Hopefully someone could help me out with this.

I have a Greddy Boost/Vacuum Meter and every time i accl. it should show boost but it shows vacuum until i let go of the accl. and then it shows boost for a second. i have felt that the performance of my car has gone down so i know that there is a problem.

Things that i have checked
New TPS
New AFM
New Plugs
Injectors
Fuel Pressure 41-43
BOV

what i have
Red Top SR
Walbro Fuel Pump
Greddy Front Mount
Greddy BOV Atmos
Stock Turbo and Engine
APEXI Timer
Greddy Boost/Vacuum Warning Gauge
Greddy Pressure Regultor
Greedy Boost Controller ( Not Connected)
3 Inch all the way back
Greedy Dump pipe

Please help if you can suggestions or anything
thanks for reading and advise

 

does it bog down or anything like that? wastegate could be stuck open or you could have a bad boost leak

 

doesn't really bog down but just doesn't feel like it pulls

 

do a boost leak test, sounds like ur problem..