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Celica_RA40 Regular Location: Newcastle Registered: May 2002	Re: 3" exhaust makes a hell of a difference! Tue, 11 June 2002 11:53 Ra28 A company Called FMF have done a lot of research into the small expansion chamber system on a modern 4 stroke bike. granted these bikes come with a 5 valve head and the valves are made of titanium and such but they have made 2 different headers with mini exansion chambers for the YZ250 400 and 426 four stroke race bikes called the power bomb headers. i would say they they had spent a few million on researching the design and they came out with 2 headers, one for supercross which is basicly all low revs work and one for motocross which is more top end. here is a pic of one [Report message to a moderator]

	Subject	Poster	Date
	3" exhaust makes a hell of a difference!	TE72_Turbo	Sun, 09 June 2002 12:57
	Re: 3" exhaust makes a hell of a difference!	YOGI8U	Sun, 09 June 2002 13:11
	Re: 3" exhaust makes a hell of a difference!	draven	Sun, 09 June 2002 23:22
	Re: 3" exhaust makes a hell of a difference!	AE86_Sprinter	Mon, 10 June 2002 00:37
	Re: 3" exhaust makes a hell of a difference!	RA23_Sean	Mon, 10 June 2002 03:59
	Re: 3" exhaust makes a hell of a difference!	Chriph	Mon, 10 June 2002 04:33
	Re: 3" exhaust makes a hell of a difference!	MRTA22	Mon, 10 June 2002 06:56
	Re: 3" exhaust makes a hell of a difference!	Apollo	Mon, 10 June 2002 09:21
	Re: 3" exhaust makes a hell of a difference!	jza70-mel	Mon, 10 June 2002 09:29
	Re: 3" exhaust makes a hell of a difference!	TE72_Turbo	Mon, 10 June 2002 11:34
	Re: 3" exhaust makes a hell of a difference!	Celica_RA40	Mon, 10 June 2002 11:37
	Re: 3" exhaust makes a hell of a difference!	Apollo	Mon, 10 June 2002 12:00
	Re: 3" exhaust makes a hell of a difference!	RA28	Tue, 11 June 2002 08:06
	Re: 3" exhaust makes a hell of a difference!	AE86_Sprinter	Tue, 11 June 2002 10:52
	Re: 3" exhaust makes a hell of a difference!	celicamad85	Tue, 11 June 2002 09:05
	Re: 3" exhaust makes a hell of a difference!	Celica_RA40	Tue, 11 June 2002 11:53
	Re: 3" exhaust makes a hell of a difference!	MRTA22	Tue, 11 June 2002 12:43
	Re: 3" exhaust makes a hell of a difference!	Apollo	Tue, 11 June 2002 23:58

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