u/After_Ad_3396

Hi,

Got an issue with what seems like a misfire with a Grom at holding a steady throttle at 6000revs, it’s a 2023 model with 3000 miles on it

It’s got an aftermarket air filter and twin exhaust fitted so no 02 sensors.

I’ve tried an ECU reset but for some reason the procedure doesn’t work no matter which one I try.

Do you guys think it might need a remap or something else?

The spark plug seems like it’s running very lean.

It does after running it for a while have a P0300-00 fault code but that’s only just been showing up, the running fault was showing up well before that.

Thanks.