What an amazing idea: ATP Turbo Virtual Exhaust System

[MarkEmark]

Just came across this while looking for the oil supply line restrictor...

http://www.atpturbo.com/root/r...4.htm



I can't believe what an amazing idea it is.

Basically, it's a straight section of pipe that is welded into your downpipe or some part of the exhaust before any bends/restrictions/mufflers/resonators. It has an internal wastegate actuator diaphragm and then something that looks like a throttle body...You hook the wastegate up to a boost source, and every time you start making boost, the "throttle" plate opens and dumps all of the exhaust, before it hits any restrictions in your exhaust system.

So basically, you have the best of both worlds...during start-up, idling, and cruising outside of boost, your car is nice and quiet and doesn't draw any attention, nor do you smell any of the noxious fumes if, like me, you're running just a glass-pack at the end of a downpipe. But once you go full throttle, you have all the performance benefits of running the engine with just a downpipe.

I can't believe no one has mentioned this around this forum yet (or maybe they have, and I'm just too lazy to search). I'd LOVE to get one, but at $235 it's rather pricey...but the whole idea is ingenious to me.

Just thought I'd share, because to me, this seems like a perfect solution.

[anyotherone]

In their demonstration video that GTi sounds pretty mean. I had an electronic cut-out on my WRX... it was a cool idea but I never got it to seal right, so I took it off. Maybe these units are better made... and the whole opens on boost thing is pretty cool.

[crzycav86]

I'm going to make one using a spare throttle body. Itt might have problems sealing, but if I can make one for $10, why not?

[GEO]

Yeh me and Structure were talking to these guys at SEMA. Although its a great idea, its not really sleeperish. Unless you find away to hook up a virtual intercooler setup But yeh, it would be alot quieter.

[Craving4Boost]

i believe i already brought this subject up before hehe

[Craving4Boost]

i'm getting one for sure...it cost about half of a 3" full exhaust yet it basically does the same thing...and i live about 40 mins from the actual store so i can just pick it up and ask them questions face to face..they're really nice people

[onosqv]

i believe i already brought this subject up before hehe

As did I, hehehehehttp://forums.nicoclub.com/zerothread?id=121414

[Craving4Boost]

it seems a lot of people say 3" isnt loud at all. yes it sounds nice and yes its not as loud as everyone says it to be..but nonetheless..its still loud. i, living in the city (san francisco) have a brother will exhaust and he usually comes home late. next morning we saw 3 BB pellet holes in his window

[turtl631]

LOL! that sucks dudeI don't like how the exhaust exits at a 90 degree angle from the main flow. Would it have been hard to make it merge at a less severe angle?

[Structure240sx]

GEO was referring to QuickTime performance that makes the electric cut-outs for a few cars, like wrx's

this thread is about a boost sensitive cut-out i would definitly run if i build another street car

[crzycav86]

LOL! that sucks dudeI don't like how the exhaust exits at a 90 degree angle from the main flow. Would it have been hard to make it merge at a less severe angle?

You could make it merge more aerodynamically, but the air smashing against the butterfly might make it more prone to leaks. That's what I'm guessing anyway.

[toki]

that **** is gaaayyyyyyyy

[GEO]

GEO was referring to QuickTime performance that makes the electric cut-outs for a few cars, like wrx's

this thread is about a boost sensitive cut-out i would definitly run if i build another street car

THanks for teh correction sturcture. My abd I typed that out without even thinking about it this morning.

[GEO]

GEO was referring to QuickTime performance that makes the electric cut-outs for a few cars, like wrx's

this thread is about a boost sensitive cut-out i would definitly run if i build another street car

THanks for teh correction sturcture. My abd I typed that out without even thinking about it this morning.

GEO was referring to QuickTime performance that makes the electric cut-outs for a few cars, like wrx's

this thread is about a boost sensitive cut-out i would definitly run if i build another street car

[cyrus240sx]

for the slepper intercooler setup you could always have a water/air intercooler

[sanioll]

very good idea.

dont get too excited, only vehicles equipped with a little high backpressure exhaust systems(aka stock) will benefit from it.

Not recommended for you, performance freaks.

think about all the hassle too, taking it out during inspection time, depending what state youre in trouble when getting pulled over.

overeall i like it, dyno chart looks very smooth.http://www.atpturbo.com/root/r...o.jpg

i say measure your backpressure, and if you're not satisfied with your current setup, then grab the product.

