Could i benefit anything from setting vtec engagement at a low rpm setting? and is there any way to get a sound of a dohc vtec from a sohc or at least be able to here it

 

Nope. And Nope.

First, Honda spent a lot of money to figure out where to set the VTEC point at. Leave it there.

Second, DOHC sound louder because both the intake and exhaust sides open up. The SOHC only open up the intake side. Sorry, your stuck with what you have unless you want to swap a DOHC in there. An intake will help a bit, but nothing like what you are wanting I dont think.

 

you'd just be wasting gas

 

Not on an untuned ECU.