What is this? What does it do? Does it make it so you go from muffler to just strait exit? More flow/faster? I tried a few searches but I didn't know what it was called so I couldn't figure it out. Thanks

 

yes, it switches from your notmal exhaust to just out that hole. not exactly sure what its called though

 

Its called a Cutout.. There are a couple types. electronicaly activated or some have a cable mechanism. Just allows you to open up your exhaust to get the "Open header" effect or so that it wont run through your entire exhaust system. Pretty cool mods but ive herd they dont last too long(they start leaking after a while)

 

The concept is pretty cool but Its kinda pointless. How much of a power increase are you gonna notice from it? Do you really need to choose from full exhaust or open header on the fly? lol

 

alot of turbo guys have them hooked up to rpm activated switched or to the TPS sensor so that it opens at full throttle
makes it so you can get the power gains of open exhaust but dont have to create havoc in your neighborhood at 5 am

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by low91rex &raquo;</TD></TR><TR><TD CLASS="quote">The concept is pretty cool but Its kinda pointless. How much of a power increase are you gonna notice from it? Do you really need to choose from full exhaust or open header on the fly? lol
</TD></TR></TABLE>

Well I dont know how much more power you might get. Its almost the same thing as a "straight pipe" exhaust....but you have the option to make it a "cat" exhaust. They usually mount them before the cat so that when its open there is no restriction on the exhaust flow. Another reason is for the track and also just to get some nice flames when you want to. I hear alot of turbo guys that swear by them.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PuroMotor &raquo;</TD></TR><TR><TD CLASS="quote">

Well I dont know how much more power you might get. Its almost the same thing as a "straight pipe" exhaust....but you have the option to make it a "cat" exhaust. They usually mount them before the cat so that when its open there is no restriction on the exhaust flow. Another reason is for the track and also just to get some nice flames when you want to. I hear alot of turbo guys that swear by them. </TD></TR></TABLE>

Wait, it causes flames?

 

That cutout itself doesnt cause flames. Have you have disconected your cat from your header? and you floor it and it will back fire a little flame? well thats what happens. And for turbo cars its looks pretty damn cool.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nosyt &raquo;</TD></TR><TR><TD CLASS="quote">alot of turbo guys have them hooked up to rpm activated switched or to the TPS sensor so that it opens at full throttle
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Ive never heard of anything like that.... ever.... thats ridiculous.

 

you dont gain any power hardly off an electric cutout. all it does is, it just makes the turbo spool a little quicke becuz there isnt n e back pressure to slow down the gasses.

 

no there is a big power diff when u proper tun it and there is one thing that is also true they get old and just start to leak and then u have open header 24/7 and that just doesnt work so in my opinion they suck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by low91rex &raquo;</TD></TR><TR><TD CLASS="quote">

Ive never heard of anything like that.... ever.... thats ridiculous. </TD></TR></TABLE>

Because you havent herd of it doesnt mean its ridiculous...

heres a Mazda Speed 6 with boost activated cutout....almost same thing as rpm activated cutout.

http://youtube.com/watch?v=bjrljs7ZjT0

 

my bro has a 02 wrx with an sti turbo, up pipe, down pipe, straight through exhaust set up. The car was too loud and was beginning to wear on him... and he is a DJ that used to spin at clubs?! Weird, any ways, we came across these units... like some have had said in the replies... they keep the noise level down during easy driving- like in the city. He eventually bought one (cant remember the brand) that is manually adjustable. The switch (****) was installed next to the hand brake. Since then, he has been driving with it at 70% closed... i think... He lives in SF CA so the 50s are always looking for a reason to give you a ticket.

I think it the trend started in Japan around 2002~2003, these units were very popular due to the then new noise regulations. I think Tanabe, Apex-i, Greddy, and HKS all developed all in one exhaust systems that incorporated these rev-adjusting butterfly switches. I think these exhaust system are very common in japan... they are for "novices" or "older tuners". I no longer have my option magazines with featured exhaust, as i have moved to London. But i hope that helps...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by futurestate &raquo;</TD></TR><TR><TD CLASS="quote">

I think it the trend started in Japan around 2002~2003, these units were very popular due to the then new noise regulations. I think Tanabe, Apex-i, Greddy, and HKS all developed all in one exhaust systems that incorporated these rev-adjusting butterfly switches. I think these exhaust system are very common in japan... they are for "novices" or "older tuners". I no longer have my option magazines with featured exhaust, as i have moved to London. But i hope that helps...</TD></TR></TABLE>

I dont know about the trend starting in Japan but they did develop some of the better model cutouts. The best one ever was developed by HKS and used on one of their Skylines. It opens and closes with an onboard control unit and can be adjusted to whatever "loudnes" you want it...

heres a link to that vid....its pretty awsome the way it opens and closes...it shows how it works at around 2:40 into the video.

http://youtube.com/watch?v=t0XjPnsCbA4



Modified by PuroMotor at 8:34 AM 1/24/2008

 

this thread is horrible. most of you need to learn and grasp the english language, y0 sen d9s be da bomb son...

 

I read the entire thread again and nobody used "yo,son, or d9s" like you stated....what and who are you talking about?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by low91rex &raquo;</TD></TR><TR><TD CLASS="quote">

Ive never heard of anything like that.... ever.... thats ridiculous. </TD></TR></TABLE>

Its because you are ignorant as to how turbochargers work. Its okay, you can't know everything.

On an NA Honda, you really can't flow enough exhaust to over-extend a 2.5" exhaust to the point where a cut-out helps. Also if you have 'big' cams in an NA Honda, you will loose further power at low/mid RPMs and some higher RPMs since you get so much intake air flowing right out of the still-open exhaust valves during overlap. But I wouldn't expect any of the bench-racers to understand or even believe that concept, so I won't explain it further.

 

Well I dont mean to start a whole argument with you but all that you said has nothing to do with what a cutout is built to do. It simply makes your exhaust silent or loud. There isnt any huge hp gains or losses. But I do agree with you about that guy being ignorant. I cant stand when people start yaping away about how things are ridiculous or impossible or fake when they havent seen it or know what they are talking about to begin with.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PuroMotor &raquo;</TD></TR><TR><TD CLASS="quote">Well I dont mean to start a whole argument with you but all that you said has nothing to do with what a cutout is built to do. It simply makes your exhaust silent or loud. There isnt any huge hp gains or losses. But I do agree with you about that guy being ignorant. I cant stand when people start yaping away about how things are ridiculous or impossible or fake when they havent seen it or know what they are talking about to begin with.</TD></TR></TABLE>

According to what you say a cutout "only makes your exhaust silent or loud" so whats the point of an RPM activated cutout? And im not yapping away about anything buddy your the one making an issue