8l Tfsi boosting problem

[S3 OKR]

I brought my car few weeks ago and have had this problem.
Is a Audi S3 8l With A 2.0tfsi Engine From s3 8p.
I'm having a problem with it boosting. The car is Revo stage 2+ I know this because my mate first had the engine in his mk2 golf.
The car feels like it has no power at all, can someone help me with what it can be.
I have Tryed to plug Vagcom in but its not letting me talk to the engine. This is another problem, I have spoken to the guy who done the loom and he will get back to me.
If anyone can help me that would be great
Thanks..
Here's a few pictures of the car

 

[syncro]

I have a 2009 cr170 tdi in my s3 and had to run can wires from the diagnostic socket to get the vag com to work because the newer ecus do not use the k-line for diagnostics

 

[Veedubnoodle]

The Revo map may have reverted back to its base settings (ie: boost - 0 etc.) if the battery was disconnected.

P.S. That is an awesome conversion!

 

[myke]

can you access any other modules or is it just the engine ? if non, can bus error, if you need pinouts for canbus wires from your ecu let me know and I will dig them out, what ecu numbers?

 

[S3 OKR]

Thanks Lads. I went with the Qpeng loom. All is fixed and car is boosting as it should. I can say it's .