Quote:
Originally Posted by freebeard
The Super Turbo pic is interesting. What are #s 1 and 2?
1 and 2 are 2 alternatives for a H Pipe or (IIRC) Balancer Pipe in a V (8) engine.
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Basically; because the pulses are at different times in each bank; sharing the (normally separate) 2 exhaust systems means a lower mean flow per exhaust, which means lower, more averaged flow per system and less back pressure.
I don't know if you've ever heard the difference between 2 separate 'pipes' and 'conjoined' pipes?
The difference in sound is night and day, from loud, rough, and unrefined, to a far quieter, smooth, refined sound.
Economy will also increase.
Quote:
Originally Posted by freebeard
What ballpark is 2.2 CFM per HP in?
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Well apparently mufflers, worth the name, come with a CFM rating.
You take that #, divide by the (desired) HP and aim for a number higher than 2.2.