well it's puzziling me when you tune your ecu what do they do and if you get like honda data is it more esay to be programeed. Like i get why you tune your ecu but preety much yeah. and is it only for turbo cars for ignition timing confused lol

 

I wouldn't recommend you tune an ECU yourself

Not only for turbos, but ones with mods that benefit from it (cams,valves,exhaust/header, etc)