The exhaust pipe Spitfire: partial ignition system

In fact, this bias when ignition system at work. A turbo lag (Turbo LAG) phenomenon is well known, the turbocharger system, i.e., due to the inertia of the turbine impeller, the rotational speed of the turbine blade of a slow reaction instantaneous change of the throttle, that is accelerated from Bigfoot throttle to the impeller rotation there is a time difference between the more air pressure into the engine, so the turbo lag is bound to generate power hysteresis.  

General turbo road car, because they are to use a smaller number of turbine blades, causing the slight turbo lag phenomenon. Racing and modified cars often use a king-size turbine to increase horsepower, heavier blades require more time and energy of the exhaust gas to push the blades accelerate and booster, these are not allowed in the arena against the clock bias when the ignition The system came into being, the purpose is to reduce turbine hysteresis.

    Bias when the ignition system is the turbine speed compared to the engine speed to have a lead, for example, the effect of 4000 rpm and even higher speed supercharged engine 3000 rpm. In the case of cornering or deceleration of loose throttle ECU alone give a signal to command fuel supply system of the automobile enters a large amount of gasoline into the engine, but no ignition, but directly to the mist of gasoline without combustion situation after discharged to a very high temperature (about eight hundred to nine hundred degrees Celsius) of the exhaust system.  

Automatically detonate when the mist of gasoline into the high temperature because of the exhaust manifold. Pressure to promote turbine blades continued to accelerate direct combustion in the exhaust system, the car even in the case of deceleration to maintain the speed of the turbine blades (about 14000-20000rpm), thus eliminating turbo lag phenomenon, so the car only has turbocharged horsepower and has a the naturally aspirated smooth. And powerful explosion flame will be along the exhaust pipe all the way toward the tail pipe, so when there will be partial when ignition system operation sparks from the exhaust pipe ejected.