Ok, i have a 2000 prelude, i just put in a vafc yesterday, set it up, worked fine, (didnt modify fuel curv, and left vtec point stock), everything was fine all day. then today, i got on the gas and the vto crossed the vtec over but vti didnt, (this worked fine yesterday), the car is performing like it is cold, of has low oil pressure. the stock ecu signal is not sending a vtec signal, and it is hitting a rev limiter at 7,000 rpms. so i checkd the oil, it was a quart low, i fixed that problem reset the ecu and vafc and it is still not working, im going to go get an oil change tomarow, but can anyone help, any ideas as to what is wrong, im really geting worried, thanks

 

Triple check all the wiring

 

For some reason sometimes, V-afc/s-afc like to reset them self. So you might wanna go to the etc menu and see if anything changes.