If the BOV is before the MAF you want a lighter spring so you get fastest reaction. The new location also requires a softer spring as its about 5 feet (vacuum line from the IM to the BOV) from the vacuum source. Anything more than 3 ft from the vacuum source and you want a step softer. With the new location there should be no issue with the MAF being open or closed.
There are no leaks. I pressure tested it up to 15psi. When the pipes were swapped I went over every couplers before the bumper went back on to ensure proper sealing at the beads.
Tuners input would be great
The BOV went from here
to here
Some info from Tial
