I did back to back tests on the same day back when I was running 8.40’s in my Daytona and saw nothing. And that was before I started running an alternator.

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time