im gonna fix the FI on my S5 GTU and i wanna know if anything will cause to go on limp mode? like if you remove the emission stuff will cause it? thanks

 

The OMP failing will send it into limp mode. Other than that stuff will just mess up your mixture like your tps/thermosensor/tempsensor/afm being bad/off. If you remove the air pump/acv the 5th/6th ports and VDI will not function and you'll lose out on what most people consider 25hp. I believe thats about all you remove that affects power negatively.