When going to a true non-seq 3 gen, do you have to keep both blow off valves or can you cap and eliminate one? I have see them both ways.

Thanks

 

The rear valve is not a BOV in the normal sense. It allows #2 turbo spool-up air flow out since it has no where else to go. It closes when the #2 turbo comes on line.

Some non-seq people connect up to the UIM as a second BOV. It is not really needed. Take it off and cap the pipe.

 

Thanks, I will remove and cap.