After a quick search on Evolution chips webby there looks to be 3 installers in Ireland , they may have the knowhow and correct equipment to check your afr,s? . I personally would constantly be afraid by not knowing exactly whats going on and would spoil the fun of it . Your doing the right thing by getting a wideband guage though and as Tabs said be careful if you do get an aftermarket FPR . A trip to the UK would no doubt be cheaper than a melted engine would be my way of thinking . You can get very good value for money with a setup by some of the best plus any other tweeks and checks that come with it