[WDRacing]

Been around for years, http://www.summitracing.com has cutout's for cheap. Just remove the cap when racing, or get an electric actuated version.

[MarkEmark]

Been around for years, http://www.summitracing.com has cutout's for cheap. Just remove the cap when racing, or get an electric actuated version.

I've known about those available from Jegs and Summit for years too, but that is not convenient at all...needing to get under the car and remove it every time you feel like making more power, may as well get under the car and remove a straight section of pipe (which I often do) so that you're just running a downpipe. Just as easy to do and convenient. And an electric one isn't nearly as convenient, unless it's programmed to come on at a certain RPM. Otherwise, do u need to hit some stupid switch every time you punch the gas and want more power?

The ATP one makes leagues more sense to me, and you never need to worry about taking off any caps or hitting any switch, and since it's not electric, there's less chance for failure.

Also, even with a 2.5" mandrel bent performance exhaust, as long as the exhaust has a muffler (and/or a resonator), it will still offer restriction for those looking to make high HP on a KA-T (again, I know from personal experience). Even those running 3" exhausts I'm sure feel like their cars are more powerful if they run just a downpipe versus if they run the whole system, including muffler. Also, $235 is a LOT cheaper than upgrading to a full 3" exhaust (which I was thinking of doing, and which costs $500+).

Plus, if you've never run a KA-T with just a downpipe before, then you wouldn't know the second main reason for wanting this boost actuated exhaust cut out: the intoxicating sound of a boosted KA WOT. A non-muffled KA-T will sound 10x more bad-*** than any KA with an exhaust. Trust me.

I feel like I'm a sales rep for the company, but honestly, it's an amazing idea.

And I doubt the "exhaust gases smashing up against the buttefly valve" would pose much of a problem. Gases look for the least restrictive route out, and they wouldn't (excuse my personifying inanimate particles here) be stubborn and push up against something that's not budging when they could just go down the rest of the exhaust. And if some gases do happen to escape from the butterfly valve, they'd probably be undetectable, to both the ear and performance.

Just my $.02

[w1ngzer0]

it seems a lot of people say 3" isnt loud at all. yes it sounds nice and yes its not as loud as everyone says it to be..but nonetheless..its still loud. i, living in the city (san francisco) have a brother will exhaust and he usually comes home late. next morning we saw 3 BB pellet holes in his window

nothing like annoying exhuast rolling down the neighborhood @ 1-2am.

[Craving4Boost]

i rather that then those fudging harley bikes...omg..10 in the morning roaring down the street

[Jookmasta]

i dont know. my exhaust is fairly quiet (BRM) with no cat or resonator. u cant hear me coming down the street, only when im revving to get over the hump in my garage. its a good idea but ur nearing the price of a custom exhaust for that thing. plus im sure 235 bux could go to something else. ingenious idea tho.

[Craving4Boost]

235$ isnt so bad though...for what it does i think its a fair price...maybe on the expensive side though probably because of the internal wastegate...anyways i wouldnt get this if i had a small turbo though like a t25...it would just keep on openin and would lose its "sleeper" characteristic

[SSS]

I contacted McCord who make the Power Plate which is an electronically actuated version, but something tells me i won't hear from them. Their unit is $110 USD.

I also contacted Quick Time Performance who sell the same as the power plate for $155 USD, but they wanted to charge me $90 USD for shipping to australia which is BS, i know for a fact it's only around the $30 mark to ship OS for something that size and weight.

So i'm going to make my own design using a stepper motor and controller; can anyone suggest a reason why i would not use a stepper motor with the correct controller as opposed to a conventional DC motor with a PWM controller?

[WDRacing]

I have an open wastegate...pretty loud at full boost. I don't like loud all the time, so the y cutout is better for me.

[Not_a_sr]

had one of these virtual exhaust things come into the shop today, the kid owns a Vdub , it had broken, the actuator where it attaches to the device broke off, then it sheared off at the flapper. how i dont know??? but the kid wanted me to fix it, i told him to take it back, he did nothing but complain about atp and its products, from what i could see the welds were kinda blah, but i have never had anything bad come from them, infact i often recomend them on stuff i cant get. i dont see how this thing really broke. its not under a whole lot of stress at all.

[Craving4Boost]

wow that really sucks....i only live about 40 min from them so i would go back and ask them wth is going on. they are really nice people though im sure they work something out...

off subject..but i saw this girl working there and she had 3 turbos in front of her while she was sittin on the table...my god it was like a dream come true...