No you wont run rich. But be fore warned that if you have that res in your intake system, that you need to cap it off or remove it from the car.

 

did diode mod and the car runs great. Much better at 14 psi. Cranked it up to 18 psi and it runs great at that too. Thank you guys/gals. Now I just need abigger turbo..........

 

glad you like the extra power.

 

I forgot to tell you that it is a zener diode, not a zennerand there is two part numbers for it 1) 1N4731A 2) NTE568A . Also when hooking up the diode on a 01' A4 Quattro the stripe part of the diode needs to be toward the blue wire. If it is the other way it throws a check engine light.

 

if its the other way, the car will start and stumble.
So many people have read that and didnt notice my typo