im sure i recall reading either on here or somewhere else about fitting an aluminium spacer block inside the air box above the carb. In my case on a 1300gt xflow engine. The face curves gradually down to the carb opening in a sinilar way i presume to a trumpet, to improve airflow thus improving power.
Can any one shed any light on this? or is it an old wives/boy racers tale, or even something ive simply imagined!

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Originally posted by magic55
im sure i recall reading either on here or somewhere else about fitting an aluminium spacer block inside the air box above the carb. In my case on a 1300gt xflow engine. The face curves gradually down to the carb opening in a sinilar way i presume to a trumpet, to improve airflow thus improving power.
Can any one shed any light on this? or is it an old wives/boy racers tale, or even something ive simply imagined!

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cheers for confirming that.
was it a spacer between carb and airbox/filter, or inside the airbox/filter?