There's a good post on a question asked on
www.promodzone.com regarding the 7 Dig. We us ethe 7531 in our Pro Mod car and it will serve as a nitrous controler and has done track retards and traction control which is unnessecary in a .90 car and illegal in everything else. I have a 7AL in my SG car and it's ok and no real trouble but I have a Mallory 7C Digital in may Sc Dragster and I've had one in my last Dragster and it is miles ahead of everything else. I can change my starting line in one second in the waterbox if I want. My shift point retard,start retard all right there from the drivers seat in seconds. I will probably put one in the SG roadster this winter because it is head and shoulders over them all and we sell them all.