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Thread: DPI SPEC 1 Exhaust Audio?

  1. #1
    Senior Member hippieman9's Avatar
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    My VIN:    06668 81' Grey interior, 5 speed, Grooved hood. Previous owner of 16301, in 2001. Found Nov 2019, a

    DPI SPEC 1 Exhaust Audio?

    I have been trying to find a good video/audio of DPI's Spec 1 exhaust. There are a few videos on you tube but the sound quality isn't there. I have heard great things about this exhaust but I would really like to hear it in person. Is there anyone in North Carolina that has one installed that would let me hear it? Also how much louder is it inside the car while driving vs. stock? Thanks!

  2. #2
    Certified Stainless!! Chris Burns's Avatar
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    VIN 6813 running with DPI Spec 1 cat delete exhaust.

    Video running inside garage.

    https://m.youtube.com/watch?v=gAicVDyazqs



    Video running as car is pulling out.

    https://m.youtube.com/watch?v=iybJx2Ln7ec

    If you go this route make sure to get your exhaust and headers ceramic coated!!

    You will not regret it!!

  3. #3
    Senior Member hippieman9's Avatar
    Join Date:  Jan 2018

    Location:  Mebane, NC

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    My VIN:    06668 81' Grey interior, 5 speed, Grooved hood. Previous owner of 16301, in 2001. Found Nov 2019, a

    Quote Originally Posted by Chris Burns View Post
    Video running inside garage.

    https://m.youtube.com/watch?v=gAicVDyazqs



    Video running as car is pulling out.

    https://m.youtube.com/watch?v=iybJx2Ln7ec

    If you go this route make sure to get your exhaust and headers ceramic coated!!

    You will not regret it!!
    If the exhaust is all stainless what would be the point in having it ceramic coated?

  4. #4
    Senior Member kbrown84's Avatar
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    Quote Originally Posted by hippieman9 View Post
    If the exhaust is all stainless what would be the point in having it ceramic coated?
    The stainless will turn brown over time, and it is visible from the rear so some folks will coat them for looks...it’s supposed to also reduce temps in the engine compartment, not sure if it really does though.

    Here’s a clip of my Stage 2 with a DPI exhaust...
    https://youtu.be/x8GtlUuCZTI




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    Kolin Brown
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  5. #5
    Certified Stainless!! Chris Burns's Avatar
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    Here are 2 pics of aftermarket Delorean exhausts.

    Ceramic Coated vs Non Ceramic coated.

    Ceramic coating keeps the heat down and helps the exhaust last longer.

    The 2.8 V6 puts out a good bit of heat and over time it can make any exhaust rusty.
    Attached Images
    Last edited by Chris Burns; 05-17-2018 at 11:23 AM.

  6. #6
    Senior Member hippieman9's Avatar
    Join Date:  Jan 2018

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    My VIN:    06668 81' Grey interior, 5 speed, Grooved hood. Previous owner of 16301, in 2001. Found Nov 2019, a

    Quote Originally Posted by Chris Burns View Post
    Here are 2 pics of aftermarket Delorean exhausts.

    Non Ceramic Coated vs Ceramic coated.

    Ceramic coating keeps the heat down and helps the exhaust last longer.

    The 2.8 V6 puts out a good bit of heat and over time it can make any exhaust rusty.
    Good thing Jet Hot is in the town I live.

  7. #7
    Senior Member
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    Quote Originally Posted by Chris Burns View Post
    Here are 2 pics of aftermarket Delorean exhausts.

    Ceramic Coated vs Non Ceramic coated.

    Ceramic coating keeps the heat down and helps the exhaust last longer.

    The 2.8 V6 puts out a good bit of heat and over time it can make any exhaust rusty.
    That second pic looks like a stage 1 exhaust, which also came in steel.

    I actually have the bare spec 1 exhaust on my car, and only the headers darkened a bit. And even with those darkened, they still look absolutely great.
    Early 81 5spd conversion- DMCH Ground Effects, Double Din, Custom Instrument Cluster, QA1 Suspension, 3.0 PRV with MS3

  8. #8
    Formally hmm252000
    Join Date:  May 2011

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    Yes, that pic is of a first gen Stage 1 from DMCH that rusted like that (wasn't made of SS). I have a DPI Spec 1 for about 8 years now that's not coated. Obviously doesn't look as nice, but there's no rust. Just a champagne color to it.

  9. #9
    Nit-picking customer(as seen on TV) Iznodmad's Avatar
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    Location:  Lexington, NC

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    Yes, there is an owner near me with it, may be able to arrange a meeting for you to see it in person. I had two of the SPEC 1 systems and drove both many thousands of miles. My personal favorite by far, you won’t go wrong purchasing and installing it.

  10. #10
    Senior Member hippieman9's Avatar
    Join Date:  Jan 2018

    Location:  Mebane, NC

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    My VIN:    06668 81' Grey interior, 5 speed, Grooved hood. Previous owner of 16301, in 2001. Found Nov 2019, a

    That would be wonderful I’m only about an hour away. I would love to hear it In person if they are willing.

    Quote Originally Posted by Iznodmad View Post
    Yes, there is an owner near me with it, may be able to arrange a meeting for you to see it in person. I had two of the SPEC 1 systems and drove both many thousands of miles. My personal favorite by far, you won’t go wrong purchasing and installing it.

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