My exhaust dump (2.0T) [Archive]

Phrost

08-13-2008, 08:50 PM

There is currently another thread, but I feel the title/subject is making it lack views. This will be an overview of my install, impressions, and a free for all for any questions of people interested. Video posted in post #22!

For my attention getter, I give you my install completed as of today.

Blurry, but this is how far it hangs down. Barely at all, so notice there is plenty of room to run a cut-out.
http://i307.photobucket.com/albums/nn301/Sprink1es/IMG_9062.jpg

Position. I wanted to mount it further up and only on the downpipe, but the center differential was there and I didn't feel like welding it in there. It replaced the exhaust sleeve, so my exhaust system is one solid piece right now [eek]
http://i307.photobucket.com/albums/nn301/Sprink1es/IMG_9068.jpg

This picture shows how it sits right after the differential, but over an inch away from the driveshaft for plenty of clearance.
http://i307.photobucket.com/albums/nn301/Sprink1es/IMG_9065.jpg

Mounting the switch. I was going to put it in the glove box for a clean install, but didn't feel like opening it and reaching in there all the time (since I like to play with it [cool]). Instead, I put it in the cubby hole under the steering wheel. Hole is drilled next to where the switch is laying:
http://i307.photobucket.com/albums/nn301/Sprink1es/IMG_9067.jpg

Toggle switch is easily reached, even with the manual in there. Out of sight, and in hand in under two seconds
http://i307.photobucket.com/albums/nn301/Sprink1es/IMG_9072.jpg

Phrost

08-13-2008, 08:51 PM

Information about exhaust cutouts, or exhaust dumps.

When I got my first 1.8 turbo, right away I started looking for exhaust solutions. I looked at tons of $800+ cat-back systems, then I came across some suggestions to buy a dump tube. I figured a dump tube would free up my exhaust and give me the least amount of back pressure possible, so I would get the best results from it.

I then learned there are two types of dump tubes: pneumatic and electronic. Pneumatic dump tubes are activated by a vacuum line, and the butterfly valve opens whenever you get into higher boost. Electronic dump tubes have a physical switch, so you can have the dump open/closed or any position in between.

I figured the obvious solution would be the electronic dump, but it had a higher potential to break. Since it uses an electronic motor, you can put stress on it by trying to open or close it further than it can go. I went ahead and bout the 2.5" electronic dump from Quick Time Performance (http://shop.quicktimeperformance.com/cart.php?m=product_list&c=4) for a cheap $205 plus shipping. I only had to pay maybe $35 to get the y-pipe welded in, so this setup is less than half the cost of any respectable cat-back system.

Phrost

08-13-2008, 08:51 PM

What you need to know if you purchase an exhaust cutout.

No matter which type or brand you choose, I think all of them are supposed to be "maintenance free". But this is BS. They are not lubricated or sealed very well, so before you install yours you need to saturate the shit out of it with antiseize or some similar compound. My first one completely seized after one winter in Wisconsin (daily driver) so I had to purchase another one.

So when you get yours, the first step is to lubricate all of the moving parts. I chose to use antiseize (found at any parts store), which I think is the best way to go. Here is what mine looked like after I worked the paste into/around where the shaft twists around:
http://i8.photobucket.com/albums/a12/Phrost786/IMG_8592.jpg

It is important to lube it right away, and probably clean the housing every once in a while. I didn't touch my first one ever, and this is what it looked like after almost one year...
http://i8.photobucket.com/albums/a12/Phrost786/IMG_8587.jpg

Tons of carbon deposits, and completely seized up and not moving. So don't be like me and have to waste $110 on another cutout body!

Auditude2.0T

08-13-2008, 08:55 PM

Nice. Im getting mine done Friday along with installing my downpipe. I will do three dyno runs.

1) Pump Gas with Full Exhaust
2) Pump Gas with Dump valve open
3) Repeat 1st

Phrost

08-13-2008, 09:05 PM

Awesome [wrench], that will be wonderful to have those numbers.

Upon opening mine, I notice much better throttle response, and turbo lag in higher gears seems to be better. I have no numbers to prove anything, but those are my impressions.

Also, holy shit is this loud when paired with a test pipe! It is MUCH louder than when I had it on my 1.8T with oem cats. and instead of "farting" when you let off the gas (as you test pipe people all know), it goes "AHHHHHHHHH!!!!!!!!" [>_<]

Auditude2.0T

08-13-2008, 09:12 PM

does the exhaust pop.

audirs

08-13-2008, 09:16 PM

looks good. thanks for posting this. this was exactly what i was looking for my exhaust!

