Any knowledge of aftermarket vacuum cutouts?

[Mike_Levy]

Exhaust cutouts. Kinda like the electric ones, but vacuum operation so they open under load like the GM Dual stage exhausts on the Vette and ZL1 or the Dynomax V series mufflers.

Any idea if they exist? Any way it can be programmed into the PCM to open the electric ones under load?

Should I "invent" them and apply for a patent (my last patent failed miserably)?

[Ill_Born_SS]

Maybe these guys: http://www.waldronexhaust.com/

The DCE muffler... http://waldronexhaust.com/drivercontrolledexhaust.htm

[Mike_Levy]

Cool, thats close, but I want to be able to stick it on a normal cutout, like the QTPs, so I can keep my stock mufflers. That way during normal driving, its quiet and torquey, but when I want to run, they'll open and the backpressure and sound deadening will be gone.

I think I'll send them an email or call them and see what they can do though. Maybe they can figure something out.

[mikel]

I believe dyno max now has exactly what you are talking about...

[mikel]

DynoMax Valve Technology Mufflers feature an exclusive, precisely calibrated internal valve that redirects exhaust flow, during cruising conditions, to provide Drone-Free Performanceâ„¢. Hammer the gas and the valve automatically adjusts for maximum exhaust flow, delivering on-demand performance and a deep, throaty drone-free sound.

http://www.dynomax.com/mufflers.php?muffler=vt

[Mike_Levy]

I know about the Dynomax mufflers, but I don't want mufflers. I'm having cutouts put on in front of the stockers, so I just need a way to open and close them. The electric ones will work fine, but I'm looking for something a little more automatic.

Changing the mufflers is not an option at this point. I use the V to take my parents to the doctors, and having a loud exhaust won't work.

[mikel]

gotchya...

I dont think you'll like the way it sounds with no mufflers though, kinda rough IMO for a caddy

I'd swing for the electric cutouts, cause if its vacuum and you have to give it some throttle in front of a cop for some reason, its going to get load

[Ill_Born_SS]

agreed ^^^. I did an edit on the earlier post

[Mike_Levy]

Alright. Thanks guys. Guess its gonna have to be electric with turndowns.