Yes, but you would need a remap to benefit from it. the ecu will retune the engine to the new spacer after which time you wont have much effect.
this was discussed not long ago.
viewtopic.php?f=114&t=38876&p=580258&hilit=plenum#p580258
Coming so far and some provisionals...
1. Zugara + Mrs Zugara.
2. Marcus (if I'm not working)
3. Gaz
4. SwanageDave + 1 might be missus,
5. Rog518
6. DoogyRev *provisional
7. Greg Warns
8. 3FIDDYZ
9. Ebized
10. Chris`I
11. Demon Z