Hello again, So Ive gotten a boost gauge for my 2001 Audi TT Quattro 180hp (because Audi didn't put one in their sports car for some reason) I got an APR boost gauge (paid way too much for it). I connected the wires as follows:
- ground to the body of the car
- 12 v switched to the instrument cluster
- 12 v illumination on the head light switch
-Also I put a "T" on the Fuel Pressure Regulator

So my problem is that my car is stock but the gauge says im peaking at about 20 psi. What would be my problem? From what I've read I should only getting about 7 psi on the stock turbo.