Ok guys, just realised and confirmed with Steve that the intake they are using is 3" diameter and not 70mm diameter which is the normal diameter that the MAF calculates on. This means that the MAF is wrong on VCDS by 18% and the reading should be more like 390mg/s.
That means they are running somewhere in the region of 485bhp and they have only just started tuning!!!!!!!!!!
Can anyone check my calculations but this is what I've done......
Pi x radius squared = area of MAF
3.14 x (35mmx35mm) = 3846.5mm
2 for stock MAF size.
3.14 x (38.1mmx38.1mm) = 4558mm
2 for Statllers 3" intake size
4558/3846.5 = 1.184
or 18.4% increase in volume given that speed is constant.
This could prove very interesting from here on in