Brian95SVT
Legend
I am a little confused by the differences in the vortech lines. just varies the sound and output possibilities?
Yes, basically that's true. There are some differences like the V3 is "self lubricated", like how Prochargers operate, meaning you don't have to run an oil line to the headunit from the oil pan. For the S-Trim and Si-Trim they are similar but like you said there are some differences in the amount of sound they make due to the change in technology and the Si-Trim units make more power and IIRC run more efficiently.
Once you start looking at say the T-Trim vs the Si-Trim obviously the T-Trim is rated to make more and that applies as you go up in headunits.
I hope this is what you were looking for in response to your question.