well i plan to do alot more porting to the blower so i dont see it taking away that much efficiency(spl?) , as for warping , the guy who welded it and myself check it on my intake , lays flat ... and according to him that weld will never break, it will break arround the weld before the weld its self will break or crack, its all aluminum and thats what he weld with was aluminum, my car hopefully should be done by march so ill have some videos and more info then, but for now ill be posting update pics of the porting im doing.....