AlexK

08-13-2008, 09:16 PM

Put up a youtube clip, I wanna hear this thing!

Auditude2.0T

08-13-2008, 09:19 PM

even a cell phone video

Phrost

08-13-2008, 09:32 PM

does the exhaust pop.
When I had it on my 1.8T (stock exhaust) it would backfire in 1st/2nd gear if I revved it past 6,000rpm.

I drove around with it open for an hour tonight, and did not get a backfire. It is fucking loud, it is really gurgly and makes lots of little popping noises, and when I let off the throttle (with a test pipe) it makes a big POOP noise instead of the old fart sound.

I can do a cell phone vid, but I have an old camcorder that works better... but that's really hard to edit and get online. Tomorrow after work I can get something up, and hopefully it isn't too shitty.

Phrost

08-13-2008, 09:35 PM

I was just thinking that my Digital Rebel can not take video, but my girlfriend has a Canon Powershot that takes decent video... I will use that tomorrow and get something cool for you guys [:)]

Story time:

I was driving down our Main Street with my exhaust at like 150dB, and watching for cops all paranoid while I was having my fun. I car familiar headlights, but it was unmarked and had a normal plate and didn't look like a cop. I said whatever and kept going, then it turned it's lights on [o_o] and pulled over some old Bronco in the next lane and two cars behind me [:D] suckaaaaaaaaaaaaaaaa, nobody suspects the Audi [wrench]

Auditude2.0T

08-13-2008, 09:40 PM

lol thanks phrost. i cant sleep till i hear this vid. call your girlfriend and get her phone now

Phrost

08-13-2008, 09:45 PM

She is sleeping in my bed right now, and her camera is somewhere in my bedroom.

But it's late, and I have to be at work at 5am in 5 hours, so no can do tonight [:(]

Auditude2.0T

08-13-2008, 09:46 PM

She is sleeping in my bed right now, and her camera is somewhere in my bedroom.

But it's late, and I have to be at work at 5am in 5 hours, so no can do tonight [:(]

is that her in your sig?? if so your one lucky guy.

Phrost

08-13-2008, 09:47 PM

No I don't date 15 year olds [:D]

But last weekend, my friend's little sister who is 17... ...ah nevermind

Auditude2.0T

08-13-2008, 09:48 PM

im 17.

Phrost

08-13-2008, 10:04 PM

But I'm turning 42 in 1 month

vtracer20

08-14-2008, 06:47 AM

vid plz

minameismud

08-14-2008, 08:52 AM

Phrost, because it's not in the new user faq and i'm too lazy to find a tape measure, what size kit did you buy from QTP?

Phrost

08-14-2008, 03:36 PM

Our exhaust where I mounted mine (the downpipe) is 2.25". Actually... My y-pipe is 2.5" since my TT exhaust was 2.5", but the shop said it would fit right over the 2 1/4" stock piping like a sleeve (which it did) so that is why it looks a tad bigger.

Hell, I already had it and wanted a free dump [:)]

I took some quick vids, I'll try to get them up right now.

korbis

08-14-2008, 04:30 PM

Phrost I went to my local muffler shop and got the Y-pipe installed. I haven't ordered the exhaust dump yet, but is sounds so SICK!...imo.

I currently have a custom magnaflow exhaust setup and the exhaust note disappears after 4k rpm's. After installing the Y-pipe, it growls and low rpm's and screams through out the rest of the power band.

One question though, is it ok for it to always be open?

spanks [:D]

Phrost

08-14-2008, 04:54 PM

Here is a quick video

http://www.youtube.com/watch?v=hb480ep3SxE Note: right under the video, you can choose to "watch video in high quality"

Sorry it is kind of crappy... My gf's Powershot has a shitty microphone, I had to hold it so the microphone would be be covered up, and I wasn't used to a piece of shit girly little wrist strap fluttering around so that is a little annoying. It'll do for now though

Vorsprung

08-14-2008, 05:34 PM

oooo sounds boomy or something i dont know how to explain it and LOUD. hehe

Phrost

08-14-2008, 05:39 PM

My video makes it sound quieter than it really is. It doesn't capture anything but WOT really, so take this as a sample of what it is kind of like [;)]

At 1:01, I actually got a very loud backfire (which is why I jerked the camera because I was scurrrred) but the camera barely even captured it. Only backfire I got so far, but it is really poppy/gurgly when you let off the throttle.

korbis

08-14-2008, 05:44 PM

Here are a few videos that I asked permission to post.

