Dinan Supercharger efficiency upgrade, good to go.

[J.Belknap]

Vortech has (about a year ago) released the more efficient V-2 SQ Si-Trim Supercharger to replace the legacy V-2 SQ S-Trim Supercharger.

Here is Vortech's press release with relevant data.

The unit flows more air, and I was not sure if additional fueling was needed.

Here's the answer from Dinan:

Originally Posted by J.Belknap

It's about time that the Vortech V-2 was sent in for refreshing.

The word is that the head unit would be brought up to "Si-trim" specifications.

Will this increase in airflow require more fuel (duty-cycle, injector, or pump)? Or is the tune/fuel components conservative enough to allow for this?

Thanks!

Originally Posted by Dinancars

Vortech says the “Si-trim” impeller is a little more efficient than the “S-trim” impeller, which allowed them to raise the redline from 50,000rpm to 52,000 rpm (see attached). The kit on your car runs between 3500rpm - 35,000rpm. This is determined by engine rpm, the pulley ratios, and the step-up ratio inside the blower, none of which changes with the upgrade. In this moderate operating range, they’re not expecting any detectable performance difference, so no tuning modifications are needed. Safe to go for it!

Also, I've attached a supercharger comparison chart from Vortech.