Hi mate those pipes do look way to small ,i would look for an intercooler kit with 2.5" piping for a bam ,im running 2 1/4" but only got ko3
I ran 2.25" pipework on my S3 with a K04, and it managed 275BHP/330lb-ft just fine...so I'd argue that 2.0/2.25" isnt way too small.
Larger pipework = more lag.
Have you looked at the size of the compressor on a K04?
Have you seen the size of the standar AMK/BAM plastic charge pipe just before the TB?
Oh...and that's where the MAP sits on a BAM/AMK...in the black plastic charge pipe from the IC to the TB.