I am wondering what everyone's opinion is on a cross-over pipe on the exhaust. I got into a lengthy discussion with a vendor on whether the cross-over pipe was necessary or not. I have built many cars and have different feelings about the necessity of the cross-over, or X pipe.
I can see it equalizing the exhaust pressure and would agree with that. However, it minimalizes the sound of the exhaust, or should I say the sound of the cam. The way I see it, the cross-over pipe would make the exhaust sound more even and possibly more mellow (for a lack of a better term).
It seems that it kind of defeats the purpose of "Dual exhaust". I have never dyno'd one to see if it makes a difference on power or not. I want to hear about what some of the Guru,s think.

Ed