Dohc zc problems

[91 civic zc]

I just finished my 91 civic hb si painted and all it has a d16zc dohc in it not sure miles but it kind of cuts out at 5 grand and I'm not sure if they are vtec because I can not find the siloid so you know plz help thanks

 

[jlicrx]

the DOHC ZC is not VTEC

what ECU is in it? - any codes showing on the ECU?

 

[phunky.buddha]

Guessing he's running a VTEC ECU.