The stock setup uses cold air intake -- how are you planning to

improve on it (just curious)? Also, the intake flows enough

air for the turbo models so it easily flows enough air for

non-turbo models. Is your's a turbo?

I doubt you will see any improvement since Volvo engineers have

done a pretty good job of tuning the intake (they have

supercomputers for doing all those fluid dynamics calculations

so the factory design will be hard to beat).