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  1. #1
    Senior Member Two Rings
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    IT'S HERE - AIR SUSPENSION DUMPBOX DIY

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    At the risk of becoming the most hated man on this site and pissing some people/companies off, I went ahead and wrote up a DIY on making a dumpbox for you guys out there with factory Air like myself. The items in the list are clickable links to all parts on amazon if you download the file. If at any moment reading the DIY you are not comfortable with any part of it, I STRONGLY recommend you purchase a premade dumpbox from one of the many companies who provide them instead... This is a project for those that like to tinker and have a general knowledge or background of tools/electronics/building things.

    DIY PDF LINK HERE:
    https://drive.google.com/file/d/1mnO...ew?usp=sharing

    As mentioned, if you guys have any constructive criticism or questions or need any help, you can post your pics here and I will do my best to help however I can... There is some stuff I may have left off the DIY because I did it after the fact, below you will see my revisions/additions/edits as a living doc:

    Rev - 10/1/22

    1. 12v power supply I was not clear with how I installed/ran power. Reference Image below. You will cut the line a the specified cut point, then strip off about 1/4in of the protective plastic sheath for each sides positive and negative wires to expose the copper line inside. When you cut the line in half the idea is that it creates a male plug and a female socket. The socket is mounted to and ran inside the box, and the plug is ran to the battery. Continue below:

    - The female side (Inside the box*) will be the side that you will need to measure diameter, drill out and then install into the box. I had 4 short self tapping screws available to me that I just used a drill to drill into the box after I drilled out the hole for the wire to go through and the mount to sit flat on the box. This negative line will join with your 4 into 1 negative solenoid line and both will tap into position one on the RF Chip. The positive line is the line that you will need to put the small jumper on from the PDF, after you crimp on the jumper, this line will go to position 2 and the jumper will jump to position 4.

    - The male side (ran from battery to box*), you will crimp into place your inline fuse on the positive (if you decide to run one, I recommend you do*), then you will crimp both the positive and negative lines to your battery lead lines (the lines that will literally attach to your battery*). The batter lead lines should be long enough to reach from the box to both the positive and negative terminals of your vehicle. You can make them different lengths if you would like as generally your box will sit on the passenger side of the vehicle, and the positive terminal is on the driver side, thus you can make the positive a little bit longer to reach the driver side. Versus a shorter negative line with the box and the negative terminal both on the passenger side.



    2. I forgot to mention that the RF remote chip's "box/case" will probably need to be trimmed to accommodate all the wires. I just used some wire snips to do this, it does not need to be perfect or precise, just trimmed enough to allow all the lines to plug into their position with the cover on. Also, I forgot to explain, but the reason I "fold" the U shaped connectors in half is to create a small little prongs which can easily go into the RF Chip's terminals and fasten down tightly. If you follow my directions you will better understand the idea for this when you see and do this process in person.

    REV - 10/3/2022

    Couple small revisions/additions.

    1. A MAJOR NOTE I FORGOT TO ADD WHICH APPLIES TO COMPLETE INSTALL - When using PTC (push-to-connect*) fittings, it is very important you do your best to cut ALL air tubing as square as possible. If you are careless and cut the tubing diagonal or at crazy angles this can possibly lead to leaks as the tubing will not be able to "seat" correctly in the fitting to create an air-tight seal. They do not have to be perfect, but as close to square as possible is your best bet. If you experience any leaks, you can use soapy water as usual to identify and solve.

    2. I realized on my PDF that step #2's last sentence got cutoff by the picture. It should read - "Once all the solenoids are mounted in box and you confirm everything fits well and can all be snugged up, uninstall them as you will need them loose until later steps."

    3. Step 3 - I should add that if your bulk heads are not "perfectly" matched up with your solenoids in either height or spacing placement, DON'T WORRY, the box will still work and function just fine. 4mm air tubing is extremely small and flexible so it can bend and flex to fit your setup. Just be sure to cut all your air tubing as square as possible as mentioned above. Gentle/soft bends are ok, but keep in mind that when installing any airlines, do your best to avoid any obvious obstructions or hard bends or kinks in the lines as these can hinder air flow as well.
    Last edited by aaronsananikone; 10-03-2022 at 11:40 PM.

  2. #2
    Veteran Member Four Rings Audisthesia's Avatar
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    Tampa

    Mad props for the knowledge share!
    18 S6

  3. #3
    Junior Member Two Rings
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    London, Ontario Canada

    Ha Ha, I built my own version a few weeks back with just a momentary on switch in line of my power cable. Hide most of it in behind the cigarette lighter cubby. Button is inside my front sliding center drawer. One issue I have yet to fix is I cant get all my valves to open at once unless I supply 13.6V which is when the car is still on. I have tried heavy gauge wire direct to the battery and still no solution.

