hi, i made friends with this mechanic boss....he introduced mi to something called retuning the ecu and doing a dyno also providing a dyno chart...so would like to know wat the typical cost for all these....and yeah he was very keen to show me....also showing mi charts of torque and hp gained....which is of course done by retuning the ecu using a computer...and i told him i would intro any friends if interested...however i would like to know wat the cost