Questions about cutout for aftermarket DP / stock exhaust

[dmharvey79]

Would it be possible to use 3 Y-pipes and sections of straight/bent pipe to build something similar to 4DR's setup? (not nearly as nice to look at but still funchional) See my attempt at a rough diagram below...

                            ---------------------- >- --------DOWNPIPE
STOCK EXHAUST      CUTOUT -<
                            ---------------------- >- --------DOWNPIPE


This is the sort of Y-pipe I have in mind
http://www.amazon.com/dp/B003M2EP36/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&colid=2A0UE9JFWPJA8&coliid=I3RC7UJXP8NAW1

[SRT82ECOBOOST]

I don't think the stock exhaust is.spaced further enough apart to do this.

[dmharvey79]

That's what I was wondering about. Something along those lines would wind up measuring roughly 18" wide and 36" long, so pretty bulky. Maybe a possible approach with removal of the third cat? There's no o2 sensors downstream of the third cat right?

[EcoPowerParts]

What if I worked with PPE to do a dual stage exhaust where you don't see the cutout and at WOT it opens automagically?
Would be around $1500 for a catback but would be a full stainless two stage exhaust.

[BiGMaC]

Would it be possible to use 3 Y-pipes and sections of straight/bent pipe to build something similar to 4DR's setup? (not nearly as nice to look at but still funchional) See my attempt at a rough diagram below...

                            ---------------------- >- --------DOWNPIPE
STOCK EXHAUST      CUTOUT -<
                            ---------------------- >- --------DOWNPIPE


This is the sort of Y-pipe I have in mind
http://www.amazon.com/dp/B003M2EP36/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&colid=2A0UE9JFWPJA8&coliid=I3RC7UJXP8NAW1

I don't think the stock exhaust is.spaced further enough apart to do this.

Here are couple of picks of 4Dr's install and the part... more and a video of it working is at this link:
http://www.ecoboostperformanceforum.com/index.php?topic=695.msg5510#msg5510

Here it is uninstalled seen from the top...click to enlarge


Here's a bottom view installed... click to enlarge

[EcoPowerParts]

BTW, the "cutout" would be in the muffler assembly itself and have a vacuum canister to operate the cutout portion. Paul has built one for the Lexus crowd and it's super
awesome.

http://www.clublexus.com/forums/8252334-post43.html

Remember when looking at the dynos in the thread that it's an NA application, boosted apps would pick up more power.

[dmharvey79]

For my application I'm really looking for something with electric open/close control. Maybe a catback exhaust design that incorporates a flange so customers can add whatever cutout configuration they want? I'd probably be interested in something along those lines.

[BiGMaC]

BTW, the "cutout" would be in the muffler assembly itself and have a vacuum canister to operate the cutout portion. Paul has built one for the Lexus crowd and it's super awesome.

Any idea of pics or a blog page URL?.... sounds interesting... we've talked and you know I want one!  .. with some control of functioning and on/off....Wish another group buy could be worked up!

[EcoPowerParts]

For my application I'm really looking for something with electric open/close control. Maybe a catback exhaust design that incorporates a flange so customers can add whatever cutout configuration they want? I'd probably be interested in something along those lines.

You can put a switch on the open at WOT feature and no requirement to hold a button to open it.

[BiGMaC]

OK... I'm an idiot.
....went to the Lexus blog..... looks like the cutout comes out of a "dummy" muffler.  If I see it right, how much performance is lost as opposed to coming straight off the downpipes? ... especially if we consider a drag launch at 1800-2200 rpm?

[SwampRat]

Would it be possible to use 3 Y-pipes and sections of straight/bent pipe to build something similar to 4DR's setup? (not nearly as nice to look at but still funchional) See my attempt at a rough diagram below...

                            ---------------------- >- --------DOWNPIPE
STOCK EXHAUST      CUTOUT -<
                            ---------------------- >- --------DOWNPIPE


This is the sort of Y-pipe I have in mind
http://www.amazon.com/dp/B003M2EP36/ref=wl_it_dp_o_pC_S_ttl?_encoding=UTF8&colid=2A0UE9JFWPJA8&coliid=I3RC7UJXP8NAW1

I don't think the stock exhaust is.spaced further enough apart to do this.

Here are couple of picks of 4Dr's install and the part... more and a video of it working is at this link:
http://www.ecoboostperformanceforum.com/index.php?topic=695.msg5510#msg5510

Here it is uninstalled seen from the top...click to enlarge


Here's a bottom view installed... click to enlarge

I'm confused , is 4DRHTRD's  cutout a custom one off or is it available for Sale ?

[FracaSHO]

What if I worked with PPE to do a dual stage exhaust where you don't see the cutout and at WOT it opens automagically?
Would be around $1500 for a catback but would be a full stainless two stage exhaust.

I would be interested in buying that. But a open/close switch so I could control when it opens would be nice.


Brad
2010 SHO with PP
Sent from my iPhone

[crash712us]

Now thats a cool set up 4dr!

[BiGMaC]

Kbeck.... They lost the jig... I have priced it out with 4DR..... he can reproduced it though. as a "one of" it will likely be as much as $1600 on the car with my ideas.  A group buy would help.    As far as the one for the Lexus being adapted 4DR promises more later and already works with the fabricator.

[SHOdded]

Long live 4DR!  The man never rests!