Quote:
Originally Posted by DEpointfive0
What's the inside diameter at the header to cat flange?
OEM DE is 2.25"
And some guy at Z1 said he THINKS theirs is 2.5" and that they made many improvements to the Momentum design, so I can't take his word
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I will be back home tonight and will provide with true number as I still have them on my wall waiting to be modified
On top of my head if I remember correctly, the Inside Diameter at the exit flange was around 2.125'' which should give about 2 1/4'' OD.