i am confusing about this.when is the vtec opens?i got F23A4....however, i don't know when is my vtec opens, and how can i know ???by hearing or by feeling?

 

both you wont typically here it in accord so much as you would a gsr! but its still there. i know that on most b series vtec kicks in at 5200 to 5500. try to feel around there as i dont know for and accord

 

do you have any mods? you can defintly hear it with an intake. its somewhere around 4500-4700rpms. its not going to throw you back in your seat but the car will start to move a little better.

 

is it really 45 to 47 in an accord?

 

Being what it's designed for and the fact the accord isn't a sporty car i'd say thats about right..........

 

what b16ahybrid said plus the redline is somewhere near 6 grand.

 

well...from personal experience, it's not all that impressive as some people have stated, but it'll go a bit smoother, it'll have a tad of umph, and it's ready to get going as opposed to before vtec where you feel like you have to beat the shit out of it for it to get anywhere...

 

what do you expect? its an accord. :reechy:

 

hook up a light to the vtec solenoid or you can use a voltmeter. 1 wire to the solenoid wire and the other to ground, when the solenoid receives power to engage vtec, you will have voltage and the light or meter will indicate it. btw you must be going 25 mph+ for vtec to engage