morning Gadge!
id love to post a long reply about how back pressure, exhaust velocity and flow capacity effects performance but, you know what... i really cant be arsed this morning.
here's a link to act as surrogate Rich that pretty much explains what i think you're after. Its not in depth or lengthy but it covers all the obligatories, and brushes on scavenging. Also a little foot note, touches on 'tip tuning' which changes the sound of your exhaust note, when you read it you'll undertand, but as a man with many talents i didn't realise that even the tip of the exhaust could make such a difference to exhaust tone.
http://www.gomog.com/allmorgan/exhaustbackpressure.html
EDIT:- found these guys too Longlife Exhausts according to their website theres a branch in Northampton and one in Brum, probably worth at least an email. they offer a transferable lifetime warranty (maybe a pro selling point in the distant future) and say that their attention to detail is thier main aim... as so many aftermarket exhaust companies do.
enjoy
id love to post a long reply about how back pressure, exhaust velocity and flow capacity effects performance but, you know what... i really cant be arsed this morning.
here's a link to act as surrogate Rich that pretty much explains what i think you're after. Its not in depth or lengthy but it covers all the obligatories, and brushes on scavenging. Also a little foot note, touches on 'tip tuning' which changes the sound of your exhaust note, when you read it you'll undertand, but as a man with many talents i didn't realise that even the tip of the exhaust could make such a difference to exhaust tone.
http://www.gomog.com/allmorgan/exhaustbackpressure.html
EDIT:- found these guys too Longlife Exhausts according to their website theres a branch in Northampton and one in Brum, probably worth at least an email. they offer a transferable lifetime warranty (maybe a pro selling point in the distant future) and say that their attention to detail is thier main aim... as so many aftermarket exhaust companies do.
enjoy
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