Motorized Exhaust Cutouts to switch boom volume at will - The Marketplace

Tom

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Tom

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Ever wanted to change the volume of your exhaust on the fly? Some aftermarket exhaust systems already have integrated bypass or reroute valves built in to instantly turn a street legal sports exhaust boom into an all out racecar growl. A very naughty toy indeed.

Electonic cutouts installed on BMW E90 M3 Sedan - CES MOTORSPORT - YouTube

Some time ago I was actively searching for a cost effective solution to these exhaust cutout systems that can be sandwiched into the existing install but have found very little options that were electronically activated. Some early Apexi models operated through a cable piped into the cabin and triggered with a tug. There were also DIY-ists out there who fabricated their own with the clever use of a modified throttle body



Fortunately electronically operated ones are now made more available with more aftermarket manufacturers jumping on the bandwagon. These electronically operated versions are wired to a motorized solenoid that shuts or open a bypass valve. It also has flanges on both ends for ease of installation and removal.



Where there are sought-after products, cheap knock offs will follow. But not that anyone patented the idea in the first place. It's just nice to know people make cheaper alternatives. I found this on the marketplace just hours ago posted yesterday by andysky5, a regular here. Priced at RM580, it is not spare change nor can I comment on it's value either. But if one ever drooled over such a toy, it's quite the affordable route. Virtually stealth when the valve is closed, one can finally avoid detection from the authorities, the wife, or the parents. This is not a paid ad just in case.

For Sale: Exhaust Cutout Valve - Electonic



Application wise, you can have it bypass the mufflers altogether for the ultimate flow in forced induced cars or you can bypass certain restricted sections of the rear mufflers to achieve a louder tone, but not too overwhelming. Ultimately, the cars that will benefit most from an exhaust cutout valve are the turboed ones. NA cars, more novelty, yet priceless when a 6 or 8 cylinder is let to scream in the open. - at will

More videos of the possibilities :)

HEMI Dual Exhaust Cutout Valves- Engine Running - YouTube

bmw m5 electric cut out dmh performane - YouTube
 

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mADmAN

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mADmAN

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when its closed the exhaust gasses flow through a secondary pipe through a silent muffler...

ex-owner of my car did this using a throttle body and its very effective..

motorized exhaust cutouts however, has a reputation of the motor dying in a few months, rendering it totally useless. even the "branded" ones have that reputation
 

Kevin Lee

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Kevin Lee

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mADmAN

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mADmAN

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would performance be affected since the exhaust now has a Y joint instead of a straight pipe?
for me theres a difference between open n closed... car is definitely more powerful and lighter with the cutout open..

with the cutout closed... the gasses will be forced to go through a very restrictive s-flow muffler...hence car feels heavier and choked...definite power loss there

oh n my pipe setup... with it open...its like a straight flow already.

where can i get one...!!??
try reading instead of just looking at the pretty pictures.
 

Wanggot

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Wanggot

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Last time I used the manual 1.... Need to pull the cable when see roadblock hehe... Noawadays got motor and surely with proper swtch....
 

BonesGarage

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With all due respect, I think we should not publicise too much about valves like these. JPJ and Puspakom dudes might be lurking around zth, next thing you know, they will be well aware of this mod and call it illegal. Then we can't go thru inspection d

Just saying
 

AD_EG

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AD_EG

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About this exhaust. quite a few people have already been using it for quite a while, using the throttlebody mods. the guy who intro this to me was the ex owner of madmans car.

I used it on my 4g15,18c and b20....and it all played a very important role in performance...you will definitely feel the improvement...on WOT. its really great for those who need a balance of chillout quiet town driving and by just a thug/pull/twist...your world takes 180 degree spin.

The ones i have seen - using throttlebody. You either pull and clip the hook(not very nice in terms of comfort n cosmetic), or some guys have nicely modded using those bicycle gear lever where you just push n release(this is the best ive seen so far).

