the headers that Ryan dyno'ed TTI had 3" collector and the husler had 3 1/2" collector. I have the 1 7/8 TTI with the 3" collector and I think the collector is alittle short for making power. also when looking up inside the collector I notice where the 4 tubes come together,their all different lengths. any other header collector i'v looked in have all been same length.
