[SPCorBUST]

Couldn't we use the Perrin BOV?

For cars that require recirculating blow off valves, it is vital that it recirculates the air back to the intake track to maintain proper air-fuel ratio and driveability between shifts.

For cars that can utilize vent to atmosphere blow off valves, this can be set up as a vent to atmosphere style blow off valve. We only recommend that on cars running aftermarket Speed Density type tunes (cars without mass airflow sensor).

If you're running an SD-only tune (perhaps from Delicious Tuning?) maybe you could just disconnect the MAF, block off the hole and set the BOV to atmosphere. Anything else, just run the BOV in recirculate mode.

I'm still setting things up for a custom tune anyway, so if that sounds doable, maybe I can try it since it fits with my build.