Expected HP gains

[87regal]

What is the real world HP gains from say a 3.4 pulley and homemade( 3 1/2 to 4") CAI. (1 range colder plugs, and probably a 180 T-stat to be safe)

Also from a 3.25 pulley and the same homemade CAI.

Can the 3.25 be used on a daily driver, at what size pulley will you need to worry about an AFPR?

 

[TRYMY231S]

Low 14's from the first combo, high to mid 13's on the second. I use my 3.25 as a daily pulley. I've found I run worse with an AFPR, I just got a MAFT+ so I could pull timing as well to prevent KR.