Your mate will have to get it mapped, not remapped
as you can't on the older cars.

You have two options get a Scoobyecu from Scott Taylor (Via ebay)
and give him your cars spec, he will then provide a chip to suit the cars
current state of tune, or...
go for a full replacement ECU such as the Apexi Power FC.

The FC is a stand alone unit and has multiple mapping points, so in the
long run if you decide to take the car to another level it can quite easily
be done.

Speak to Pavlo (Paul Balamire @ Zen Performance)
He will provide and map for £800 + VAT (Include Commander)


personally I think your mate has opened a can of worms unless he's willing to spend money.