    Great write up btw. Short of a little capaciter in line im not sure why my valves wont open. My battery reads at 12.5-12.6 when tested.

    Any ideas?

  4. #4
    Senior Member Two Rings
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    Quote Originally Posted by Audisthesia View Post
    Mad props for the knowledge share!
    No worries, I figure I'd help the DIY community. This mod isn't for everyone, but I figure if I can save those out there who are interested some bucks then why not.

    Quote Originally Posted by aber_18 View Post
    Ha Ha, I built my own version a few weeks back with just a momentary on switch in line of my power cable. Hide most of it in behind the cigarette lighter cubby. Button is inside my front sliding center drawer. One issue I have yet to fix is I cant get all my valves to open at once unless I supply 13.6V which is when the car is still on. I have tried heavy gauge wire direct to the battery and still no solution.

    Great write up btw. Short of a little capaciter in line im not sure why my valves wont open. My battery reads at 12.5-12.6 when tested.

    Any ideas?
    Right on brother! I actually have this same issue where my valves don't all open at once. Unfortunately I don't have a "hard" fix for this, rather I have a work around. My work around is just that sine the RF receiver comes with two switches, I used one as a press to vent, and the other I have programmed as a latch for 20 seconds. The press and vent remote rarely ever gets used, but the 20 second latch gets used all the time. I've found that the 20 second latch is just the perfect amount of time to vent all the bags to their max lowest. I run a 4 into 1 exhaust 1/2in air line out behind my bumper and down to the bottom of the ground just behind my diffuser so that I can hear the car vent, and it still vents in stages, but it vents all the bags completely.

    Another possible solution that may be a "hard" fix for this is tapping the same fuse that TGK recommends tapping. That fuse/circuit must be able to supply the proper amount of voltage to get them all open at once. But I cannot confirm this for sure as I have not tried it. I tapped my battery direct so that I can manually vent the car wherever and whenever I want without the car having to be on.
    Last edited by aaronsananikone; 10-01-2022 at 12:41 PM.

  5. #5
    Junior Member Two Rings
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    I tried tapping the wire TGK recommended but I found it did not have contanst power. I have ran a heavy gauge wire straight from the battery and it will not open all my solenoids. I have to buy a little Amp.

    If you want to do what dirtybird did he used a Bluetooth module and a pressure switch which prevented his tank from completely emptying making lifts slightly quicker. See links below.

    ZTUOAUMA Adjustable Oil Pressure Switch Sensor Set at 2 PSI 1.5 N/O 76051 Compatible with Hobbs Honeywell T79247 https://www.amazon.com/dp/B08NJ9SZ51...EBBR7V34NFA102

    DSD TECH 2 Channel Bluetooth 4.0 BLE Relay Module for iPhone and Android(12V) https://www.amazon.com/dp/B07MKMFP6H...PJSFNC66ZTG4DF

  6. #6
    Senior Member Two Rings
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    Quote Originally Posted by aber_18 View Post
    I tried tapping the wire TGK recommended but I found it did not have contanst power. I have ran a heavy gauge wire straight from the battery and it will not open all my solenoids. I have to buy a little Amp.

    If you want to do what dirtybird did he used a Bluetooth module and a pressure switch which prevented his tank from completely emptying making lifts slightly quicker. See links below.

    ZTUOAUMA Adjustable Oil Pressure Switch Sensor Set at 2 PSI 1.5 N/O 76051 Compatible with Hobbs Honeywell T79247 https://www.amazon.com/dp/B08NJ9SZ51...EBBR7V34NFA102

    DSD TECH 2 Channel Bluetooth 4.0 BLE Relay Module for iPhone and Android(12V) https://www.amazon.com/dp/B07MKMFP6H...PJSFNC66ZTG4DF
    That's strange, mine don't all open at the same time, but they do open and fully vent the suspension on all 4 corners with the remote set to a 20 second latch. I now have an upgraded tank, which helps with lift times as well. As for the amp/pressure switch and BT connectivity, keep us posted here what solution you do end up going with, I'd be interested to see how you resolve your issue! I will try and take a video of my box in action and post here as well for ppl to reference.

