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Complete 812 Exhaust install

Discussion in 'FF/Lusso/F12/812S' started by jjc, Nov 3, 2020.

  1. jjc

    jjc Rookie
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    Jun 14, 2020
    1
    Phoenix, AZ
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    John J Castrogiovanni
    Will anyone provide their experiences with installing a complete 812 exhaust from IPE, F1 or Power-Craft.
    Decats, Sport Cats, ECU tunes, Fabspeed, CEL, warning lights, drivability, sound.
    Are you happy with your install and the brand you decided to go with.
    What would you do different? Thanks in advance.
     
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  3. SeattleStew

    SeattleStew Formula Junior
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    Apr 10, 2020
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    Stew
    I can’t speak to a full exhaust on my personal 812, as I only did an x pipe. In my opinion at minimum you need an xpipe.

    I have heard full novitec systems with no cats and it is extremely loud. I would not recommend doing it unless you want as loud of a car you can possibly have. In which case, I hope your car is some bright color because all it’s going to do is get attention.
     
  4. Tony Baunach

    Tony Baunach Karting
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    Mar 20, 2007
    140
    All around the world
    Haha if anyone s looking for novitec cat deletes let me know... :) run few kms...


    Sent from my iPhone using FerrariChat
     
  5. ForeverCar

    ForeverCar Karting

    Jan 20, 2017
    221
    How did it sound?
     
  6. Il Co-Pilota

    Il Co-Pilota F1 Rookie
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    May 29, 2019
    4,036
    Copenhagen
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    A.B
    Before venturing into a cat delete, think long and hard about how you use the car. It will be LOUD! A full Novi is by far the best sounding to my ears. I also like the Capristo. They are a bit different, but about equally loud.

    You need to consider the area where you are and how often, and how you use it. If you drive the car often, decat will be for the very few. It is just not practical. Even at idle, it gets a good 12-13 db louder, and that's a lot. That is what you will perceive as more than twice as loud - and that is both closed and open. A full exhaust at cold start is so loud that you would have a hard time standing next to the car and talk. You would have to shout to be heard. All this is before you even touch the throttle. A straight piped 812 going past you at full boot, is deafening. It is fun in a car you only drive on special occassions etc. but for a regular weekend driver or more, you will get tired of it, and so will your neighbours, the local gentry, the fuzz and every dog on your block.

    Aside from proper anti-social levels of noise, there's the smell. Over time the cabin will start to get an odour from the exhaust. Decatted cars smell, that's just physics. It is not the sweet pleasant smell of leaded C16 burning in a race engine, it is the pungent smell normally associated with "old car". Just something to consider.

    A 100 cell cat will still be obnoxiously loud, but it gets rid of nearly all the smell. Personally I think the 200 cell cat is the ticket. Sounds ace, no smell and the car remains usable.

    As far as quality of exhaust goes. Capristo, Novi, Kline and Tubi all seem to be on the same high standard. I would however never buy an IPE. I've seen bot fitment issues and cracking in various models. Not the 812, but from what I can tell, the quality is just not there. On top of that, I think they sound really odd and artificial. No thanks.
    The Tubi is an odd one. Have oly heard one, and it was a bit like an OE exhaust turned up. A bit deeper and a bit less of a scream compared to the others. Not my first choice.

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  8. Caeruleus11

    Caeruleus11 F1 Veteran
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    Jun 11, 2013
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    I agree and I would like to point out that decibels are not a linear measurement of "volume" (its really sound pressure). Its a logarithmic measurement- so 12-13db is many many many times louder (I think its 2x every 3dB- its been while so don't quote me- but the point is it's not just a little louder it is massively louder).
     
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  9. Il Co-Pilota

    Il Co-Pilota F1 Rookie
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    May 29, 2019
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    Well kinda:)

    It takes twice the electromechanical energy to increase the acoustic energy 3 db. That is however not what the human ear experience as twice as loud. To double the amplitude i.e double the actual db SPL or acoustic energy, you need a 6 db increase. But hold on, we're not done yet:) Increasing the sound to a point the human ear psychoacoustically perceives as twice as loud takes around 10 db.
    But what is interesting is the energy in that increase. It is as you say, not liniear. Going from 50 db to 60 is not a big deal, but going from about 90 which is a stock 812 at cold start to 102, is a lot. Just imagine listening to a rock concert at 110 db and then doubling what you hear - that's a significan increase. My guess is that a decatted 812 is over 125 or maybe even over 130 db @ 1 m WOT. At wide open an increase of 10-15 db, possibly more, is huge. A 12 db increase means twice the acoustic energy in the air and 8 times the power.

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  10. Il Co-Pilota

    Il Co-Pilota F1 Rookie
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    Oh small error on the last bit. A 12 db increase does not take 8 times the power, that would be 16 times:)

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  11. KarlA69

    KarlA69 Formula Junior

    Oct 9, 2017
    629
    UK
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    Karl
    Hi, my local parts supplier is currently installing sports cats for 812 SFs fitted with GPF. It involves the removal of the stock cat and the GPF and replaced with a 100 or 200 cell sports cat. I presume the resulting sound is then identical to a pre-GPF car fitted with a sports cat. You also need the Novitec module which cancels the CEL (and I think in this case also tells the ECU not to run the GPF).

    Has anyone done the above or looked into it? I'm interested but somewhat nervous. It would obviously invalidate the factory warranty & I don't want engine reliability issues by removing the GPF (which involves regeneration cycles, additional back pressure etc...). Any thoughts?
     
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  13. KarlA69

    KarlA69 Formula Junior

    Oct 9, 2017
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    Just FYI further to above, I spoke to a few knowledgeable people in the UK and they mentioned it should be no issue to replace the GPF. The ECU detects the difference in back pressure and adjusts. I’ll order it and get it done in Jan... will report back

    Roof down, blasting along a country road, V12 without GPF..... boom!
     
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  14. BLKM3

    BLKM3 Formula Junior

    Jun 26, 2005
    396
    California
    Full Name:
    J
    I have full Novitec decat on mine. Best sounding road car I've ever heard. It's also deafening loud.
     
  15. pt95

    pt95 Rookie

    Sep 6, 2018
    5
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    D
    just ordered full novitec exhaust system with sport cats, will share video once complete.
     
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  16. Dane100

    Dane100 Rookie

    May 21, 2018
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    Sammy
     
  17. gilly6993

    gilly6993 Formula 3

    Aug 20, 2009
    2,123
    Longmeadow, MA
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    Eric
    200 cats for sure


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  18. SeattleStew

    SeattleStew Formula Junior
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    Apr 10, 2020
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    Stew
    Made a big difference in giving it more of that F1 sound. Isn’t necessarily louder, but has a much better tone
     

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