<div class=”d4p-bbp-quote-title”>Greg Wright wrote:</div>
Are you trying to keep what engine you have a secret? You will get a lot more help if you would give us a clue. As the title stated is no improvement, you could be running a moto, rotax, KZ, kid kart etc.
sorry, totally forget to stated engine, it was Rotax FR125 Max, and currently run jet number 168 both Kart but one act very funny other working fine.