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Thread: Exhaust increase / cut to reduce EGTs?

  1. 9th June 2016, 09:10 PM #1
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    Discofever
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    Exhaust increase / cut to reduce EGTs?

    Anyone cut out the middle box and or run a straight through with EGR data? I've already cut my middle box out and am in the middle of installing an EGT gauge so cannot do a before and after.

    Did those with EGT gauge notice lower EGTs after cutting out the middle box / fitting a straight through?

    Cheers.
    2006 TDV6 Disco
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  2. 10th June 2016, 06:46 AM #2
    ROAMER_AUS
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    I did mine in a disco. removed middle and resonator boxes. Didn't notice any difference.
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  3. 10th June 2016, 11:21 AM #3
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    Quote Originally Posted by ROAMER_AUS View Post
    I did mine in a disco. removed middle and resonator boxes. Didn't notice any difference.
    So now its a straight thru system with no resistance ?
    MY08 TDV6 SE D3- permagrin ooh yeah
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  4. 10th June 2016, 11:37 AM #4
    ROAMER_AUS
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    Quote Originally Posted by loanrangie View Post
    So now its a straight thru system with no resistance ?
    Well, it was, I did put resonator back on, it was nice to hear turbo whirl, but it was just stupidly loud. Resonator is no, or very little resistance anyway, but reduces 80% noise from what I noticed.
    EGT depends on lot of factors from what I gathered. I'm not sure how much muffler removal helps (I'm sure someone will have knowledge to share), but as I said, I didn't notice any difference on mine. My pump is set up in a way that I have to be careful how much foot I plant on the go pedal otherwise EGT shoot over 700 quite quickly. So muffler or no, I have to watch it. If you want to bring EGT down and keep it down, more air or less fuel.
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  5. 10th June 2016, 04:28 PM #5
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    Yeah i wondered about the resonator as most that have tried a straight pipe complained that the drone drove them crazy.
    MY08 TDV6 SE D3- permagrin ooh yeah
    2004 Jayco Freedom tin tent
    1998 Triumph Daytona T595
    1974 VW Kombi bus
    1958 Holden FC special sedan
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  6. 10th June 2016, 04:42 PM #6
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    I put on a flow through cat & exhaust. Should have done it years ago. Noticeable difference. Holds gear (auto) longer, better economy and seems to run better.

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  7. 10th June 2016, 04:45 PM #7
    ROAMER_AUS
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    Quote Originally Posted by loanrangie View Post
    Yeah i wondered about the resonator as most that have tried a straight pipe complained that the drone drove them crazy.
    I wasn't bothered by the drone that much, I could hear it but it wasn't that loud inside the cabin. But it was just stupidly lout outside, during acceleration especially. It just makes you look like a di*khead. You are making all this noise but not accelerating at some amazing rate.
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