p70 & oil vtec oil pressure switch
 

now i bought zc engine . it came with p70 small case ecu . the engine has no vtec pressure switch.
i will use p28 in this engine ., and the p28 has vtec oil pressure switch

so what is the best to do :

1- disable the sensore from crome ., and i read it may be the cel will jump because its a routine operation

2- buy a sensor and wire it and install it in zc

?