Horse Sense:NMRA racers should consider themselves lucky the sanction even permits the use of MSD's 7531 ignition box in ... sanctioned drag racing-banned 7531 from use in any of its categories ...

Back in the day, electronics referred to transbrakes, delay boxes, and throttle stops. With all due respect to the older crowd, in an era when 3,500-pound door slammers are running 7-second e.t ...

If you've watched any form of drag racing where turbochargers are involved ... Basically, it all boils down to ignition control. An aftermarket two-step rev limiter lets you set one (lower ...