can the ISV work with out the check valve?

[CarlosPTR210]

Hi,

I have my new FFI, but the supplier cut the ISV check valve and seal washer aluminum support.

Can work with out them?

 

[dbsupra90]

no it will not work right without it. boost will blow straight thru.

 

[3p141592654]

It will work fine until you boost. Then you will have an extra (small) BPV. The actual leak is pretty small though.