ECM Update for Green Flag Sprint Cars

Along with the new tune for your sprint car, there are a couple of other procedures that must be done.  First, remove the breather filter found on the back of the intake manifold and replace it with the supplied ½” vacuum cap.  A zip tie can be used for added security.

Second, remove the throttle body and drill the hole to 17/64” or ¼” if you don’t have the 17/64^th drill.

  Finally, de-bur the edges of the drilled hole, being careful not to increase the size of the actual hole.  Remove all loose chips before re-installing throttle body on engine.

  These changes are critical to having a proper starting and idling engine.