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    Thread: Mating a 42DD downpipe to a milltek cat back

    1. 09-28-2012 09:18 AM #1
      Has anyone done this before? I really don't want to spend $900 in the milltek downpipe but want a quiet free flowing exhaust. Will a regular muffler shop be able to do this with only minor work? I don't want to hack either part up...


    2. 09-28-2012 11:10 AM #2
      What kind of flange does the cat-back have, if any? Or is it just a raw cut?

      Cheapest option would be to use a sleeve clamp and cut off the flange(s), but definitely not the best.

      Going all out, you would need to either add or replace whatever is on the cat-back side to a flange that matches the DP. Should not cost more than $50 to buy the flange and have someone weld it on for you, provided you bring the piece off the car alright marked for placement.
      Last edited by STOICH; 09-28-2012 at 01:01 PM.

    3. 09-28-2012 12:13 PM #3
      I'm not sure about the flanges as I haven't purchased or seen them yet. There is a $500 cost difference between the 42dd and the Milltek. I'm just trying to save some money and I think the 42dd is a good product. I would buy their whole system but I think it would be too loud for my taste.

      Is it safe to assume that both down pipes are going to end in the same location? If so I don't see it costing more than $50-$100 to get them together. But I could be wrong...what do u think?

    4. 09-28-2012 01:02 PM #4
      Sorry - I meant it should not cost more than $50.

      Why not just get an ebay downpipe? Cheap and works.

    5. 09-28-2012 04:27 PM #5
      Idk maybe I will. I just didn't trust it. I'll research it more I guess... Thanks for the input.

    6. Member Vwnitrous16v's Avatar
      Join Date
      Apr 20th, 2003
      Manchester CT
      85 Vrt coupe, 85 GLi, 88 16vt GLi, 91 raddo vr, 04.5 bmp GLi
      10-01-2012 10:29 PM #6
      my dp broke, and i replaced it with an ebay one. im happy with it, i cut it up to put a 3in cat into it also off ebay for dirt cheep, no cel and free flowing for less then 200$

    7. 10-02-2012 08:11 PM #7
      I have a 3in 42DD DP to a Milltek 2.5in resonated catback......42DD provided me with all necessary hardware to bolt to the Milltek.

      it is not loud at will LOVE the sound!!

    8. Former Advertiser
      Join Date
      Oct 7th, 2011
      Fairport, NY
      10-03-2012 10:11 AM #8
      Roc-Euro has all the equipment in house to make custom stainless and clamp-able adaptors. They're in my neck of the woods and I utilize them alll the time for that sort of thing.

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