My little brother was recording and I believe he developed ADD in the making of these videos.

They are a lot [:D]

http://www.youtube.com/watch?v=VFGszoo_im8

http://www.youtube.com/watch?v=IheGsg7-O9Q

http://www.youtube.com/watch?v=TgX-FhOSSS4

http://www.youtube.com/watch?v=dEle8IxTXq0

http://www.youtube.com/watch?v=ypL70O3EJLs

http://www.youtube.com/watch?v=I5WrYmvhwKY

http://www.youtube.com/watch?v=OVnuJW5_nKo

http://www.youtube.com/watch?v=iC-0wNRO4_A

http://www.youtube.com/watch?v=7fD4RxFyIXs

http://www.youtube.com/watch?v=BRE7mX2mYTM

http://www.youtube.com/watch?v=WbZ0S59yNw0

Phrost

08-14-2008, 05:47 PM

That's cute, you guys are all fighting and shiznit [:p]

Sounds better than my video [up]

korbis

08-14-2008, 05:56 PM

Thanks my good sir [:D]

Auditude2.0T

08-14-2008, 07:22 PM

that sounds nasty im getting mine done either friday, Saturday or Monday.

Phrost

08-14-2008, 09:40 PM

korbis doesn't seem to really get on it or drive at WOT in any of his vids. Honestly. with my 1.8T (and no test pipe) it was just loud... but with my 2.0T (and ECode test pipe) it is muthafuckin loud! Very very holy shit. I'll try to find someone with a good camera in the near future to capture the true sound of what you get.

Auditude2.0T

08-14-2008, 09:41 PM

Phrost

08-14-2008, 09:46 PM

Yes, but I don't want curious people to watch the videos and think it's not that loud. It fucking hurts my ears if I drive past cars/walls (or through that tunnel [:D]) so it is serious business.

Idle is actually very quiet, driving normally pretty much sounds like your exhaust fell off, but getting on it sounds like a V8 with straight pipes. Not for the faint of heart [evilsmile]

Auditude2.0T

08-14-2008, 09:47 PM

IT SOUNDS LIKE A V8!!!!???!!!???!!! OMG MY DREAM. lol

Phrost

08-14-2008, 09:51 PM

You know what I mean, foo. People think AWE + test pipe is loud, but they don't understand [cool]

Auditude2.0T

08-14-2008, 09:52 PM

lol this thing is going to be dragster loud when your on it. I can't wait to set off car alarms like crazy.

Phrost

08-14-2008, 09:59 PM

Everyone stares at me, ricers think I'm in some sort of a drag car because it's loud as fuck and faster than them, and normal people floor it at me just being stupid then have to freak out and plug their ears as I floor it in return and pass them when their windows are down.

Shit is fun [drive]

Auditude2.0T

08-14-2008, 10:04 PM

u sound like a fat kid at a buffet.

Phrost

08-14-2008, 10:14 PM

oh god I could use a buffet right now. fucking OM NOM NOM NOM

snosk8tr123

08-15-2008, 01:31 AM

minameismud

08-15-2008, 05:01 AM

do-want.

but i gots nothin else goin on in the go department, so it's essentially ricing. bummer.

Vito Roma

08-15-2008, 05:26 AM

nice post

Phrost

08-15-2008, 04:08 PM

I understand that its loud, but is it honestly TOO loud? I'm 17 years old and I like loud exhausts, but I don't like it when it's super annoying and drones and hurts my ears. Is it a nice sound??? Also how well does the valve open and close? Can i close and open it as much as i want? Does it open half way to get half the sound, or is it all or nothing?
P.S. I have eurocode testpipe also

It is definitely illegal and noticeable on public roads. There really isn't any drone, it's just really loud and obnoxious when you get on it, but it's not like it gives me a headache or I need earplugs or something. It sounds exactly what you imagine in your head when you picture straight pipes on an A4 [:D]

The valve operates with a toggle switch, so you can leave it cracked open or anywhere you want it. 100% open is just the butterfly valve laying flat.

snosk8tr123

08-15-2008, 07:47 PM

and it supposedly has more gain than any exhaust right?

Phrost

08-15-2008, 09:49 PM

In theory, yes, because it will open your exhaust up the most and create the least amount of back pressure.

