I was thinking about getting one of these


MAGNAFLOW® 10783

And welding on, jury rigging one of these bad boys on


Drive by wire throttle body (electronic throttle body)

Here's some in action, the switchover is pretty instantaneous!



I couldn't find it, but there was a video where it was rigged up to a toggle/on off switch, and the person did it while the car was on/driving and the exhaust note change was instantaneous. It went as the button was pressed, seemed much faster than the usual cutouts you can buy.


However I have a few questions when I do this mod.
Here is my plan to wire it

exhaustcutout>on/offswitch>12v power (probably cigarette lighter, anything that turns off when car is off).

Ground will go to nearest good ground.

Is this safe to run this without any fuses or relays? Or should I go about adding some?

Please show me your flowcharts if you have a better idea

ex: cutout>fuse>switch>fuse>powersource?

or

cutout>relay>switch>powersource

thaNks! Happy moddin!
I'm using a drive by wire throttle body from an 06 chevy impala if that helps.

 

Im not sure how well a TB will stand up to the elements under the car and the exhaust pressure and temps, especially that close to the engine.

And YES you should use at minimum a fuse, you should ALWAYS use a fuse when hooking up something electrical.

This is how i would do
Power source/fuse/relay/cutout
Switched power to Switch, Switch to relay

 

please don't

 

Yeah I figured about the longevity of an electronic TB for this purpose, and thanks for the flowchart :0)
One person didn't last as long, but a person on youtube claimed his lasted 3 years.



I've been thinking about rigging a cable operated throttle body hooked up to the imrc somehow or the throttle pedal so it only opens during mid or high RPMS and is closed during low rpms for low end.


Also thinking about (if i go tthe drive by wire route) wiring the throttle body to open during vtec, similar how people wire in vtec lights? so its only opened during those high rpms.

so much thinking not enough time to apply!

 

DOlan plz stahp

 

Gooby pls

 

TBs dont seal well enough for an exhaust purpose. If you were to do it, get an actual exhaust cutout. They are designed for the heat and seal tight so there arent exhaust leaks

 

Oh and for anyone running a stock CL/TL muffler, if you drill a 2 1/4 - 2 1/2 hole next to your current exhaust pipe (exhaust tip side) and have a piece of exhaust pipe welded in to the hole, mount the cut out there then put a tip on, you will basically bypass the chambers of the muffler and make it more of a straight thru design that can open (under wot, rpm, etc) like the C6 corvette dual stage muffler. You will have to run 2 tips but you will get more flow and sound without the drone (when closed)

 

this

 

i had two electric cut outs (not tb's) and destroyed both by being low. the teeth on the motor and gears also chipped off. im gonna get another cut out but with a cable that i pull. less hassle and more durable.

 

Ah I see, that worries me :[ I'm looking into throttle body cable pull styles, I think it would be more durable too compared to electric. I alreayd spent 30 bucks on a drive by wire though

 

I'm having a hard time trying to figure out how this looks

the pipe before it turns into a Y to the dual mufflers? but after the mid muffler
(i'm stock exhaust)

 

No, he means looking at the back of the car, look at the exhaust tip. Drill into the same "wall" that the tip comes out of and weld a new pipe + tip on that. That new tip bypasses the chambers, as he said. You'll also have quad tips for maximum vtechs.

Also, exhaust cutouts arent that expensive. Why bother ghetto rigging it just to do it all over again when the TB inevitably fails?

 

AH I see what you did thar now. Interesting. It's like de-mufflering without having to take off the mufflers. Butttttt
I want my car quiet when I want it, and loud when I want to go fast =[

I've heard many a story that e-exhaust cutouts don't last long and the motors turn too slow for my liking.

I've ghetto wired the drive by wire throttle body i ordered off of egay and it opens and closes instantaneously

I want to somehow rig it to Vtec the similar way that people make vtec light mods

the electrical current will only give power to open exhaust cutout when vtak kix in! yo!

Plus if the TB fails, I can always put a cable operated TB when it does, or rig the springs alread in the drive by wire TB

I alreayd opened up the DBW TB and its very similar to a regular cable TB,
the concept is very basic, you have a motor and a gear that spins this middle gear, in which in turns spins a 3rd gear that opens and closes the throtle body by flexing the spring or IDK how to explain

AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HH

 

just don't do it. You're not making crazy power anyways. Save your money for something like headers.

 

Below is what the stock muffler looks like . Normal flow is the grey, with the cutout closed. With it open the exhaust (greenish color) is going to go the path of least resistance and go out the other tip. If its partially open it should go thru both and be somewhat baffled/reduced

 

Wow thanks Now I understand completely,
I would feel weird with the cutout installed on the muffler itself because it would look weird but


that is a genius idea for those who just have the cutout and not the motor so you just could pull over and plug it in whenever you want. I'm thinking to place the cutout after teh cats for an extreme sound

 

 

Lol i was hoping for a way
to open the exhaust cutout only during vtec by splicing the vtec wire power to the exhaust cutout

similar to those vtec light mods that turn on an LED or light during vtec

 

where it would be located not much of it should be visible, the bumper an exhaust tip would hide the majority of it
It could be wired very easily to activate with vtec. Personally i would have it hooked to the throttle position sensor to open at wot.

 

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