Just picked up my 276.
What can be done to up it's "go" a little?
What does a map give? directions?
sorry couldn't resist.
in simple terms; Zed is very expensive to tune very little out of it if you stay NA; if you want big increase go FI
not all 276bhp models actually started with anywhere near that to begin with, lots were found to be under powered. so you may find that after the tune you get alot better but maybe not where you thought you would get.
personally i'd do the exhaust and filter, get it remapped and then spend the cash on suspension, decent tyres and advanced driving lessons.