Yes aftermarket ECU first then other mods like 3" dump into a 3" cat than 2 1/2" mandrel pipe back to a 3" straight through muffler at the rear , Get the CT26 HiFlowed with a 50mm comp wheel and a exhaust housing off a 7MGTE CT26 or to save some money you can pick up a good CT26 off a 7MGTE they have a 47mm comp wheel compared to the 165 which has a 40mm comp wheel and fit a good reliable water injection system , This combination will easily give you what you want .