i used to have a unichip type A on my 99 gt, bought it secondhand (with the boost moduole) for $350, installed and tuned by tim slako at west racing for $550, with a vf-22 it went alright, pushed about 170-180 kw atw, blew a bit of smoke as was a pretty rich tune, despite what everyone else says i couldn't really fault the tune & was happy with the service and backup support for the money it cost me

just keep your afm clean and you should have no drama's, & if you want a better air filter go an apexi dry panel or power-intake pod, stay well clean of any k&n oiled panel or pod filters as they will kill your afm