Options to improve 812 GTS sound? | FerrariChat

Options to improve 812 GTS sound?

Discussion in 'F12/812' started by x z8, Dec 6, 2024.

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  1. x z8

    x z8 Formula 3

    Nov 22, 2009
    1,200
    Florida
    Full Name:
    Jeffrey
    I like the engine sound of the 812 GTS. Yet- The particulate filter degrades the sound. I live in the USA where this filter is not mandated. I am now purchasing a 2021 GTS with a two year extended warranty from a Ferrari dealer.

    1. What’s the best way to improve the sound without voiding the warranty- and is the expense worth it?

    2. After warranty expires- What’s the best way to improve the sound eliminating the particulate filter and avoiding OBD issues (tune).

    3. If I do number one- can I use the hardware in number two?

    Thanks in advance. Jeff
     


  2. Hey Jeff. There are a few turnkey solutions out there to get you the sound you're after and handle any CELs. Above is an 812 we recently fitted with the Full Novitec system.​
     
    WhySock likes this.
  3. x z8

    x z8 Formula 3

    Nov 22, 2009
    1,200
    Florida
    Full Name:
    Jeffrey
    I’m interested in doing the following when my 2 year warranty expires-

    1. Sports metal catalyst for cars with OPF
    2. Bundled with Tectronic
    3. Switchtronic
    What can I do now based on doing that in the future?
     
  4. MaranelloAllTheWay

    Apr 30, 2023
    243
    Please do some basic research. There is NO solution to CEL due to emissions (P0420 and P0430 are the codes). What Novitec sells (and some other brands do the same),i.e the dongle you plug to your car that blinks by your foot is a hack that continuously clears the CEL before the car can run the emission tests (and subsequently fail the test that results in yellow CEL symbol to be lit).

    I dont mean to offend but there is a tremendous amount of lack of understanding as to how these things work. Those monitors that are in each car (i.e tests) are mandated by federal laws and no tuner, no shop, no person in their right mind will “cheat” them (cheat in a sense that they “pass” the test instead of failing by tweaking the passing criteria) because this is a federal felony with proper prison time.

    Thats fact 1.

    Fact 2 is GPF/OPF based cars have far too many electronics that are more sophisticated than standard catalytic converter cars. While in practice, US doesnt monitor the effectiveness of these filters, there is no way to disable them because their functionality is directly integrated with how the ECU controls the fueling of the car among other things. The back pressure with GPF cars is completely different. Removing those bricks will immediately throw the car into chaos. I dont care what some tuner shop says, I wouldnt do it without a proper ECU tune that properly calibrate all ECU tables.

    With the above, one can conclude that there is no way to get around a CEL in the way one would naively think. You may as well take a black plastic tape and tape over the CEL symbol on your dash because that Novitec dongle does exactly that.

    Lastly, if you plan to keep the car beyond the initial emission test coverage (each state is different) and that you will take your car to a state emission facility, your car will NOT pass the emission test.

    This is not a Ferrari thing. Its a car with a catalytic converter thing and applies to every car. With some cars you get lucky and the car by itself passes the emission tests using 200 CEL cats but some dont.
     
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  5. x z8

    x z8 Formula 3

    Nov 22, 2009
    1,200
    Florida
    Full Name:
    Jeffrey
    I am not offended by your post. In fact I appreciate your comments.

    I will look into this further.

    Note: There are no annual emissions test in the state of Florida.

    “No, Florida does not require regular vehicle emissions testing. The state discontinued its emissions testing program in 2000. However, vehicles must still meet certain safety and environmental standards at the time of sale or registration, but there is no annual or periodic emissions test requirement.

    If you’re moving to Florida or registering a car there, you’ll need to ensure it meets Florida’s general vehicle inspection and registration requirements, but emissions testing is not part of the process.” CHTGBT
     
    Caeruleus11 likes this.
  6. MaranelloAllTheWay

    Apr 30, 2023
    243
    Then you are probably fine. But even with no emission tests in Florida, I'd say you have to tune your 812 GTS if you are touching the particulate filters and catalytic converters. The change will absolutely impact back pressure causing the car to run too lean. N/A engine like the V12 with such high compression ratios may not like running that lean for that long.

