Supercharger stall?

[Niall]

Right this might sound really strange and I'm pretty sure i know what it is but just want to check.

Ive fitted my new charger plate and relocated my recirc valve (with a much longer run back to the charger) and am now seeing 6psi (2 more than before). Good news yes. Bad news is if i come off the throttle at highish revs/boost (above 4k), i get a nice chirp from the engine bay which sounds like a momentary belt squeak. My guess is the recirc valve isn't big enough allowing pressure to build up and try and stall the charger. Am i right here or is my charger just f*cked? lol
Its not the engine as I've had the belt off and that runs nice and silent so I'm happy its not about to go bang but i know these chargers don't last 5 minutes when they back up so want to find out if it is that so i can get it sorted. If so, extra recirc valve i suppose?

[kentiiboii]

It's f*cked, scrap it ans start again!

[Grant]

Why not fit the bigger recirc valve you have and see if that fixes it, before going ahead and fitting another?

[RetroPug]

My guess would be the same as yours Niall, a pressure build up as you come off the throttle.

[Paul_13]

The aux belt proper tight around the charger pulley?

[Niall]

The aux belt proper tight around the charger pulley?

Well its as tight as its always been. Slightly tighter than your average aux belt set up

[Grant]

Its a new belt. Have you tightened it back up enough? Could have stretched bit. On a standard system you probably wouldn't notice it, but yours is, err, not standard? lol