I just took a friend for a ride (11 at night) during a party to show him my car since he has a 2.0T Saab and thinks it's really quick. It was a nice night so we had all the windows down. I said, "watch this" and opened up the exhaust dump... the car gave off a slight vibration as a gurgly thunderous noise suddenly appeared from under the car. As we pull away from the stop sign in the quiet residential neighborhood, I slowly roll on the throttle and scream all the way up to 6,000rpm in second gear. All that could be heard was the wwwwrrrrrrRRRRRRRRRRRRRRRRRRRRRRRR from my obnoxious dump tube, and the sound waves echoing back off the dark, quiet houses we were passing. Shiiiiit yo, we'z wakin up babies n sheeet

snosk8tr123

08-15-2008, 10:41 PM

Phrost

08-29-2008, 06:21 PM

Got a few updates for you peeps.

First, I've been casually using this dump over a full tank of gas, and realized I only drove about 200 miles and have less than a quarter tank left. So with the same driving style and routes, my mileage went from about 24-25mpg to 19-20mpg [>_<] I didn't change anything else, so it has to be from having a straight turbo exhaust. I guess my car decided I have such little back pressure, it needs to dump a shit load of fuel into the engine when I get on it [up]

But this leads me to believe that any aftermarket system, providing less back pressure, may give you worse fuel economy. Anyone agree or disagree with this?

Second, I got my ass pulled over at 11:30pm two nights ago, because I had my dump open. I was leaving a bar to drive a friend home, and thought it would be fun/funny to open the dump and rip it around some corners for some ear piercing pleasure. Well yeah, I had a few but was alright to drive, but the officer was still a very nice man to let me go with nothing but a warning for "illegal exhaust". He didn't know what it was and that I closed it right away, he just knew it was fucking loud. This is legal, you just can't open it on public roads [:o]. So learn from my mistake, gentlemen.

Vorsprung

08-30-2008, 05:18 AM

I always heard that an exhaust improved fuel economy, that could be only on a N/A car tho..??

Alkemix

08-31-2008, 02:01 AM

But this leads me to believe that any aftermarket system, providing less back pressure, may give you worse fuel economy. Anyone agree or disagree with this?

First off... I will say that you guys know probably 15x more about cars than I do. I am just filling in with my own quick logic.

I'm thinking that maybe it's not the lack of backpressure that is causing your lowered fuel economy. Maybe with the exhaust escaping as quickly as it is, it's true like you said that it's dumping more gas in, but thats only because the intake is insufficient in some way to make up for extreme efficiency in the escaping exhaust vapors and is demanding more fuel as a result, since it's not able to get more air, so technically less back pressure doesn't hurt fuel economy, until you get to a point where your exhaust is dumping faster than your intake can recover.

That was a long and shitty run on sentence, but I'm sure you get what I mean.

RAUDY

08-31-2008, 08:52 AM

wow this is a funny post. man phrost when you describe bombing those poor sleeping folks... ha ha ha!

A4addict

08-31-2008, 02:37 PM

http://i8.photobucket.com/albums/a12/Phrost786/IMG_8592.jpg

You have very beautiful hands.

Phrost

09-01-2008, 04:00 PM

I use pink scented lotion daily and just got a manicure before I took that picture ::blushes::

rams456

10-28-2008, 09:11 PM

There is currently another thread, but I feel the title/subject is making it lack views. This will be an overview of my install, impressions, and a free for all for any questions of people interested. Video posted in post #22!

Position. I wanted to mount it further up and only on the downpipe, but the center differential was there and I didn't feel like welding it in there. It replaced the exhaust sleeve, so my exhaust system is one solid piece right now [eek]
http://i307.photobucket.com/albums/nn301/Sprink1es/IMG_9068.jpg

This picture shows how it sits right after the differential, but over an inch away from the driveshaft for plenty of clearance.
http://i307.photobucket.com/albums/nn301/Sprink1es/IMG_9065.jpg

did you have to cut through your exhaust to mount the y pipe?

Phrost

10-28-2008, 09:29 PM

did you have to cut through your exhaust to mount the y pipe?

Yes, where the y-pipe sits is where the sleeve used to be.

When you get it removed (going back to stock), they just take the sawzall to it again, and try to cut where the bead is from the weld. Then they just weld a new section in, so I just kept the sleeve they cut out for this reason.

Anyone can sawzall their exhaust off to do this, but welding a good bead around the circumference is pretty tricky.

