2/1/2006



The NHRA Technical department will require that certain wires must be removed from all MSD 7530T ignition systems used in Pro Stock competition.

Beginning at the CARQUEST Auto Parts NHRA Winternationals, all MSD 7530T ignition systems must have the three retard wires (pink, tan, and violet) and the Points input wire (white) clearly disconnected to disarm the wires from any connection or perceived connection to any other part of the vehicle.

Additional stages in this process may be implemented at a further time by NHRA.

 

I'm assuming that's the Digital 7 they're referring to. It has a nice "traction control" function taht I believe is not allowed in certain classes. Basically you can program a maximum engine acceleration rate(2000 RPM/SEC for example), so when the tires spin, the engine accelerates too quickly, and the box retards timing to stop the spin.

 

Handicap sports are stupid.
Run what you brung bitches

 

Ok, that makes sense. I couldn't figure why they were not allowing timing retard.

I wonder if pro-stock guys were using it, and tech just figured it out?

 

Wonder if my 685 can do that.

 

You only need to worry about it if in fact you can actually spin the tires.

 

Did I miss something? How is this related to the subject being discussed?

 

I can asure you I have no problem spinning the tires.