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    Thread: Review: 42 Draft Designs (42DD) 3" Turboback Exhaust [GLI - prototype]

    1. Senior Member bluefox280's Avatar
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      04-02-2007 08:03 PM #1
      "Finally! Something to give power down stream of the turbo..."

      For some, this has been a long waited post...
      I picked up 42DD's 3" turbo-back exhaust with a GLI-style 4" single tip from 045GLI (thanks!) back in early January.
      And with the cruddy weather Colorado recieved for 3 straight months was horrible, so I couldn't get the sucker on.
      That's up until just over the weekend.

      Evan@42DD [2kjettaguy] packaged and shipped it with 75% hardware (which we agreed on) and with new gaskets.
      The parts:
      * downpipe w/ flex pipe (with EGT bong, and two O2 sensor bungs)
      * straight center pipe with catalyst & resonator (with center wing hanger & post-cat O2 sensor)
      * over-axle pipe (with hanger)
      * Magnaflow muffler + 4" high polished exhaust tip (with hanger)
      I picked up nine 3/8"-11NC x 1.5" bolts for the bolting the adjustable system together.

      Removal of the original exhaust on my vehicle (with 41K miles) was too difficult, but more time consuming since I only tilted the driver side of the car.

      But getting in the new one... wow! A breeze!
      With the individual parts, it was a cake walk to bolt up the downpipe and snug that down (with a new gasket, I purchased) right away.
      Then transfer the center wing hanger from the existing OEM unit to their system...
      And then getting that up and in; bolted down to the floorpan and loosely connected to the DP for adjustment.
      Then installing the over-axle pipe; Evan instructed me that he accidentally placed the hanger extension in the "backwards" position...
      No problem, you can easily rotate the hanger frame 180deg around, no problems.
      And then get the muffler on (with GLI lip I've had sitting around since October!) and get that 'close' to final position.
      Snug up all the bolts starting from the DP and working your way to the muffler...
      And wha-la! Turboback installed!

      So, just how good is in terms of built quality?
      42DD did their homework and got it right the first time!
      There is a great clearance on the DP, and the entire system all the way back to the muffler tip.
      I didn't have to rebend, retweak, cut, modify, bust, remove, or destroy anything on the car or on the system to get it on correctly.
      And there's not a single rattle or clank when I drive the car.

      Evan, I just have only a slight suggestions + comments (if you produce a full line-up):
      * could you add another 1/16" or 3/32" to the radius where the adjustable slots are for bolt up? It's extremely tight to get a socket on and not lodged on.
      * maybe supply a turbo-to-DP gasket as apart of the system (if you produce a full-line)
      * great O2 sensor placements; no problems for install + clearance
      * good placement of the adjustable slots; everything was reachable.
      * downpipe bolt-up was awesome; didn't have an issue feeding the DP through the firewall + heatsheild.

      So how the sound?
      I'm sorry, but I DO NOT have any sound clips or videos to show.
      However, I'll be descriptive as possible.
      Upon first start-up, the idle out of the rear indicates you've got something install.
      At low revs and soft take-offs inside the cabin, there's not much to hear that you have a different exhaust.
      But, the moment you give 50% - 100% throttle, it's quite clear you've increased size and sound output.
      The tone is really refined and does not give any raspy or turbine whirl out of the tailpipe.
      At cruising speeds, you can't hear it over the wind with open windows...
      Expect when you're on the throttle, trying to pass someone on the highway or local business section of town.
      Cabin noise is extremely minimal and medium radio volume (from OEM Monsoon unit) drowns out most of the exhaust noise...
      There is a slight, but healthy buzz when the car is on the gas, but that's probably caused with the engine mounts I have installed.

      Hey, I've been 16 before; and I don't need a loud exhaust anymore..
      This system fits my wants almost 100%!

      Installation Time: 8 (1 = alot / 10 = alittle)
      * great matching of individual componets; some of the bolt=up locations are "tight" to get a tool in
      Learning Experience: 7 (1 = already knew / 10 = read-up and learned new things)
      * the removal of the old exhaust was more difficult since I wasn't on a rack; but learned that this install wasn't difficult at all
      Performance: 7 (1 = nada / 10 = tons)
      * once on, the car does quicken in reaching redline; but no dyno infomation at this time
      Bang-for-the-Buck: 9
      * if produced as a full-line up, it'll be one of the most cost-effective and easily adjustable turbobacks I've ever dealt with
      Overall Rating: 9
      * extremely good craftsmanship, good construction, good R&D, great customer service and communication, etc, etc

      No, I don't have pictures of the install; was too dirty and nasty to bring out the camera and take step-by-step photos
      However, I will have finished photos in 24 hours of this post.

      - Erik

      Pattern Draft Imaging.com - "...Where Engineering Discipline and Photography Merge as One..."

    2. Geriatric Member Bora_Azul's Avatar
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      04-02-2007 08:04 PM #2
      nice

    3. 04-02-2007 08:09 PM #3
      Awesome write up dude. Wonder if they are going to produce more of them. Hopefullly the quality doesnt go down if they do.

