150cc grom runs like sh*t
Hey all! I recently acquired a 14’ grom that has a 150cc big bore kit installed. I didn’t know it at the time and it didn’t seem like the previous owner did either. When I ride the bike after it gets warm (a couple minutes after starting). only when I’m riding a consistent speed it feels like it cuts fuel for a few seconds. After it falls on its face it picks right up where it was and runs fine for maybe 5 to 10sec and does it again and again. It’s really bothersome and I’m curious if anyone else has run into this issue or something similar before?
Also to note. The bike does have a power commander installed which I haven’t hooked up to a computer yet. And the spark plug is white like the bike is running lean. Tune issue? Or something else?
Thanks!