    If it were me, I'd change the xpipe and the rear mufflers but leave the rest alone.
     
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  7. x z8

    x z8 Formula 3

    Nov 22, 2009
    1,200
    Florida
    Full Name:
    Jeffrey
    The more I read regarding the particulate filter on the 812 GTS, the more it appears there is no good solution- yet. Some owners of just the exhaust upgrade (Capristo/ Novitec?) report little improvement in the sound- probably because the stock muffler is very good. Removing the GP filter and going with 200 sport cats sounds great but eventually leads to CEL problems (reported cat degrades with time) and who knows if the ECU needs to be reprogramed with a proper tune. GRRR!

    Quoting another poster… “The key benefits to the sound will come if you replace the stock cats with sports cats. The Ferrari manifolds and back boxes are already pretty efficient from a flow perspective so there is little to be gained by changing the back boxes and I'm not aware of anyone making replacement manifolds for the V12 engines. Ditto the use of an X-pipe. There's limited benefit in X-piping a V12 compared to a V8.”
     
  8. Solid State

    Solid State F1 World Champ
    Owner Rossa Subscribed

    Feb 4, 2014
    10,575
    Full Name:
    Maximus Decimus Meridius
    And such is the problem with all new Ferraris. And this chaos is not even required in the US for gas cars. Such a pity. The GPF cars have no sound that is synonymous with the shrieking NA V12. Instead, a coffee can muffled sound with low decibels and and an alien low groaning sound.
     
  9. x z8

    x z8 Formula 3

    Nov 22, 2009
    1,200
    Florida
    Full Name:
    Jeffrey

    I’m still hopeful a solution will appear for the 812 GTS. It sounds great stock, I just know it can sound much better.
     
  10. Solid State

    Solid State F1 World Champ
    Owner Rossa Subscribed

    Feb 4, 2014
    10,575
    Full Name:
    Maximus Decimus Meridius
    Best solution is get an F12 or 812 without it and enjoy the beast.
     
  11. x z8

    x z8 Formula 3

    Nov 22, 2009
    1,200
    Florida
    Full Name:
    Jeffrey
    I have an F12. I want a GTS. Also handles much better.
     
  12. x z8

    x z8 Formula 3

    Nov 22, 2009
    1,200
    Florida
    Full Name:
    Jeffrey
    Peak Ferrari?

     
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  13. Caeruleus11

    Caeruleus11 F1 World Champ
    Rossa Subscribed

    Jun 11, 2013
    11,606
    It would be nice to find a way to remove the GPF, but what @MaranelloAllTheWay says above is exactly as I am told as well. If you want to do it, you will need an ECU tune. There are shops doing it, but now we’re playing with a very expensive car…..

    With all that said, I am surprised to be saying this, I think they did a good job with the sound of the 812 GTS. It’s actually more in keeping with the GT nature of the car. If you get up in the revs and really get on it, you will still get the high pitch sound. You’ll also be going very fast! Try driving the car with the top up and you will hear the engine sound, which has a very similar roar to the old school Ferraris. The nature of the sound is really that good. Top down, you hear the exhaust, and it’s a good sound. It’s not the TDF nor the SF, but it’s very good.

    FWIW, I think the 812 GTS is one of the best Ferraris they ever made.
     
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  14. Wheels1

    Wheels1 F1 Rookie

    Oct 23, 2007
    3,581
    UK
    Full Name:
    Grant
    First fit an remote exhaust Valve opener, this will not void warrantee and it does make a difference, when the car get warms it seems to burble more on lift off, and makes the exhaust generally louder at speeds where the valves would normally be closed.

    You can always leavethe remote at home when it comes to service time, if you fit a Capristo remote, the car behaves as normal when it is off so it would be hard for Ferrari to tell it has one. NO codes.

    When your warrantee expires it’s up to you.
     