    4. 04-02-2007 08:13 PM #4
      great write up! on their site it says they will produce the turboback once again in winter 2007. cant wait

    5. Member formerly silveratljetta's Avatar
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      04-02-2007 08:44 PM #5
      Good write up so far. I look forward to lots of pictures and a sound clip eventually from you.

    6. Member AUDIPWRD's Avatar
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      04-02-2007 08:51 PM #6
      Great write up.
      2012 GTI

    7. Forum Sponsor 2kjettaguy's Avatar
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      04-02-2007 09:08 PM #7
      Erik - thanks for the write up!

      Quote, originally posted by bluefox280 »
      [Evan, I just have only a slight suggestions + comments (if you produce a full line-up):
      * could you add another 1/16" or 3/32" to the radius where the adjustable slots are for bolt up? It's extremely tight to get a socket on and not lodged on.
      * maybe supply a turbo-to-DP gasket as apart of the system (if you produce a full-line)
      * great O2 sensor placements; no problems for install + clearance
      * good placement of the adjustable slots; everything was reachable.
      * downpipe bolt-up was awesome; didn't have an issue feeding the DP through the firewall + heatsheild.

      * For the production systems I have changed to 5/16" hardware. This allows you to use 1/2" wrenches as opposed to 9/16". I also tightened up the relative width of the slots to force them to rotate and not be so sloppy. The slots are CNC machined, so they rotate easier with hardware installed than the laser cut slots. The laser kerf binds up the rotation.

      *I'm on the fence with the turbo-DP gasket. I don't recommend replacing this gasket unless your car is older than 150k miles or you've removed the downpipe before. The stock gasket is a double layer stainless gasket and holds up very well, given that your DP doesn't leak or you don't park your car in a lake.

      Other improvements over the prototype systems include modular cat/test pipe section, CNC machined flanges, 1-piece over-axle pipe, and I fixed that backwards hanger issue.

      The systems are now available. I am having some major website issues right now and I don't expect the systems to hit the website for a few weeks. I have about half of the tip fitments confirmed, so if you were to place an order for a system there may be a 1-2 week delay depending on what you get. If you are interested in a system please IM me directly and we will go from there. We're selling them already despite not even being on the website.

      Evan


    8. Member Malant's Avatar
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      04-02-2007 09:38 PM #8
      I want one

      Heard nothing but good about these systems!


    9. Senior Member bluefox280's Avatar
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      04-03-2007 12:20 AM #9
      Cheap-o photos of the system and final install.

      Yes, there will be a complete photoshoot later.

      - Erik

      Pattern Draft Imaging.com - "...Where Engineering Discipline and Photography Merge as One..."

    10. Member utjrod7's Avatar
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      04-03-2007 12:23 AM #10
      Quote, originally posted by bluefox280 »

      Yes, there will be a complete photoshoot later.

      - Erik

      God, I hope so. It is complete.


    11. 04-03-2007 12:23 AM #11
      mad props to 42DD, i'd jump on this if i had a 1.8t. awesome company

    12. Senior Member bluefox280's Avatar
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      04-03-2007 12:24 AM #12
      Quote, originally posted by 2kjettaguy »
      Erik - thanks for the write up!

      You're welcome; thanks for the patience.

      Quote, originally posted by 2kjettaguy »
      * For the production systems I have changed to 5/16" hardware. This allows you to use 1/2" wrenches as opposed to 9/16".

      Fantastic; I was doing the math and 3/8" hardware has alot of shear rating on even standard grade 5 bolts...
      5/16" hardware is not a problem; good to hear!

      Quote, originally posted by 2kjettaguy »
      *I'm on the fence with the turbo-DP gasket. I don't recommend replacing this gasket unless your car is older than 150k miles or you've removed the downpipe before. The stock gasket is a double layer stainless gasket and holds up very well, given that your DP doesn't leak or you don't park your car in a lake.

      Mine only had 42K miles...
      But, I'm the type of owner where if a gasket is removed, it's replaced.
      But I understand the logic and the replacement was just as good quality as the OEM unit.

      Quote, originally posted by 2kjettaguy »
      The systems are now available.

      Excellent to hear!

      - Erik

      Pattern Draft Imaging.com - "...Where Engineering Discipline and Photography Merge as One..."

    13. Member burtondk12's Avatar
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      04-03-2007 12:34 AM #13
      thanks for the write up
      CT / tristate suspension/ airride installs. pm me for details

    14. Member spkn^GRMN's Avatar
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      04-03-2007 12:37 AM #14
      -Wes

      2014

    15. Member TheMunky's Avatar
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      04-03-2007 12:56 AM #15
      Thanks for taking the time to write that up. Looking forward to more pics/vids
      quattrodriven > the definitive resource/registry for audi drivers + add your daily driver, project, OEM+ ride, etc and help it grow!

    16. Member formerly silveratljetta's Avatar
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      04-03-2007 02:14 PM #16
      That tip is sexy. Im just worried about 3 inch all the way back being too loud and raspy.

    17. 04-03-2007 02:15 PM #17
      ^^^
      ditto.

