Loss of boost

[180bfj20det]

Hey guys,

I have been running 12 psi on my car for a couple of weeks now. In the last couple of days, my car hits peak boost at around 3500rpm then drops of 1000rpm later to 10 psi where it stays. Before it used to hold 12psi all the way. What's going on (sounds like turbo wines before making boost and coming off boost)?

Oil pressure fine!

[spikeman900]

hey man, im not really stacked up on knowledge, but what are you running your boost through? Cause if its a bleed valve, i think your boost might be 'spiking',

If you have one installed, have you thought of that?

hope goes well