Quote:
Originally Posted by undy
I dumped the spirals after suffering massive HP losses. i'm running 3" ID pipes now. They're a bit louder than the spirals but I picked up 50 RWHP. The flow's still crappy though.
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Dave, you are really up there in HP correct? The Cobrapacks you are running now are as good as you are going to get as far as flow - with a 4" OD muffler body. As I recall, your HP is enough so that you could be running 4" flowpath mufflers....... This would then require you to have a 4" min. diameter in your merge collector. Hey look at it this way - you gained a lot by going with mine & still some noise control. You could run zoomies through the hood??