  7. #7
    Established Member Two Rings tuscani66's Avatar
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    Pittsburgh-PA/Acworth-GA

    Thank you very much!
    2016 S7 Prestige in Mythos Black over Arras Interior.
    Other Garage Items : Volvo S60 R / Lexus RC F / Saleen S281-Cobra Conv / Porsche Cayenne Turbo S / Toyota Tundra

  8. #8
    Veteran Member Four Rings Audibellybutton's Avatar
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    You are a good man. Thank you for your service I will air out in your honor
    C7 Audi A7 Prestige 3.0t (RIP) - Dual Pulley E40 , Turtle TCU , Ported Blower, Meth, Porsche 997 TB, Merc Racing Heat Exchanger, CWA-100, RKX Silicone Intake hose, RS7 Airbox, RS7 LPFP, JHM 207 pulley,SRM Driveshaft Upgrade, H&R Springs, 034 Drivetrain inserts, Vossen VFS2, RS7 Steering Wheel, Autotech HPFP

    C7 Audi S6 Prestige 4.0t (Current) - ZF8 Swap, E85 tune W/ FE STG2 Turbos, WMI, Merc Racing HX, EMP Coolant Pump,GFB DV+,LPFP upgrade, ECS Inlets, TS Gates, Exhaust
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  9. #9
    Senior Member Two Rings
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    Quote Originally Posted by tuscani66 View Post
    Thank you very much!
    Quote Originally Posted by Audibellybutton View Post
    You are a good man. Thank you for your service I will air out in your honor
    May the Mod Gods bless you both and your soon to be slammed rides ... Let us know here if you guys have or experience any challenges or have any input to add so that others can benefit in the future as well. And of course last but not least, pics of course of your box and rides once completed!

  10. #10
    Junior Member Two Rings
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    So I finally found time to play some more and I added a 12V step up converter. Running it at 15V triggers all 4 solenoids at the same time. Next steps will be to box it all up, run my wires everywhere and tuck it away behind the rear right cubby and I'll be done.

  11. #11
    Senior Member Two Rings
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    Quote Originally Posted by aber_18 View Post
    So I finally found time to play some more and I added a 12V step up converter. Running it at 15V triggers all 4 solenoids at the same time. Next steps will be to box it all up, run my wires everywhere and tuck it away behind the rear right cubby and I'll be done.
    That's great to hear! I've actually redone my box and took the time to figure out how to run a 4 to 1 setup. It's actually quite easy and just utilizes check valves in order to effectively "isolate" each corner. This system uses one single solenoid vs the 4 individual setup. I will post another write up of version 2 once I get a little time to put together another DIY doc.

  12. #12
    Junior Member Two Rings
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    What kind of check valve? What activates the check valve? Are they smaller?

  13. #13
    Junior Member Two Rings
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    I have the TGK dumpbox with the upgraded air tank and I love it!
    C7.5 S6 Prestige Moonlight Blue Metallic
    TAG built KyleTunedIt DS1 Stage 3

  14. #14
    Senior Member Three Rings mrdouble99's Avatar
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    Why not using this and only one selenoid ?

    https://www.amazon.ca/Uxcell-a111202...26730341&psc=1

    --------------------------------------------------------------------------------------
    Mythos Black Metallic 2018 Audi S6 current

    Moonlight blue 2015 Audi S6 sold

  15. #15
    Junior Member Two Rings
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    You have to control each line individually. Each corner has its own level control. I think the TGK box is awesome. I just wanted something to do and build one. Stimulate my limited creativity.

  16. #16
    Senior Member Two Rings
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    Quote Originally Posted by aber_18 View Post
    What kind of check valve? What activates the check valve? Are they smaller?
    Here is the check valve. As mentioned, these essentially "isolate" each line as it allows air only one direction to exhaust/so the box can vent... but on air up, these valves close. Otherwise on air up the car will only air the rears or the fronts up... These will allow you to run a single solenoid setup

    https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

    Quote Originally Posted by pnky_s6 View Post
    I have the TGK dumpbox with the upgraded air tank and I love it!
    That's awesome! I've been following you on IG for a little while now, the build is coming together quite nicely! TBH I got the idea from TGK, but I've always been the tinkering/DIY type so I thought I'd take this on by myself. Probably built my box and did the same tank upgrade both for less than the cost of buying the TGK box by itself. I also added an airline jack/port and manual pressure gauge in my trunk from the tank...looks sweet when I put in my custom wood floor all together! you can see them on the very left side below (dont mind the blue airlines, they were temporary and are now black heavy duty lines. I also cleaned up the OEM airlines and OEM valve block so it's not as janky/messy looking, I'll try to snap a pic later this evening:



    Quote Originally Posted by mrdouble99 View Post
    Why not using this and only one selenoid ?

    https://www.amazon.ca/Uxcell-a111202...26730341&psc=1

    You can definitely use one of these... But if you do not have check valves in place the air lines will not isolate from one another and you will end up only airing up your rears or front. I learned this the hard way when I was very early experimenting with a single solenoid option...My version 2 box uses this along with check valves to correct that issue so I now run a single solenoid without any problems, you can see my V2 box in the pics below. I will eventually do a write up as well like my original one and TBH I think this box is even cheaper to build then the first version as well... Win win for everyone in the future...

