DOHC i-VTEC or DOHC VTEC better?

[aaronng]

in the newer versions of honda the dohc i-vtec engines you get 2 types of vtec. there is the "power vtec" in the k24 engine in the euro for example, and the "economy vtec" found in the k20 engine in the euro also.
the k24 engine in the euro has got a very similiar vtec system to the older dohc vtec engines but with cool things like the vtc added and the k20 engines in the euro and other(crv, us accord and civic si) have similar systems to the vtec-e found in the 92-95 vei 1.5l and vtec-II found in the 96-00 lsi 1.5l sohc engines.
the newer engines have the vtc added so it´s more economical and more torquey through out the rev range.

Civic Si has the DC5R engine.

No, the K-series does not have VTEC-E. There is only ONE type of VTEC in the K-series. The only difference is that the Accord, Integra Luxury and CRV's engine have VTEC only on the intake cam. The Euro, DC5R, DC5S, CTR have VTEC on both the intake and exhaust cams.