First time spot another IS same colour as mind, and thing can't get even better when we on side by side on the traffic lights. In this situation I could resist to floor it!!.....:)
My beep only when is revering, cos of parking sensors than getting louder as it closer lol, surprise ur doesn't beep kentis300, even when vsc kick in it beep.
Look out for a used one eBay, I got hks silent power one, which cost over 400, but u do pay for the quality and brand and it's rite not that loud until u actually flooring it. Try look at the YouTube video also.
Happen to my old car before, I just reset the ecu than it gone, but I would not recommend this, I would say get the code reader first to read the code if nothing identify than try reset the ecu.