Factory Pro velocity stacks 2nd gen SV

Does anybody use them? Any noticeably improvements?

 

I'm sure Factory has a dyno sheet they can show you, they don't make junk, it all works.

 

They do, I was just wondering if anybody on here had tried them.

 

How does a velocity stack actually work? It just looks like it makes the intake track longer.

 

Wouldn't it just move your powerband around? Longer intake tracts should thoeretically just make mid-range power better at the expense of top end, no?

 

According to Factory Pro they add 2 - 4 HPT on the midrange, and a little bit on the top. I'd like to try them, but was hoping somebody else has already made the investment.

 

how much are they?

 

$130.

 

Superstock legal? As i RTFRB it looks as if they are. It isn't changing the airbox. Am i interpreting it correctly? Just want to clarify.

"The OEM air box must be used and an OEM type filter must be properly installed (a K&N style direct replacement filter is an acceptable OEM type). The only modification allowed is the sealing of airbox drains."

Will the OEM style air filter still fin over them?

I assume you need to re-map after adding these, right?

 

I'm sure they are illegal for Superstock.:tut:

 

I'm guessing no. Based on the statement above, and the fact that if it is not stated in writing, it is not allowed.:tut: