My new SXE10 Altezza

[stoffa]

I've just swapped my WRX for an Altezza 6 speed 3s-ge, Im pretty DIY and going to a mates workshop tomorrow to give it a service and check the fault codes. Is there anything I should check out while its got the diagnostic computer plugged in? From what I understand the MAF and O2 sensor need to be working well the the car to be economical.

I'll also be cleaning the MAF and probably change the gearbox fluid, the diff has leaky seal so wont change that till after the seals have shown up.

I've ordered a workshop manual but it hasn't shown up yet.