Toby, this is not directed at u, glad u are happy I am
Just showing a genuine interest so I can choose the direction of my car (without pointless input from r tech bum boys)
Seems r tech are the only people in the world who can get a K04 past 300
I'll get the manifold for my low powered mk3 
Maybe this is the only k04 with this unique setup 80mmTIP Relentless manifold and DP on a large port head. Please find me another build thread with exact same spec setup?
If it was not for the manifold and 3"DP then the mumbers would be my usual of 270-280bhp..... If running 2" chrage pipes then power would be closer to 240bhp or 2.25" pipes 265bhp.
Its NOT the tuner or map which have managed to crack 300bhp its the combintation if every high flow part on the car.
High flow Head
High Flow Inlet
High flow exhaust manifold
2.5" Charge Pipes
2.5" FMIC Core
3" Down pipe
Over on SCN the same setup is getting 290bhp on the small port BAM heads.... without custom mapping.
Can people stop looking at this as just a k04 making the power on its own merits.
The K04 will not make over 285bhp on generic setups parts and OEM manifold...
so with the same set up on a bam with your map what could u expect 
Nobody knows yet dude, there are 4 tuners who I know all working on projects like this right now and wanting to be the first to get the BAM/AMK results before everyone else.... I can see it being 295-300bhp
I was the first tuner to do this setup on the AGU m3.8 ECU. The only limiting factors with BAM and AKM is flow via the inlet and head v the AGU.
This the engines increased volumetric efficiency and flow which is making the k04 turbos produce such good numbers, its not the tuner bullsh!tting number..
There are claim on the SCN forum that just there stage2 maps are hitting 309bhp 340lbft @1.8bar on the stock turbo and manifold... These are your BS k04 numbers as at 280bhp the stock manifold EGTs are 980deg not matter what fuel stratergy is used.
All I can say to you DO it!!! even if I dont map your car and you get another tuner to tune your car and I am 1000% you will get some awesome results... You could go to town and fit the AGU head.
It just one member who reads between the lines on a very bias froum clubgti where only people who pay to sponsor can dictate, but its not going to be long before one of the clubgti sponsors publish his numbers with the manifold... and i bet the same person on this forum wont stir the sh!t on there...lol