Just saw an interesting article comparing non-catalytic convertor H and X pipes. Read the article here.
The X basically out-performs the H by an ever increasing margin as RPM rises - something to think about, especially if you turn a few RPM....
http://64.14.193.106/p32990_image_large.jpg
BTW, in a comparison article WITH convertors, the H won. But, different convertors were used, so I wonder how valid the results were.....was the difference in the convertors or the junction??? /forums/images/icons/wink.gif
The X basically out-performs the H by an ever increasing margin as RPM rises - something to think about, especially if you turn a few RPM....
http://64.14.193.106/p32990_image_large.jpg
BTW, in a comparison article WITH convertors, the H won. But, different convertors were used, so I wonder how valid the results were.....was the difference in the convertors or the junction??? /forums/images/icons/wink.gif