I'm putting twins on my truck and have choice between 2 S475s, one is a 1.10 housing and the other a 1.32 I belive. The 1.10 housing will save me $200, but I was concerned about size. Will the 1.10 housing be big enough? I would imagine these twins would spool up very very fast, but might lack on the top end. And how much power is left on the table going from a 1.32 to a 1.10? Any ideas?

 

go big you wont have a problem lighting that charger

 

What I need to know is will it be worth the money, how much power do you gain going from a 1.10 to a 1.32? I'm not worried about spooling it up....

 

The AR 1.10 is going to have higher drive pressure on top end but it will spool quicker and the AR 1.32 is going to spool slower but have lower drive pressure on the top end. HTT recommends one with a AR of 1.25

 

go 1.32....................................