Since I installed my boost gauge I found my cars GIAC chip is not working properly. I am running about 6lbs or boost when it should be much higher. I called my local GIAC dealer and they said it sounds like my car is in limp mode. They are charging $42 to scan my cars ecu for errors. I know there can be a lot of things that trigger this mode but,does anyone have any idea what some common ones might be?

2001 A4 MAN FWD

 

Check all of your fuses, it might be your ecu fuse.

 

my car wen into limp mode last week because the Mass Air Flow/Waste Gate valve/and some other intake component fuse went out (they are all connected to one), so yeah check your fuses, the only thing is, limp mode is usually around 3 or 4 psi

 

I don't have a check engine light on either.... Maybe the N75 is bad? I checked the fuse box and didn't see any bad fuses.