E46HoodRich

10-28-2008, 10:04 PM

what is louder this exhuast dump or vmr test pipe with str8 pipe all the way back from the test pipe.(no mufflers or resonators)???

Phrost

10-28-2008, 10:06 PM

I would guess the dump tube would be louder.

But I had a test pipe in before I had the dump installed, so I can't compare.

turbofreakk13

10-28-2008, 10:13 PM

ordered mine today from quicktime performance. extremelyyy excited, cant wait. will post pics and everything when I get it installedd

Phrost

10-28-2008, 10:32 PM

Cool cool [up] Just please remember to lubricate the entire thing (see post #3) so winter doesn't kill it. Also, if you plan to mount yours where mine is, the oem exhaust diameter is 2.25" I think.

I'm almost thinking of cutting a shitty cover the size of the aluminum body to bolt on just so my QTP piece doesn't get covered in salt and shit this winter.

jimmya4

10-28-2008, 11:44 PM

did you remove that cross plate??? my crossplate is the first thing to hit if i bottom out over anything... i dont want my hole exhaust ripping out from something snagging the cut out.

Phrost

10-29-2008, 08:00 AM

Yes, the cross plate is removed. I would have reinstalled it, but now it won't fit because the dump is in the way.

I've scraped this thing plenty of times on my last car, but never really "snagged" it. But the housing is solid aluminum (which is soft) so the first thing that would happen is you'll get a huge scrape or a chunk missing from the aluminum housing worst case scenario. I wouldn't worry though, the exhaust system has a flex pipe and rubber mounts to allow for it to move around, if the dump tube hits some sort of a lip, it will probably just get kicked up and not do any damage.

So bottom line is I wouldn't worry about it, and if you can't help it then you'll have to have a custom cross bar thingy made. But seriously, this is how low the dump sat on my last car and all I did is scrap it once in a while:

http://i8.photobucket.com/albums/a12/Phrost786/qtpdumpi3.jpg

and that car was slammed too

vtracer20

10-29-2008, 08:11 AM

not my cup of tea especially on a audi...

jimmya4

10-29-2008, 06:01 PM

sdjeff

10-29-2008, 06:58 PM

this is deffinetally my cup of tea on a 4 cyllinder awd stick shift turbo. audi or not. anyways, thats pretty dang low and my car is lowered and there are a few bumps that i have to drive over every day that my cross plate clears by less then a finger nail. is there anyway to get it equal to or better than the cross bar.

You could mount it where i did after the resonator. It won't be as loud (sounds like putting an exhaust on the car) and they exit between the rear wheels so unless you're crossing things sideways than it won't rub.

Phrost

10-30-2008, 06:05 PM

is there anyway to get it equal to or better than the cross bar.

I think where I have it is about the best place with the most room, unless you did something custom and welded it onto a test pipe/downpipe and had another pipe coming down or something.

It looks like mine hangs just a tad lower than where the cross bar sat, but I'm not positive. I could have rotated up up a little bit more, but I didn't want to risk rubbing on the drive shaft.

There is another company who makes a similar exhaust cutout, and the motor is much smaller. http://www.dmhperformance.com/ecutout.htm With this one, you might be able to rotate it higher and have more clearance. Hell, the aluminum body itself looks a little smaller. You could always file it down though, or do whatever you have to.

Phrost

10-30-2008, 06:09 PM

not my cup of tea especially on a audi...
Don't be like that [:p] My purpose for doing this is not to drive around with it open all the time and be as loud as possible. I did it for drag racing, because not only is my car 100% legal when it's closed but with it open I have the smallest amount of back pressure possible. Function function function [up]

You could mount it where i did after the resonator.
Post a pic!

turbofreakk13

10-30-2008, 11:01 PM

i just received my cut outs today, sh*t looks official. Headin over tomorro morning to get it installed. will have pics and vids up as soon as i get everything done. cant waitt

sdjeff

10-31-2008, 12:42 AM

Post a pic!

This is the only pic i have.. had to do duals of course.

http://i30.photobucket.com/albums/c330/punkerjeffy/cutouts.jpg

dreamcar=rs4

11-04-2008, 05:41 PM

This is the only pic i have.. had to do duals of course.

http://i30.photobucket.com/albums/c330/punkerjeffy/cutouts.jpg

Damn I'd be nervous to go over a speed bump in that thing. But the idea of being able to switch from a really loud exhaust to a semi loud exhaust makes me want to do it.