I have owned a Yank SS3600 and a Yank PT4000. I use to DD with the Yank SS3600 and I liked it alot because it was so tight. The PT4000 I really wouldn't want to DD with, too loose and the car is so damn loud with it. I wanted track times so that's why the switch.
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'97 Formula WS6 A4
18,000 Original Miles - 11.71 at 115.5mph w/ 1.56 60' |