Supposedly tuning your car can improve hp and what not. How much hp and money would this be

 

depends if you buy the software and tune it yourself. or have someone tune it for you. tunes normally run from 200-300

 

get someone to do it like software. whats the hp gain?

 

depends on the mods. tuning on a stock car will provide maybe 5-10. MAYBE. but its best to have mods that will help that tune. or a tune that will help your mods. like say you have an intake, header, dp, exhaust. you will see more gains with that and a tune than you will with just a tune. pretty self explanitory

 

with a tune, can you still run regular fuel??

Dimitri

 

if you want to, yes
you can tune for premium fuel which will net you a few extra ponies - but it will cost a few extra pennies at the gas station

 

or quarters or dollars depending on where you live...