Only problem is, maybe due to carbon build up, or pressure, in tends to jamp up a bit...so just need to get it lubed so its nice and free every once in a while. but definitely worth it...the mod for the throttle could cost between 200-300+-. normally we will change to a silent muffler at the same time.

Having said this, if the manual ones also tend to jam up, im not sure how long will a electronic/motorized last...
 

ddv_nk12

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This has been in the market for some time now. It's pretty impressive and I wanted to get one too. But now since that the reliability of this item has been brought up, I'm holding back just yet.
 

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haiiiiiiiiiiiii.... nice little gadgets like this don't really work for automatics....
 

Temujin

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Temujin

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This would be awesome as it can enable us to have side exhausts..

Approaching JPJ roadblock, flick the switch, and voila.. less decibles as it goes through the rear muffler..

Pass JPJ roadblock, flick the switch, and voila.. straight pipe to side exhaust with flamesss..

Awesome!
 

Mr.JY

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Those videos shown are more towards giving the 'growling' sound to the stock cars, and slight improve in performance. Won't contribute to those cars who are already LOUD and modded, I think... :hmmmm:
 

Wilson13B

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haiiiiiiiiiiiii.... nice little gadgets like this don't really work for automatics....
Why say so?

Last time when i using this type of system on my Suzuki Swift 1.5,the result was awesome......it sound like a VTEC somemore at high rpm ~
 

wfd9766acik

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considering local wheather & having that only one car i hev, is it water resistant/ water proof?



Ever wanted to change the volume of your exhaust on the fly? Some aftermarket exhaust systems already have integrated bypass or reroute valves built in to instantly turn a street legal sports exhaust boom into an all out racecar growl. A very naughty toy indeed.

Electonic cutouts installed on BMW E90 M3 Sedan - CES MOTORSPORT - YouTube

Some time ago I was actively searching for a cost effective solution to these exhaust cutout systems that can be sandwiched into the existing install but have found very little options that were electronically activated. Some early Apexi models operated through a cable piped into the cabin and triggered with a tug. There were also DIY-ists out there who fabricated their own with the clever use of a modified throttle body



Fortunately electronically operated ones are now made more available with more aftermarket manufacturers jumping on the bandwagon. These electronically operated versions are wired to a motorized solenoid that shuts or open a bypass valve. It also has flanges on both ends for ease of installation and removal.



Where there are sought-after products, cheap knock offs will follow. But not that anyone patented the idea in the first place. It's just nice to know people make cheaper alternatives. I found this on the marketplace just hours ago posted yesterday by andysky5, a regular here. Priced at RM580, it is not spare change nor can I comment on it's value either. But if one ever drooled over such a toy, it's quite the affordable route. Virtually stealth when the valve is closed, one can finally avoid detection from the authorities, the wife, or the parents. This is not a paid ad just in case.

For Sale: Exhaust Cutout Valve - Electonic



Application wise, you can have it bypass the mufflers altogether for the ultimate flow in forced induced cars or you can bypass certain restricted sections of the rear mufflers to achieve a louder tone, but not too overwhelming. Ultimately, the cars that will benefit most from an exhaust cutout valve are the turboed ones. NA cars, more novelty, yet priceless when a 6 or 8 cylinder is let to scream in the open. - at will

More videos of the possibilities :)

HEMI Dual Exhaust Cutout Valves- Engine Running - YouTube

bmw m5 electric cut out dmh performane - YouTube
 

wfd9766acik

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helo bohh,

can ask ah?
1) wer (shop) u installed?
2) rm?
3) set back of using it - maintainence etc?
4) still using it ah? no? y?

appreciate if u can share bohh

cheers

Why say so?

