if its standard ( not remapped ) then it should work ok. Its meant to give a higher spike and hold the boost a bit longer up the rev range isn't it?
Are you sure that your current N75 i faulty?
Seriously, hand on heart, When I sold it to you, it was working perfectly on my car - I bought a new one because I thought mine may have been faulty but the new one and old one perfomed the same - my
problem was a faulty thermostat. It seems like your car is eating parts right now?
Pabs, I think the N75 can give more power, or at least more boost - don't forget the N75 controls the wastegate which basically controls how much boost the turbo is making. A different N75 could basically keep the WG closed longer meaning more boost - and if the car can handle it, that can mean more power.