The system works the same as the 70 GTO dual mode exhaust did. When you pull the know vacuum pulls the valve in the muffler open and holds it open until you release the knob. As long as the system is plumbed tight, they work great.
We now have Waldrons DCE (driver controlled exhaust) car mufflers available. They are not listed on the online store yet so please call or e-mail me for pricing or to order. Thanks
when i clicked your link it just goes to chevyteam.com. oh no an old thread. anybody knows who still sell this kind of stuffs? i need car mufflers please give me some sites that youve tried and tested. thanks in advance!
Last edited by masterjohnson; 03-06-2011 at 10:25 PM.