After 1/4 mile racing dozens of cars over the past 25 years I'd say the Roto-Fab added approx 10RWHP to my bone stock 1,100 mile 2017 ZR1 A10.
It added a bit more blower whine, but overall not too sure if it was really worth almost $500.
Seems as if all auto parts vendors over the past decade recession are using fantasy dyno numbers in hopes guys like us will help them out of their financial crisis.
