Hi guys... i need some advice as to what i should do for my civic... i currently have a 2005 honda coupe EX. the engine is a d17 no vtec and the mods that i have so far are just bolt ons (intake, headers, exhaust, racing spark plugs). i wanna know what else i can do with the engine that i currently have without having to do an engine swap... im aiming to make the car into a low 13 to a high 12 sec car. any advise is deeply appreciated.