i only rang these gays because my boss is mapping mad and thinks its the only way so i thought just call and get a price i will definitely will be buying the chip off eBay mapping is not a option on the 16v golf it seems.
Mapping IS an option.
You need to find the right person and have the need for it.
You don't have the need frankly...a mildly ported head and TB aren't going to add much anyway, so an ebay chip will be fine.
If you were running high compression, big cams or odd cam combinations, need very specific rev limits or have a seriously modified head, then a custom map will give more gains - but you need to find someone who can map with an emulator, then burn a EPROM to custom parameters.
I know, because I have had that exact work done...so know it can be done.
The bottom line is, youe engine doesn't need or warrant it...so throw in an ebay EPROM and live with the 5BHP or so gain.