hello,im kinda noobie but i did read everything
im driving honda city 3G vtec.

i wonder how you guys define high end revv thingy ?

does that mean if I drive from a certain RPM and above is consider high end ? Such as drive till RPM 4k-5k ? engine will spoil ? they said Vtec activated at 5k RPM something like this ?

Can someone explain to me more? thanks and regard

honda city 3G can dyno tune ar i wonder? can increase HP by how many you think and maybe the cost for doing so ?

kindly advise thanks