Interesting,
I just saw a video clip of cutouts on an IS, so I decided to check the forums and see what other CL members thought. For all of you guys that don’t understand how cutouts work, here is a great illustration (http://www.quicktimeperformance.com/QTEC/)
And for all of you that would like to watch the vid, here you go http://www.quicktimeperformance.com/Media/LexusQTEC.wmv


Hope this was helpful

What would you guys think of cutouts on a GS4??

 

Thats pretty cool. Nice burn out too. Just curious though, would this benefit the most before or after the second set of cats. I'm guessing before the second set. So when the valve is open, basically the exhaust flows out both the cutout and the muffler?

 

basically YES

 

is there any update on this...im interested in doing this on my 350

 

go toDMH performance and buy one...I think you need a 2.5". an exahust shop will weldthe y pipe in and you can wire it. Takes like 20 min to wire it and install the switch.

Do it and post a video please!

 

im worried it will sound ricey though..has anyone done the cut out yet?

 

i had DMH electronic cut out on my integra works really well sounds stock when closed. When open you can hear the turbo spool =)

gained 25whp w/the cut out open so they sure do work

 

RESURRECTED!!!

I have a friend with the Summit electric cutout on his suburban and it's definitely impressive. I doubt he gets much performance gain from it since his engine is stock, but I was considering a different approach.

How well would a cutout work for a turbocharged 2JZ? When I go FI, I want an exhaust that's quiet around town so I can maintain an air of class when need be, but I don't want to choke my turbo when I need to giddy up. If I welded a cutout at the end of my downpipe, I could keep my stock exhaust and only open it up when I needed the power.

What do you guys think?

EDIT -- I just watched JeffTsai's video of his cutout and it sounds awesome. Got any more videos for us Jeff?

 

It will cause exhaust leak? how does it float when open? it will float both way? does it really gain hp?