I have been using a Walker 17783 on = our '88 waterboxer for over a year. It is accompanied by a 2.25" = catalyst from a 16V Scirocco and 2.25" tubing as a tailpipe. Yes, the = longest tailpipe possible is important to keep the noise level down. Ours = is growly at idle, and makes a vocal hum at speed. I like the sound = that engines make and to me it's music. I have had cars in the past = with obnoxiously loud performance exhausts. The Walker Super Turbo is = much better behaved.

Regarding performance, our '88 also = has a Jacobs "Omni Pak" ignition amplifier. Our local VW wrench has = asked several times after servicing the Vanagon "are you sure that's all = that you did to the engine?"