I haven't put it on dyno yet.
After I Turboed the car, the clutch was slipping. Shortly after that I had starting issues, turned out to be a faulty MAF. Currently I took it off Road to finish off a few issues. It should be on road soon.
I was lucky I only had to buy the AEM, I wired it myself, and a friend of mine did a base map for me until I get to the dyno. So far I just paid for AEM. I think they are about £270. I bought mine about 2 years ago. I have known people to have HKS GOLD installed. It is all about finding someone to tune it for you. You can also go with Nistune, but software is purchased separately.
The cost varies with the setup.
You can do it on the cheap for about £600. I think Frank managed something similar to this on his early setup.
If you can weld yourself you can save a lot of money on Manifold and exhaust piping.
You need to control fuelling which is done one of two ways,
1. ECU (piggy back or Nistune £450 Includes Tuning etc)
2. Manual method with a rising rate regulator and an extra injector tapped into manifold. Should get away with a rising rate regulator on low boost setup.
Let me know if you need more detail about costs of the complete setup. I will break it all down for you.