Review on Boskavalo AA5E 9U465 AD Expedition Turbocharger Intercooler Valve by Christopher Kumar

There are two such BOVs on my car and one of them has a small tear in the diaphragm. I could hear air under the hood when I turned on the boost. I also only gain 9 or 10 pounds when I normally gain 18-20. That makes a big difference. BTW my BOVs are open to atmosphere so you might not notice a leak if yours is still closed on the intake side. I think factory is around £14 for OE.