the perfect cell values for 4500 to 5500 cruise right off the bat. It was/is very hard to work around cells that are great, to give just a "little" adjustment right next to what's already great...! Good luck. Mike | ||
| Mountainstorm |
When I first installed the Barker I noticed some "stumbling" at a steady 4-4.5K like when the engine is being over run. Nothing that I would call annoying, just noticed it. When the plates start to crack open the stumble or unsure "beat" vanishes. It's only there at slight throttle opening under no or low/variable load. After riding the bike the stumble cured itself. I do not know exactly how the ECM "learns" but whatever it did seemed to make that one hesitation or unstable throttle/load match up get a lot better. Secondly, with the QC installed the bike does not idle steadily and seems to be more "farty" about how it responds to a rapid opening of the plates at low RPM. Once I take the QC out the engine idles perfectly with distinct beats and no "dancing" about. I also not that with no QC and an open airbox the engine is even more steady at the dreaded 4-4.5K RPM range and there is no surging at all. My advice: ride it. A Lot. | ||
| Freezerburn840 |
When the plates start to crack open the stumble or unsure "beat" vanishes. It's only there at slight throttle opening under no or low/variable load. This is exactly what is real annoying to me. It misses and has that unsure beat like you say. This is exactly what is happening. | ||
| Freezerburn840 |
Thanks for the responses. I have been in dialogue with Danny at Erik Buell Racing and have checked all what he has suggested. Everything has checked out. Hopefully it will just learn. I did not purchase a QC. It is running wide open. I do have an K&N and the stock air filter. Been using the stocker wonder if I should try the K&N? I hope its not my plugs I just changed those 2k ago. | ||
| Mechanicsn |
I have the Barker on my bike with the race ECM and after a few hundred miles it's starting to do like Mountainstorm said and smooth out in the part throttle areas. I second the vote for riding it. And enjoy your newfound attitude and horsepower. | ||
| Freezerburn840 |
Thanks well I am getting a free dyno run next Saturday. We will see where its at maybe by then I will have a lot miles on the bike and the comp. will start learning. |
