had a similar issue with my 92 integra. in the end had to take it to my mechanic to get it resolved. quite a high labor cost also. but finally have my nice integra working again.

 

94 and 95 f22b1's had vtec oil pressure switches under the solenoid take that sensor out of your old engine then take the plug out of your new engine and put the sensor there. You have to run two wires to you harness to make the switch work. Follow the wires in your old harness to figure out where to put them in the new harness. Or swap to a newer obdII computer. I swapped to a 96 engine in my 94 and had this same problem.

 

i have a 94 EX it was Auto i put a f22 tranny on it running stock auto computer and harness...

no power wont rev past 5 like OP

how can i fix this? its the Vtec Solenoid? or is it something with the switch?

is there any easy fix to keep the auto computer or should i get a 5spd ECU and then wire it?

 

Everytime I make an automatic to manual you have to disconnect the transmission control module and replace the computer with a manual computer because the exactly what happen to me with a auto computer ones you install the manual computer you'll see a big difference _