Motor City Viper Owners and Great Lakes Cobra Club Dyno Days at Prefix

Dick Winkles from the MCVO has arranged 2 dyno days at Prefix.  The “official” Dyno Day is Saturday October 6th, but they are also offering a second day, Friday October 5th.  Prefix is confident they can handle about 8 cars per day.


Prefix, 3500 Joslyn Road, Auburn Hills.  Click here for directions.

Dates and Costs:

Friday, October 5th at $100 per vehicle.

Saturday, October 6th at $125 per vehicle.

Each vehicle will get 3 pulls and there is an 8 car maximum per day.

This is a Viper and Cobra Members event only given the limited availability of time slots.

We understand that each owner does not want to sit around all day, waiting for their turn.  Our coordinator, Dick Winkles, has offered to create time slots, and assign each member to an approximate slice of time.  He recommends you come in about 30 minutes ahead of your start time.

To sign up click here for Friday or here for Saturday.  The deadline for signup is September 30th. Once you have signed-up, please contact Dick (via email at and let him know what day you would like to attend and your preferred times slots (1st choice, 2nd choice and 3rd choice) between 8:00AM and 4:00PM on that day.

Spectators are welcome, but ear protection is required.

The event coordinator is Dick Winkles and he can be reached at (248) 379-1265