What about velocity?
What size are the intake and outlet?
Originally Posted by Ross W
Cheers Nigel. The Tube and Fin has significant advantages which are hard to prove on the dyno (without true air speed) - the bar a plate stuff will always be able to sink a fair bit of heat initially and can look good until they heat sink then recovery becomes impossible. The thin wall tube & fin stay in a good window all the time provided the core size & air flow is sited to the application,