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**White90MX6** · 3-10-04, 19:42

yea, thats how I would consider it... I could be wrong though.

I think also you could add that gas going from a reasonably small volume (in the engine) to a larger volume (in the exhaust) the gas (which is hot, and high in kenetic energy) will expand quickly (due to the good old p1v1 = p2v2 eq) and therefore 'suck' more air through the engine.

Also, the lack of back pressure etc in larger exhausts due to there not being enough exhaust gas (from the engine) to create enough pressure within the exhaust to effectively suck air from the engine (especially at low RPM). Like having a 3" exhaust on a 1.5L non-turbo pulsar.... hey, it happens.

Tripharn

3-10-04, 19:42	#2 (permalink)
White90MX6 Join Date: Jan 2003 Location: iTrader: (0)	yea, thats how I would consider it... I could be wrong though. I think also you could add that gas going from a reasonably small volume (in the engine) to a larger volume (in the exhaust) the gas (which is hot, and high in kenetic energy) will expand quickly (due to the good old p1v1 = p2v2 eq) and therefore 'suck' more air through the engine. Also, the lack of back pressure etc in larger exhausts due to there not being enough exhaust gas (from the engine) to create enough pressure within the exhaust to effectively suck air from the engine (especially at low RPM). Like having a 3" exhaust on a 1.5L non-turbo pulsar.... hey, it happens. Tripharn
	150kW ATW... 12psi.