That is still very controversial. Honestly, gains with CAI or SRI alone arent impressive or that noticeable.
But most people do it as part of a list of bolt-ons to increase
total power. Not too mention a tune alone, like with a basic stock COBB AP map for 91 oct & CAI would most certainly make a difference.
Remember CAI will make the difference in the higher end of the power band, while SRI will make the more immediate gains in the low end. That part comes down to preference. And a very minor aspect of intake is sound, some people (like hybrid BPVs) spend simply for more aggressive sound. But ultimately, i haven't seen any real word testing numbers, papers, charts comparing SRI vs CAI vs STOCK. THAT would be interesting in terms of overall performance numbers & EFFICIENCY coupled with several other bolt-ons.
As far as i know the stock intake isn't all that restrictive in terms of volume of air intake, i believe it is more to do with efficiency. Heat soak, consistency of air flow, turbulence issues perhaps (accordion tubing, ugh!)... the pro's might wanna chime in.
Id say run the stock intake with some data logging on a dashhawk or AP, coupled with all your other mods and perhaps a tune. Then do the same for the cold air. im sure you will see increased power gains, a bit, but the overall AFR, intake temps, after turbo temps, knock, mileage etc etc are what id be more curious about.
let us know!
