stu, i saved the text from a few posts over the years....
dear old uncle tony posted this amidst the good olf t4 on 4 803's battles over the years
http://www.derbyshire-rsoc.co.uk/mat...onsumption.txt
yours re surge, cams, and turbo's respectively
http://www.derbyshire-rsoc.co.uk/mat...ay%20surge.txt
http://www.derbyshire-rsoc.co.uk/mat.../stu%20cam.txt
http://www.derbyshire-rsoc.co.uk/mattupload/stu's%20turbo%20post.txt
any use?