i have a 2001 accord with a 2.3 v-tec ulev engine
i did some research on installing a 2.3 v-tec only engine,
and a source said it would work,
well the engine is from japan, i used my intake and exhaust manifolds,
used my dist, and vvt selinoid
i installed a new timing belt
it idles and wont rev up
code p1399 p0300 301 302 303 304
any ideas?

 

I don't think there's much difference between the ULEV and non-ULEV models. Likely a modified camshaft or ECU tuning - not worth swapping the engine out for IMO. Though it sounds like you already have.

Given that you have misfire codes and can't rev the engine I'm guessing your problem is maybe the crank-position sensor? (only a WAG though) Are you using the ULEV ECU with the non-ULEV engine? Does nothing happen when you give it gas or does it run rougher?

 

I'm on the problem the throttle position sensor and the map sensor connectors are the same I swaddled connectors everything's fine