Hey guys i was wondering if an apexi vafc is worth the hassle. I hear they are hard to use and that sometimes it messes up everything. I just want to know if it is worth the money and the effort? Also how do they work. I just want to change my vtec engaugement b/c it dont kick in till 6000 rpm and i heard that the only way you can change this is to get a vafc. And one more question?, if i got a new ecu would that change the vtec engaugement point? thank you