Automatic Vacuum Exhaust valve/choker/CutOut

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09-04-2016, 11:08 AM

#21

travlee

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just took this.. you can see it in action. i tried closing it again, but the fumes were getting to me

edit... i have a remote that i can open and close them anytime i want

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09-04-2016, 11:45 AM

#22

travlee

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so this is how it works on my car

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and while on the vette forum, saw this axle back for $350.... expensive for just the tips

http://www.corvetteforum.com/forums/...ack-350-a.html

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OdesiTT (09-19-2016)

09-11-2016, 04:36 AM

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Quote:

Originally Posted by OdesiTT

Then why BMW using vacuum valves for the same purpose? Even Dinan making exhausts with this valve. I'm hardly believe they don't know something that you know. Let's don't be too sceptic. This is a good and proper way to add some back pressure. The question is: how to install it and what is going to fit well.

I'm almost positive these kinds of systems are designed purely to deliver a better sound. I've driven corvettes, audis, porsches, etc that have these systems and there was no difference in performance between the two settings. Only difference was how loud the exhaust was. A lot of them are tuned to not be loud at common cruising speeds as well. It's actually a really nice thing to have.