Subject	it's a combination of velocity and volume.
Posted by	JC_NS on September 13, 2003 at 5:39 PM
	This message has been viewed 23 times.
In Reply To	No, No, No. posted by PEwithaZ on September 13, 2003 at 03:21 PM
Message	if it were just a matter of velocity,then everyone should run an exhaust system as small as possible. You should consider state of tune and goals. If you have the right cams, the cams will create the backpressure needed to speed intake velocity. Look at Formula 1 and Indy cars or other race cars without mufflers and cats. The need for backpressure is adressed by using the right cams. A bigger exhaust system will generally sacrifice bottom end power and torque for top end benefits. By using different sizes you can customize hp and torque curves to your desired needs.
Follow Ups	exhaust question (custom made) for a N/a - turbo1 01:30:47 09/13/03 here is a custom made one for TT, with sound :o) - northZ 02:10:06 09/13/03 Having one made for mine as we speak. - TritonZ 06:43:59 09/13/03 3" is too big and your really hurting your car by doing that - TTwinZ (CT) 09:17:12 09/13/03 I never liked the term back pressure, exhaust gas velocity. - ScubaSteve 09:42:14 09/13/03 Thanks i didn't really know all the technical stuff... - TTwinZ (CT) 10:49:54 09/13/03 Right on. Need for backpressure is a myth. - mm_95TT 13:31:09 09/13/03 My thoughts :) - ZBlacktt 13:43:12 09/13/03 You cannot separate HP and torque - PEwithaZ 15:12:29 09/13/03 No, No, No. - PEwithaZ 15:21:20 09/13/03 it's a combination of velocity and volume. - JC_NS 17:39:20 09/13/03 sounds real good as long as you go with good - NR98 (next year) 09:55:56 09/13/03
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