Please let there be some1 who can help me no one in ireland seems to no anything! lol... I am currently completing a swap from 1.5 vtec ek3 civic to an f20b and have come across a problem running the f20b ecu it seems to be not revving out right, but when i try my old ecu it works fine have u any ideas what it could be? I thought it could be the knock sensor but i changd that and it is still the same!!!! I have done the IAVC and that is not the problem either, not getting any codes from f20b ecu, but i am gettin IAVC with the 1.5 ecu.