Quote from gu3st :

The transmission is a sequential but doesn't have auto cut. You need to lift off the throttle to shift up. One thing you could do is basically hold the upshift paddle and then lift off the throttle to engage the next gear.

Downshifts should be easier as the gearbox will be under less load but you can't downshift too fast either.

oh that sux,I wish it has normal transmission.thank you for answer and advice,I will try that.

well it is hard to shift gear up or down,very laggy and sometimes it doesnt shift gear at all.all other cars work normal.I got momo wheel...help!