Hi everyone, I have a very annoying problem.
2002 TT 225 hp

Car was running great for a long time. It had an aftermarket blow off valve installed from previous owner. The original Recirculation valve was still attached to the intake air hose and the aftermaket one bypassed it and was attached to the turbo outlet hose and to the vaccum control hose. I removed the hoses and atteched them to the original valve end everything went in place as it should form the factory.
I started the engine and it stalled right after ignition. Tried multiple time and same result.
The weird thing is that when I disconnect the MAF the car starts and idles as it should normally. As soon as i connect the MAF the engine stalls.
I swapped the MAF from my friend's car (same model and working perfectly) but the result remained the same so its not the MAF.

Something went wrong during the swap and I just cant figure it out.

HELP!!