Rob Dahm posted a video of his 3 Rotor RX7 literally scaring people at the track.
When you’re standing trackside at any dragstrip you’d better be prepared keep your wits about you as very powerful cars launching feet from where you’re standing poses risks unique to dragracing. Earlier yesterday (Sept. 17, 2015) Youtuber and all around renaissance man Rob Dahm uploaded a video of his 3 Rotor RX7 literally scaring people off their feet as he practiced his dragstrip launch in his Mazda. Little did these track-goers know, but his Mazda was outfitted with a two-step anti-lag system that when initiated from a launch, backfires violently causing all sorts of sound and noise that would scare almost anyone who wasn’t paying attention. Check out the video below and be warned, you’d better not be wearing earphones.
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This particular Mazda RX-7 is pretty special. Originally equipped with an OEM twin rotor setup, the previous owner went ahead and swapped in a 3 Rotor setup originally found in the JDM Spec Eunos Cosmos. As you can imagine, the three rotor setup increased power significantly, but not by much. After slapping on an 80mm Borg Warner S480 turbo and copious amounts of professional tuning, this Mazda RX-7 makes upwards of 600 HP on close to 14.7 psi alone. Rob Dahm graciously uploaded an FAQ video of sorts highlighting his RX-7, which we’ve posted below.
Two step anti-lag systems work by first limiting the engine rpm at a predetermined limit optimum for your particular application. Then by delaying the spark of your engine’s combustion, air and fuel still going through combustion is pushed from your car’s cylinders into your turbo keeping boost up and thus allowing for maximum power off the line. A side effect of this anti-lag system is raw fuel and air still going through combustion as it exits your exhaust, causing those loud bangs and pops in the video. Well worth the effort for anyone who consciously installs an anti-lag system in a turbocharged car.