Got a 95 Z28 that was given to me, it has a Vortech V1 kit installed but has no boost. Thought it might be a simple issue of a clogged map sensor as it is consuming a little oil, but no such luck.

Car is a A4, stock other than the SC and has roughly 130,000 miles on it.

Any tips.

 

first thing id check for...not to make ya sound like an idiot...

is make sure the belt is there,and tight.

second,check the boost tubes,make sure one didnt blow off,or come loose

 

I'll assume your looking for boost on a boost gauge. Is the line on the boost gauge hooked up?

Ken R.

 

They system uses a bypass valve, if this valve is faulty or the vacuum line going to the valve is faulty, the engine won't go into boost.

 

Are you reading the map sensor with a laptop? Of course it won't show boost....

How have you determined you are not building boost?

 

I'm getting no boost because the car isn't going like a bat out of hell and I get no whine from the blower itself. I need to get the car up on the rack and inspect the belt, but I'm starting to lean towards boost control valve.

 

If you don't hear a little whine, then the blower is not spinning (or it's just an SQ model and is quiet). Make sure the belt is even on it. Or install a boost gauge.

 

I spent some time last night checking things out. The belt does need to be replaced, but it was still tight. The big problem was the bypass valve had failed.