If you’ve ever seen a rally car or a really fast import launch at a drag strip, nearly everything about it seems wrong and violent in the worst way. To the uninitiated they might even think something was terribly wrong with the tune-up. But there is a method to this madness. And it is called anti-lag.
While turbo technology has grown by leaps and bounds in the past 8-10 years, there is an inherent lag, particularly as we use larger turbos and higher boost levels that make it difficult to sixty-foot like a nitrous car. The most often used method employed by anti-lag systems, responsible for that trademark popping and banging, is basically a controlled misfire. In the process fuel and air find their way through the headers, which is ignited in the pipes and keeps the turbine spinning. Often you’ll see these cars shooting flames out in the process. It’s pretty awesome. The only down side is, of course, that this can potentially be very hard on the turbo, particularly if you are staged for quite a while, and forget about catalytic converters.
To that end, Lingenfelter Performance Engineering incorporated anti-lag into its new LNC-2000 Adjustable RPM Limiter & Timing Retard Control (PN L460145297). In a nutshell, this handy little box augments your factory or aftermarket ECM with a two-step rev limiter and timing retard. While the LNC-2000 is certainly useful in a supercharged (LNC-2001 is a plug-in for LSA/LS9) or nitrous application, with a turbo setup it can retard up to 15-degrees of timing to let fuel and air pass through the engine and combust in the hot pipes. There is even a 3-bar MAP sensor input to help control the amount of spark retard. Watch this demonstration on one of Phastek Performance’s turbo fifth-gen builds.