I need some input for choosing from HKS drop-in filter with OEM box and Cobb/Perrin turbo inlet or AEM intake box! Which has better power or/and quicker response?
Thank you!!!

 

I've kind of been wondering this too...

 

HKS filter is garbage unless they've revised it, it is known to cause MAF issues. I run and recommend the Cosworth panel filter. I've also run the WORKS, but replaced with the Cosworth as the Cosworth filter doesn't need oil and is about half the price of the WORKS at ~$55.

 

Go get a full cold air intake or intake kit for that matter. That way you'll see good gains and no need to upgrade later once the mod bug bites.

 

Get a real intake, ditch the restrictive boxes.