| Author | Message | ||
     Sgthigg |
I own an 05xb12scg. Its an american model i brought to japan with me. Since I have been here I have noticed alot more poping on decel and the motor is running alot more rough at idle range. I have done the obvious things. TPS reset,plugs,looked at most wires,etc. I was wondering if the fuell here is different I run japanese premium 91 octane. Does anyone know if Japanese fuels are different than American? If so what does Buell do for the Japanese models for them to adapt? | ||
| Glitch |
Have you checked to make sure the muffler and header have a nice snug connection? | ||
| Buellinachinashop |
Yes, the fuel you run is different than here in the US. Harley tests motors using Japanese fuel and the motors are set up for not only performace, but emmissions standards for Japan as well. I'd contact Buell to see what can be done to help you, it may be as easy as a re-map of the ecm. | ||
| Clutchless |
Japan uses a total different emissions system than the states do. my one friend that went for active duty to japan had to have his bike converted to meet japan's standards. Much like us in the real united states have to get ours converted to meet california's epa standards when we move there. has your's been "switched over" ? if it has I think buellinachinashop might have the right idea, they might not have adjusted your fuel map. or left something on the intake/exhaust system not sealed or "torqued to spec". | ||
| Sgthigg |
Thanks Buellinachinashop. I thought I heard something about that somewhere. I will try to see what I can do. I sord of have a contact at BMC that might be able to help. Glitch, I have checked, everything seems snug at the muffler connection. Also on the top of the cylinder at the head output I took my finger where I couldnt see very well and wiped all around looking for any soot indicating a exhaust leak. None she was perfectly clean. So Im thinking Im good there. Clutchless, I had it "converted" to Japanese specs as well for the emissions test(ie jap pipe, jap ecm, stock filter). Luckily a buddy had a stock pipe and ecm for the emissions test. Put the stuff on and it passed the test no problems. Actualy your buddy hopefully didnt more than that or he got jerked around by the Japanese Goverment. I put it back to drummer, k&n filter, and race ecm now. Ha Ha she is the baddest sounding Buell in Japan I have seen so far. And I have seen way more here in the last 4 months than I have in the US in 2 yrs..go figure Well Thanks guys I will definetly see what the difference is in the fuels and start a topic on it for future reference. | ||
| 1313 |
Does anyone know if Japanese fuels are different than American? Japanese fuel is most definitely different than American fuel. The differences in fuel and the typical Japanese Buells duty cycle were the reasons that the fan kits had to be created for the DDFI tubers. 1313  | ||
| Teeps |
Clutchless Posted on Monday, December 03, 2007 Much like us in the real united states have to get ours converted to meet california's epa standards when we move there. This is not true. A 49 state bike (or car) can be imported into CA. by a CA resident; but the odo must have over 7800 miles. This qualifies said vehicle as "used" in the eyes of CA DMV. A licensed, legal, resident of another state can import a 49 state bike (or car) to CA, if the vehicle is currently registered in the other state. Ask me how I know... | ||
| Stinky_finger |
What is the octane of the fuel that you are using in Japan? They use the RON method of calculation, which is different from the US method of rating gas (PON or (R+M)/2). I believe that 91 octane in japan would be really be ~87 in the US. So 91 US octane would be 95 octane in Japan (or Europe). Quick google search brings this chart up: http://www.btinternet.com/~madmole/Reference/RONMO NPON.html and here is a wiki page on octane: http://en.wikipedia.org/wiki/Octane_rating | ||
| Buellerinjapan |
I just put a Drummer on mine not very long ago and it also seems to be popping since I changed over. I live in Tokyo and use high-octane gas. I`ve played around with the muffler and header and still can`t seem to get it to stop. I haven`t gotten around to installing a race ecm yet. One thing for sure, it gets everybody`s attention. | ||
| Bombardier |
A free flowing exhaust can let air back to the o2 sensor and create a lean condition on decelleration. This was sourced from a bosh web info site on o2 sensors. | ||
| Blake |
I don't see that. It seems to me that air reaching back to the O2 sensor would tend to indicate an apparently leaner running engine (more oxygen at sensor) and thus create an actual rich condition. |
