Adding to this thread since it is recent and in target. The volute doesn't need to be turned for the si impeller upgrade, correct? The opening is 3.33" and narrows to 3.02" at the impeller. I know some of them need the volute to be opened up but looking for confirmation that's not the case with this impeller upgrade.
Also, does anyone have any pics of the impellers. Either stock Vortech or even better the Si trim upgraded one? Want to do a direct comparison.
Thanks, appreciate it
