Before any mod, no jerking at all.. It happened after install LCP. When re-bore throttle body + 4-2-1 extractor it become worse.. If rev between 4k and 5k rpm at 1st gear then shift to 2nd gear by releasing clutch too fast, it jerking. 2nd gear onwards no prob although with fast clutch release... I encounter that by late clutch release (wanna activate high cam) or rev under 4k rpm. More than 5k rpm no jerking.

Wanna do PADT check at SC. Some said need to reset ecu after re-bore TB.
I think it only happened to my car

Not really good in mod car.. Hehe... Lots to learn...
k00Lric, u know others neo cps owner? Ask them to discuss here lah

Can intro their self here and add to our cps member list...
p/s: Hope can help.. If not, sorry..

My car is not virgin anymore...

Thanks for your reply. I'm sorry that i didn't clarify abit more. Those NEO CPS owners claim that when they got their cars already had that jerking problem when up-shift frm 2nd gear to 3rd gear ard 3K~4K RPM. And 1 of the them got their car problem resolved by having the ECU swapped at the PROTON COE. So now, I would like to find out does this happen to those GEN2 CPS owners which their car is still not modded yet.