Performance diff between 4-1 2.5" and 2"
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Performance diff between 4-1 2.5" and 2"
Some people may know that there was a mixup in the 4-1 GB. My question is what sort of performance difference would there be between a 4-1 header at 2.5" and a 4-1 header at 2"?
Should I just wait and get it swapped with a 2.5" or is the diff negligable and just go ahead and install the 2" one?
Also does anyone know the size of the stock header?
Should I just wait and get it swapped with a 2.5" or is the diff negligable and just go ahead and install the 2" one?
Also does anyone know the size of the stock header?
