Chris'stransam

iTrader: (7)

So I have decided to go with a supercharger for my 390 build. Now what supercharger would u use ? I have been looken at f1a or ysi they flow the same witch one is better ? Witch one is louder ? I plan on 20 psi and limited to 8psi or so on the street with a wast gate.

Z-28

The least expensive one, if they both have the same boost level u need.

stevieturbo

Go with whichever kit has the best and most reliable bracket and belt drive system.

But I think a lot would say the YSi will perform better regardless of what the flow figures state.

+badss+

iTrader: (12)

F1A but I'm biased

js2fst

iTrader: (12)

Look at dynos and how many failures you hear about. I have had both. That is why I like procharger!

02gangsta/ss

procharger !!

phatasp

iTrader: (11)

I have a vortech that I like alot, that being said, if I had to do it over again I would probably go with a procharger for the availabilty of parts and service.