    18. 04-03-2007 02:32 PM #18
      sweet.. definitely down to buy this winter

    19. Senior Member bluefox280's Avatar
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      04-03-2007 07:47 PM #19
      Quote, originally posted by formerly silveratljetta »
      Im just worried about 3 inch all the way back being too loud and raspy.

      It's just a tad louder than a Magnaflow 2.5" unreonsated cat-back...
      And almost the same as GHL's 2.5" resonated trubo-back.

      The 3" is deeper; not louder. There's a more audible range you can hear with the larger diameter.

      - Erik

      Pattern Draft Imaging.com - "...Where Engineering Discipline and Photography Merge as One..."

    20. Member formerly silveratljetta's Avatar
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      04-03-2007 09:12 PM #20
      Quote, originally posted by bluefox280 »

      It's just a tad louder than a Magnaflow 2.5" unreonsated cat-back...
      And almost the same as GHL's 2.5" resonated trubo-back.

      The 3" is deeper; not louder. There's a more audible range you can hear with the larger diameter.

      - Erik


      I know you know someone in your town that can make sound clips?

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      04-03-2007 09:35 PM #21
      Holy crap i cant believe your just now finally installing this thing. Glad your happy with it

    22. Senior Member bluefox280's Avatar
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      04-03-2007 10:50 PM #22
      Quote, originally posted by formerly silveratljetta »
      I know you know someone in your town that can make sound clips?

      Working on it... I swear; but my April is jammed packed.
      I'll see what I can do.

      - Erik

      Pattern Draft Imaging.com - "...Where Engineering Discipline and Photography Merge as One..."

    23. Member vwgliin05's Avatar
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      04-09-2007 10:30 PM #23
      nice man i want one

    24. Member formerly silveratljetta's Avatar
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      04-09-2007 10:40 PM #24
      Quote, originally posted by bluefox280 »

      It's just a tad louder than a Magnaflow 2.5" unreonsated cat-back...
      And almost the same as GHL's 2.5" resonated trubo-back.

      The 3" is deeper; not louder. There's a more audible range you can hear with the larger diameter.

      - Erik


      deeper and louder are basically the same thing. Just a reiteration of the same concept
      And I also just noticed that you have the resonated version. Im not a fan of resonators. I feel like they take away from the true exhaust note. Its a personal problem


      Modified by formerly silveratljetta at 7:42 PM 4-9-2007

    25. Senior Member bluefox280's Avatar
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      04-09-2007 10:42 PM #25
      Quote, originally posted by formerly silveratljetta »
      deeper and louder are basically the same thing. Just a reiteration of the same concept

      Ok, fair.
      There is some bass to the exhaust tone...
      However it's only out of the tailpipe.
      There's no resonation or engine noise midsection of the vehicle.

      - Erik

      Pattern Draft Imaging.com - "...Where Engineering Discipline and Photography Merge as One..."

    26. Member Stanky Turbo's Avatar
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      09-06-2008 09:57 PM #26
      Online dating is in!

    27. 09-06-2008 09:58 PM #27
      commenting on a year old thread..lol come on

    28. Member Gio-GLI's Avatar
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      09-12-2008 01:02 AM #28
      im looking for a 42dd where can i get my buy one!!!!! do they have a website or anything like that?

    29. Member jettalvr41's Avatar
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      09-12-2008 01:56 AM #29
      Quote, originally posted by bluefox280 »

      Ok, fair.
      There is some bass to the exhaust tone...
      However it's only out of the tailpipe.
      There's no resonation or engine noise midsection of the vehicle.

      - Erik

      boo Erik's car is lame good review, im getting the tip as soon as i get my exhaust fixed.

      I love vr6's too much.
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    30. Member FlyBy's Avatar
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      09-12-2008 11:43 AM #30
      Quote, originally posted by Gio-GLI »
      im looking for a 42dd where can i get my buy one!!!!! do they have a website or anything like that?

      try http://www.42draftdesigns.com

      Parting out a MK4 Jetta sedan. Galactic Blue. PM me.

    31. 02-14-2009 02:40 PM #31
      great job looks really good

    32. 02-14-2009 02:51 PM #32
      I just came across these guys and there stuff is sweet. Any pics of a single tip on a GTI?
      Or any other reviews?

    33. Senior Member bluefox280's Avatar
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      02-14-2009 04:25 PM #33
      Quote, originally posted by moofs »
      Any pics of a single tip on a GTI?

      Like the 20th / 337? Check the 337 / GLI / 20th forum.

      Quote, originally posted by moofs »
      Or any other reviews?

      Tons in the archives!

      - Erik

      Pattern Draft Imaging.com - "...Where Engineering Discipline and Photography Merge as One..."

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      02-16-2009 12:25 PM #34
      holy old thread!

    35. Member pgk2004's Avatar
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      02-16-2009 02:16 PM #35
      Quote, originally posted by 2kjettaguy »
      holy old thread!

      got my over a year ago, still have that smile when i go WOT

      for 42DD

      Current ----> 2013 VW CC LUX ---- UNI Stage 1+ / DSG Stage 1
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