Take a guess boys and girls... Early stages but I think you'll get it!!

 

Cut it out man!!..no really!!!!

 

crazy looking bong. but why's it underneath your car?

 

Would that create any wacky back pressure waves or such when closed?
maybe not, dunno.
but cool that you can do it.

 

how do you plan to open it remotely?

 

pretty cool. I'll bet the car will sound sick open test pipe/downpipe, but this will affect tunning because you need to be tuned for open or closed.

But pretty sick

good luck,

-josh

 

The cutouts are from Quicktime Performance and are electric cutouts. I am working on the 1st Z prototype which may be produced in the future as a direct replacement for the cats... As stated, they have electric motors which open and close the via a toggle switch.. Really an awesome setup but only sold as a universal part... I am playing around with different setups to see which position works best... The flange with the motor is obviously not attached yet but will be tomorrow... I will be racing with them OPEN this sat at Z day so we will see if any difference!! As far as tuning,, really depends on your setup.. The unichip that comes with the APS kit is MAP based and Boost dependent so if it makes any more boost with the open exhaust it will compensate with fuel... I will be doing some before and after dyno's though in the near future... Just waiting for my APS plenum which should be here in 2 weeks... I will post more pics tomorrow night when the motors are mounted...

 

Good luck with everything. I'm waiting for my built block. I'm running the Greddy setup instead of using the stock downpipes that come with the kit I'm plannin in amking custom ss pipes with a dump tube for the wastegates. Let me know how that works because probably fro track events I might run Open pipe.

-josh

 

That is very cool, I am thinking about doing this when I put the Turbonetics kit on my car. It is going to sound mean-prolly very deep and throaty. How much are those?

 

looks good but, just wondering, why didnt you go with a boost activated cutout that only opens once youre into boost, vs an electric one that has to be controlled by you, wont you have to have 2 maps, one for stock exhaust and a seperate one for the cutouts open? im thinking about getting a boost activated one, but im just not sure about it. dont know how it will affect engine parameters.

something like this is what im looking at.
http://www.atpturbo.com/root/releases/release091004.htm

 

pardon my ignorance but what are these? I am unfamiliar with this item and can not figure out what it is and what it does. What is it and what advantages does it provide?

 

430ztt, one inlet, two outlet tubes/pipes. One of the outlet tubes/pipes has a valve that can be opened at any time (programmed to open at a given RPM and etc.), it has nothing after that (it vents right there). The other is just a pipe/tube that goes to the rest of the exhaust. Im guessing you put one on each downpipe (or make the cutout your downpipe). You tune for each and you're good to go. (it should make more power, that's the reason for this)

 

Heres one from Apexi....

http://www.apexi-usa.com/product_exh...=227&pageNum=1

 

what would it sound like? obviously loud, but a good loud or obnoxious loud?

 

Loud without rasp most likely. It wouldn't be as loud as an N/A setup (exiting the exhaust at the test pipes) since the turbo quiets down the exhaust note.

 

very interesting, subscribing.

 

For those who are coming to Z day this saturday,, you will be able to hear it in person... And I don't care about boost controlled because I will only be using them for racing... And the occasionally drive by on the street!!.. If we get them to fit where we want them,, then a production direct bolt in replacement may follow... The 2 valves with hardware alone sell for about $350ish so figure in the $550 range for a complete bolt in cat replacement piece.... The beauty behind this is that you can run any exhaust you like regardless of design or power gains, or back pressure and at the flip of a switch, have a wide open no resctriction exhaust.... !!!!

 

Jason, what is the change of backpressure going to change? (lean out the A/F? rich? nothing?)

 

its going to be ridicolously loud.. cool=).

 

using it while only racing is even worse, youre still gonna need different maps to use it, i bet its gonna throw all your parameters out of whack, dont you think? whereas a boost controlled one, the system is tuned WITH it in mind.