I have a stock B5 that I want to mod. I am starting by fixing the problem areas on the A4 (i.e timing belt, clutch, DV, K03......) you know the regulars. I noticed something that seemed odd for a turbo car, the vac reading at idle, after warming up, is 22 in/hg. Is this normal for the A4 or should I be looking for a contributing part failure? I have another B5 that is Under construction and I never took a vac/boost reading before I ripped it apart. Any info would be greatly appreciated.

 

Thats normal - nothing wrong

 

When the throttle is closed (foot off the fast pedal) you are going to get the highest vacuum level. This is normal.

 

Mine is low!!! I am at 11 when I am idleing

Josh

 

You have a vacuum leak or clogged air filter.

 

It's a leak. I just replaced my filter last night.

Josh

 

me too stupid leaks

 

How are you going to try and find them? What problems can that cause???

Josh

 

Mine settles at 25 when I idle. I thought it was super low, but the car runs great.

 

you car will run liek crap and you will either un rich or lean and screw things up even more