Hello,

I've got a running NON-VTEC F23A5 with a VTEC ECU (old vtec enginge broke so i used the ecu but changed the engine), but it doesn't go over 4000rpm and doesn't accelerate fine.
I've got the VTEC F23A1 valve head, will it fit if i swap it and put it over the non-vtec engine?
Are the valves the same? I've got the head and the camshaft.

Thanks!