no 2 turbo boost please help
 

so i just got a full engine rebuild that cost me a fortune... but the problem is at 4rpm i get not turbo boost... my mechanic assured me that evrything is 100% can please anyone help me!! any ideias, the car is no were near as fast than used to be!! any help would b much appreciated thanks.

This was posted in the wrong section and as such was buried in the moderation queue. I've moved it to the correct forum. If you still need help with it you should fare better now.

Let's start from the beginning, ok?

1. What is your model year?
2. Was it originally a TT?
3. Please list all modifications.
4. What have you done so far to troubleshoot.

Obviously, your mechanic isn't competent to diagnose a problem with the Mkiv's full sequential twin turbocharging system. Are you willing to learn what it takes to do that troubleshooting yourself? Be forewarned: it's a somewhat complex/intricate system. Here's what you can read, just to begin to scratch the surface of what you'll need to understand:
http://mkiv.com/93-98-twin-turbo-faqs-2/#turbosystem1
http://mkiv.com/93-98-twin-turbo-faqs-2/#apu1

If you don't have the time to pick all this up yourself, let us know and we'll try to locate a properly experienced and equipped mechanic for you to go see in your area (yes, we can even help you find someone in north Ireland!).