    Quote Originally Posted by aber_18 View Post
    You have to control each line individually. Each corner has its own level control. I think the TGK box is awesome. I just wanted something to do and build one. Stimulate my limited creativity.
    Absolutely agreed! As mentioned the TGK products are awesome, but I love to tinker/give myself little projects so that's where all this started... Check out my single solenoid Box V2 pics below:

    Outside of Box


    Exhaust vent/Power input side (I run a 1/2in exhaust airline from this port out my bumper and pointed down at the ground in order to give the car an audible "hissss" when airing out - not necessary but its extra street cred points jk, I like/prefer the sound as it acts as an audible confirmation that the car is airing out without this as you know the air out process is rather quiet)


    Air input side with check valves marked in RED
    Last edited by aaronsananikone; 02-22-2023 at 01:37 PM.

  17. #17
    Junior Member Two Rings
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    Quote Originally Posted by aaronsananikone View Post

    That's awesome! I've been following you on IG for a little while now, the build is coming together quite nicely! TBH I got the idea from TGK, but I've always been the tinkering/DIY type so I thought I'd take this on by myself. Probably built my box and did the same tank upgrade both for less than the cost of buying the TGK box by itself. I also added an airline jack/port and manual pressure gauge in my trunk from the tank...looks sweet when I put in my custom wood floor all together! you can see them on the very left side below (dont mind the blue airlines, they were temporary and are now black heavy duty lines. I also cleaned up the OEM airlines and OEM valve block so it's not as janky/messy looking, I'll try to snap a pic later this evening:

    Awesome, thanks dude! I'm not in the least bit mechanically inclined so I'd rather buy it complete lol. It was a fairly easy install for both DB and air tank and surprised myself by doing it
    C7.5 S6 Prestige Moonlight Blue Metallic
    TAG built KyleTunedIt DS1 Stage 3

  18. #18
    Established Member Two Rings
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    Are there any updates to this? I built the V1 and 60% of the time it works every time but this seems simpler.
    2014 S6
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    RS7 inlets
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  19. #19
    Senior Member Two Rings
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    Quote Originally Posted by RS5ish View Post
    Are there any updates to this? I built the V1 and 60% of the time it works every time but this seems simpler.
    Actually, yes there is! I found a way to run a single solenoid very easily, you can see it above in my response to another user... Will try to write an update for the DIY of version 2 soon, I've built a couple for a few guys here on the forum as well as myself, all functioning flawless as well... Just been busy with life and 2 toddlers destroying EVERYTHING in sight...

  20. #20
    Junior Member Two Rings Dmauricio1's Avatar
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    Quote Originally Posted by pnky_s6 View Post
    Awesome, thanks dude! I'm not in the least bit mechanically inclined so I'd rather buy it complete lol. It was a fairly easy install for both DB and air tank and surprised myself by doing it
    Completely off topic, but how was the Tank Upgrade install? I've been looking to do this after I get the dumpbox sorted. but I havent seen a single DIY on the tank upgrade, is it straight forward?

  21. #21
    Senior Member Two Rings
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    Quote Originally Posted by Dmauricio1 View Post
    Completely off topic, but how was the Tank Upgrade install? I've been looking to do this after I get the dumpbox sorted. but I havent seen a single DIY on the tank upgrade, is it straight forward?
    It's very straight forward. The hardest part is "fabbing" up a tank mount. I went in first with an old amazon carboard box, trimmed it to rough shape, then stuck it in and pushed in down so the mount screws poked through it, Then I took a sharpie and refined the shape so i had it in the position I wanted and that I had clearances on all sides that allowed me to run lines or whatever I needed. Then I threw the tank in with mounts preinstalled so I could outline where I would mount the tank to the mount. Then with a thin 1/4in thick sheet of wood I had laying around the house, I put the carboard on the sheet traced it and marked my hole positions, and then I used a handheld jig saw to cut out my shape and a drill to drill the mount holes. After that spray paint black, mount the tank to the mount FIRST, then mount the mount and tank. Run all lines accordingly and you're set!

    Thats an easy break down, but yes straight forward if you have a little sense of ingenuity and tool/craftsmanship... Feel free to DM me on I.G @ Badland.specials and I can give you more/better info as well a lot easier and quicker than here!

  22. #22
    Senior Member Two Rings
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    Hey Everyone, I realized that when I ran out of space on my Google Drive and had to delete the DIY file and because of this, I've had some users messaging me on here and for more information... TBH I don't really have much time to come onto the forums anymore, so please don't message me here unless you are willing to wait months for a reply... If you'd like a more immediate response, you are welcome to message me directly via Instagram @Badland.Specials as I still am here to help as many of you guys as I can!

    Hope everyone who went down this path is still enjoying their creation/dumpbox!

  23. #23
    Established Member Two Rings 1BadTundra's Avatar
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    I'm putting the parts in my cart now.... Any revisions to this before I send it? Do those ball check valves all work well?

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