Fire up - cold start of a Ferrari 512 Berlinetta Boxer

Firing up my 1976 Ferrari 512 Berlinetta Boxer after two months having stood in the garage... Note the flame after the backfire! The procedure for a cold engine is as follows: Twist the ingnition key to the first position. You will hear the clicking of the fuel pumps as they start delivering fuel to the carburetors. After approximately 15 to 20 seconds, pump the accellerator pedal to the floor four or five times, squirting lots of fuel into the intakes. Then, while holding the accellerator pedal about a third of the way down, twist the ignition key to the start position. You will hear a deep, exiting, expolding bark as the engine comes to life, accompanied by significant quantities of smoke out of the exhaust tips, as the oil that hs been resting in the cylinders is burnt. If the ambient temperture is cold and the car has not been driven for a while, the engine may die, necessitating a repeat of the above-described prodecure. Once started, the rpms should be kept at 2,000 until the smoke