its pretty hard to notice sohc stock vtec engagement but if u run your car to full redline in 1st gear straight to second n your still ate 5000 rpms its cuz your vtec is working properly if your vtec didnt work u'd drop all the way to 4000 rpms like a y7

 

some say they dont here it really but if u lissn for it u can here it lissn to this video around 5500 rpms u can here this guys n he is stock so your noise is there u just havnt paid attention :P
http://www.youtube.com/watch?v=mJO9T8_b-l8

 

http://www.youtube.com/watch?v=b6fyJ...eature=related compare this video its a stock y8 to the video below stock y7 http://www.youtube.com/watch?v=53UCh...eature=related uall here difference n next time u hit vtec in your car uall here it trust me

 

your d15b will cuz the ecu will make it haha :P im just so bored tonight over here posting lik 3 videos haha i love it im trying to up load pics of my coupe but wont let me. i dnt have any vids of my car but i have some on facebook if u hav a account?

 

i added you man. n i figured those videos would help u notice the noise that u never noticed before lol

 

did u adjust the throttle cable good enuff so the throttle opens completly?

 

Hmm that's not good, VTEC should be smooth.