Last time when i using this type of system on my Suzuki Swift 1.5,the result was awesome......it sound like a VTEC somemore at high rpm ~
 

mADmAN

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wat yellow exhaust shop??? so many exhaust shop uses yellow signboard these days... just post up the shop and the location...no point wanna cover-cover.

and the price quoted....is it INCLUDING the QTP and all the works? or just the QTP?
 

davidcnz

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hi guys,

rev performance is selling this at quite a bargain, i went to a "yellow" exhaust shop in sunway and was quoted 1500 for a QTP branded one. I really liked the finishing and found this

Products > QTP Electric CutoutsStandard Kits > Single Exhaust Vehicle Kits
perhaps the shop u mentioning it's EVERCO , SUNWAY... ? Beside Everco , N1 Racing it's one of the dealer of QTP also..but i'm not sure N1 Racing still having network with QTP :)

http://www.quicktimeperformance.com/locator/InternationalDealers.php
 

Izso

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Why say so?

Last time when i using this type of system on my Suzuki Swift 1.5,the result was awesome......it sound like a VTEC somemore at high rpm ~
Well, my car is already annoyingly loud and it's a S-Flow 'quiet' muffler. Unless I find something quieter than this it'll be pointless and how would a "straightflow" work on a 3-speed auto?
 

phantomRX8

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this thing can be put either in parallel to the existing exhaust or put in series..i put it in series. i too have a loud s-flow muffler hehe..but i think i am going to try the parallel installation after this..mine's is arospeed brand..rm 220 from kakimotor..it is the manual lever type..got 2 inch or 2.5 inch..enjoy!!
 

Wilson13B

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Well, my car is already annoyingly loud and it's a S-Flow 'quiet' muffler. Unless I find something quieter than this it'll be pointless and how would a "straightflow" work on a 3-speed auto?
I see.... but a straightflow on a auto will definitely kills the low end torque,this will made daily driving difficult and FC suffers ~

The purpose i install a exhaust cut out is to make my Daily drive quiet and have good low end torque,using centre bullet and S-flow rear muffler....but once i get to a mountain road like Genting.etc,i ill open the cutout,this will provide much more power gains from mid to high rpm's but the low end suffers =)
 

darkness3299

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tried it last time and it didn't last long. throttle body jammed after some time and indirectly let the exhaust fumes in my car. throw it away and just maintained using the straight flow exhaust instead.

i used the throttle body with the bicycle lever last time. it was fun tho really. :smile:
 

cush86

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shop is everco in sunway, if u guys interested in qtp,i can get it in at 700 a piece.
everco selling 1.5 and 1.8 with installation.
 

upontheriversky

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upontheriversky

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Wouldn't that be atrociously noisy when fully open and horribly restrictive when both are closed?
what i meant is by default it would operate on full exhaust system but when the switch is flicked, valve on full system closes and the one on open header opens
 

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what i meant is by default it would operate on full exhaust system but when the switch is flicked, valve on full system closes and the one on open header opens
So meaning you'd need two mufflers or two systems and wouldn't that have a huge weight penalty? I'm too confused to imagine what this looks like
 

cush86

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u just need a y pipe replaced by ur single piping before your current sflow or straight flow box. so meaning just right after ur flexi hose to get a louder version.simple attach the motorized cutout on the other end of a y pipe n use ur imagination for the rest bro:) hope this makes sense
 

corollagtouring

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corollagtouring

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IMHO Better use mechanical type...

This is Apexi valve controller... AUD 190
Mechanical
I always spotted this at halfcut exhaust...

Hot exhaust fumes+motor electrically controlled = not a very good cocktail
 

[PIMPIN]

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[PIMPIN]

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If you must, buy the mechanical one by Apexi. The electric one firstly needs wiring - its 5 inches long if that so you need to extend the wiring into your cabin to which it attaches to a Proton Saga mirror switch or something like that.

Will cost you RM580 and will fail after less than two days. Mine MELTED. I have pictures will post later. Receipt even to prove it was 2 days old but I don't want to ruin vendor reputation or anything.

It's not vendor's fault, its a design fault.