I guess i finally know what really happen with my b20b vtec idle problem...
i believe the problem is ( i dont have purge solenoid )
but before i goes to purchase a purge solenoid just want to makesure..

How many of B20B with b16 head without purge solenoid ? how does it run ?
now i am fully blocked by cable and heat-shrink so is air tight <==== i might done it wrong

please correct me if i am wrong

thanks