PORTED 03 Cobra Heads go to link for pics
http://www.chicagosvt.com/forums/showthread.php3?t=15737
http://www.chicagosvt.com/forums/showthread.php3?t=15737
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Muskalade said:Ported heads dont make a set number they improve flow, less restriction and if these are going on your stock cobra they wont make much of a difference.
Muskalade said:On the other hand high boost with a kb or whip you can see improvements and that would be more power with the same amount of boost
Muskalade said:becasue psi doesnt equal hp, psi is just a measure of restriction