Originally Posted by Slotegé

If you swap out the Intake you can hear the factory BOV.....

It sound's like a Turkey/Flutter

The car will run like shit If, you swap out to a VTA BOV like the HKS BOV without relocating the MAF to the cold pipe unless, you run a dual BPV/BOV setup.

First mod's that I would suggest would be:

Injen Intake
Corksport Full Exhaust
MBC or EBC @10psi
Colder NGK BKR7E-11 Plugs/what ever plugs you like.
DSMConvert/Split Second AFC
2001 Mazda 626 Intake Manifold w/ProtegeGarage EGR Tube
AWR MotorMount's or Another brand of MM
Boost Gauge
Upgraded Intercooler SMIC/FMIC

With those Mod's you would prolly be looking at 200+/-whp. just remember when you mod this car that it get's expensive real quick.....

Good Luck!