[Lookin4SVX]

I think its the borla unequal length headers that add that sound.
I don't think anyone makes an unequal length headers for an SVX.

Here is a tube of equal length headers fallowed by unequal length headers on same car.


Here is a set of borla headers on a magnaflow catback, so it seems to be the headers.
Skip to 1:10 secs, that first min he just lets the idle settle.


SVX with open headers:

From the youtube comments: "holy crap it sounds like it wants to eat babies". That made me lol!