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Electric exhaust cutouts? Has anybody done this?

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Has anybody put some electric exhaust cut outs on their car? I'm surprised I haven't seen this yet with the PSE cutouts that are already on a lot of cars, the exhaust switch that is already available, and the gains people have seen when bypassing the mufflers and/or cats.

Is putting exhaust cutouts on a car considered tacky? Is this too "American Muscle" for a Porsche?

If I do this (which I probably never will :rolleyes:), I was thinking right at that curve in the exhaust right before the catalytic converters would be a good spot. I don't like that you would have to cut a hole and weld, but I can't think of another way to do it.

What do you guys think?

BTW, I'm not talking about the cutout on the Porsche Sport Exhaust. For those who don't know what I'm talking about here's a picture and a link.



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I am planning to do a very similar mod. But instead of dumping the bypassed exhaust straight out, I am going to dump it into the outer chamber. So I will be bypassing the inner chamber of the exhaust, electrically controlled.

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Exhaust flow is shown in this diagram


I will be connecting an additional pipe directly into the outer chamber, thus partially bypassing (2) and (3) in the diagram.

Edited by Stefan
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Hmm, missing the diagram.

Loren or anyone else, do you think there would be a problem dumping the exhaust before the cat right before the first O2 sensor? I know this would be for off road use only since it would just be dumping excess fuel.

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I think that may drive the DME crazy - and will certainly cause a CEL.

Really? Even if there is still some exhaust flowing through the normal exhaust path? I would think that the O2 sensors would stay within normal range. Am I missing something? Are there other sensors that would cause problems?

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