use the navigation links above to navigate this site

 

           

Welcome to the Sinister Performance website!

      

Northeastern Indiana's Custom Performance Automotive Specialists!

 

WE HAVE RECENTLY MOVED to Waterloo, Indiana

(please do not ship any packages to our old Fort Wayne address as we may not be able to get them)

 

    

We offer the following services for GM makes:

- Performance Modifications -

- Engine Swaps -

- Custom PCM and Chip Reprogramming -

 

We offer the following services for ALL makes:

- General Automotive Repair -

 

In addition to these services, we also offer information to help you improve your vehicle's performance available FREE on this website. 

Our facilities are located in Fort Wayne, Indiana.  If you have any questions or require our services, please email us at: sp1@gmtuners.com

 

Trouble accessing all of the features of this website?  Click here.

 

 


 

In Loving Memory of:

Roy F. Rath

1930 - 2007

US Navy - USS Coral Sea - Korean War Veteran

 

Privacy Policy

7.25.2017

All content on this site is COPYRIGHTED.

Sinister Performance, LLC. All rights reserved.