ive been thinking about doing an ex swap cylinder head with my lx.. but not really sure if its worth it. ive searched for videos, the 7th generation civic ex's with vtec, but you can barley hear the vtec kicking in? is vtec not as audible as it is.. say older civics??

 

the vtec in our cars is the vtec-e...its the retarded economic cousin of vtec...search for more info

 

huh. i searched it, so vtec e doesnt just kick in at 4500 rpms? it just gives it more power in lower rpms?
can you swap any heads with d series motors?

 

its worth it if your building the motor. if not dont bother. vtec depends on rpms and throttle position and i think afr too. no other heads are directly interchangable

 

EX's do not have VTEC-E, HX's do. It is "conventional" VTEC (as conventional as crappy SOHC VTEC can be) however it kicks in at 2600RPM, it's meant to improve low end torque not high end power. The head DOES flow better, but unless you get it for cheap it's really not worth the investment.