This is How i Did it.
$10 A Week For Each Car for WOF And Rego (Roughly)
200kms (Weekend Driving?) In A WRX Per Tank (Roughly) $60 a week??
600Kms In A daily Driver $80 Per Tank per Week
Every Two months a Oil Change in Daily $80? = $10 A Week
Every 4 Months Oil Chance In WRX $100 = $5 A Week
Add In Tires, Repairs, General Maintence
Daily Driver Would Cost $100 To Run A Week
WRX Would Cost $70 A Week Also as A Weekend Toy.
Have had a few friends tune at NZEFI, All with GREAT results, bearing in mind they all had the whole lot of mods that were ever going to be done, DONE and run in before they went there. which IMO makes a huge difference, no point in going there with 440cc injectors then going back for a re-tune on 800c injectors. TBH i wouldnt go many other places than NZEFI.