Reply To: GT250 EFI DSpec Stalls at Idle after Warm Up
Searching the aliexpress site for “VAG KKL” came up with this: https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20220928215901&SearchText=vagkkl&spm=a2g0o.home.1000002.0
I would not spend too much money on this. Also I would not trust bluetooth. Bluetooth seems to work well for audio connections but I have not succeeded in sending or receiving standard data in my experimentation. To connect to the 4 wire connector all you need are 3 wires: +12v, gnd and K-line. I drilled a small hole in the side of the interface and soldered directly to the pins. Pad sizes are large enough so you don’t need to be an expert to do this.
I still cannot attach photos to this forum but if you want to send me your email I can send directly.
The program I suggested works with the Delphi MC05 ECU which was fitted to Hyosung from 2012 onwards. I am not sure if it will work with the DAEWOO version. I suggest you contact the program writer for a more informed reply on this. I have communicated with him several times and he was quite helpful.
Your bike interface is probably K-line but the commands to extract data will probably be different. For example my Kymco bike also has a k-line interface but the commands are totally different. Waking up the ECU is quite standard but then you have to do some reverse engineering to extract useful data from the ECU.
I have replace coil no.1 on my bike and so far it is working well. This is the second time this has happened so am note sure what is causing this coil to fail repeatedly. Note that all the ECU software will probably not help with the problem I had since the ECU does not monitor the spark directly. Its only feedback is from the O2 sensor which will not detect any intermittent failure on the secondary side of the coil.
Regards