    DZ-96 likes this.
  15. Faider

    Faider Formula Junior
    Rossa Subscribed

    Mar 30, 2024
    323
    LA/NY
    So I went through this exact issue. I have an 812 GTS and the sound was unbelievably muted. Almost made me sell an exceptional car that I was obsessed with because the sound was non existent on a car where the sound is the driver. Pun intended. I was persuaded to install fabspeed sport cats and an X Pipe versus novitec and use the OBD to clear check engine lights. Huge mistake. Within 24 hours(With the OBD) Cat warnings, check engine warnings and the car would go into limp mode repeatedly where you can't drive over 15 MPH. I spent the next month trying to fix the issues with fabspeed. Multiple OBDs. Tried 20 "solutions". Nothing worked. Went back to OEM and Fabspeed refunded my money 100%.

    I spent a few more months driving it OEM and was miserable. Began thinking about trading for the F12 which is the better looking car esthetically IMO but you lose the drop top element, and losing that in Los Angeles is a huge problem. Read every post on here regarding "812 sound" and "solutions" etc and even though everyone said changing the exhaust and adding an X pipe wouldn't effect volume, I took a shot and added a Capristo exhaust and X pipe. And what do you know? Everyone on here who said it wouldn't do much was 100% right. 0 change.

    I was reluctant to try cats again due to my previous experience but in a last ditch effort to save myself from selling, I put Capristo 250 Cel cats on. Capristo was adamant they never had an issue with this setup, but of course couldn't guarantee it. I was unbelievably skeptical and in fact, every single person I spoke with told me I'd need a tune or it wouldn't work. Had the cats installed last month and forgot to purchase the OBD so I took delivery without one installed. It's been a month and I have yet to have a single code or limp mode. Knock on wood, No cat light, CEL or any issue whatsoever and the car sounds like a _____ing symphony. I have pushed it extensively well over 100 MPH for extended periods at 5 AM on empty freeways and nothing thus far. Car is now a 10/10 in every way and driving it makes my day every day. No OBD ever installed....

    Not discounting what anyone is saying and everyone's experience is probably a bit different, but this one is mine.

    PS- Tag Motorsports was incredibly helpful on my journey and unbelievably knowledgable. Never bought anything from them and have yet to ever buy anything from them, but they still took a lot of time to help me and I will def be using them in the future.
     
  16. Faider

    Faider Formula Junior
    Rossa Subscribed

    Mar 30, 2024
    323
    LA/NY
    Funny but I found the car was quieter when I opened the valves with the remote versus when I left it alone and it opened and closed on its own
     
  17. x z8

    x z8 Formula 3

    Nov 22, 2009
    1,200
    Florida
    Full Name:
    Jeffrey
    What year is your GTS? Is your car still under warranty? Please keep us posted on your continued experience. Thanks- as I would love to do this!
     
  18. RBRS1955

    RBRS1955 Rookie

    Nov 2, 2024
    38
    Full Name:
    Russell Boxall

    So just the Capristo cats? That's a win especially for your pocket book.
     
  19. Faider

    Faider Formula Junior
    Rossa Subscribed

    Mar 30, 2024
    323
    LA/NY
    2021. Still under warranty and haven’t had any issues with my service dept and it’s one of the most renowned in the country.
     
  20. Faider

    Faider Formula Junior
    Rossa Subscribed

    Mar 30, 2024
    323
    LA/NY
    No. Full setup. Capristo exhaust/X pipe/250 Cel cats.

    Got an amazing deal on setup. Paid about 10k all in
     
  21. x z8

    x z8 Formula 3

    Nov 22, 2009
    1,200
    Florida
    Full Name:
    Jeffrey
    If you don’t have any warranty claims after the addition of the 250 cel sport cats you wouldn’t really know. Right?

    To be clear- I’m really excited about your post and grateful you shared your experience. I just purchased a 2021 with a two year warranty- the car will arrive next week. I would love to be able to do what you did if it works without problems. Not sure if I would wait until the warranty expires as this is a rather expensive car.
     
  22. x z8

    x z8 Formula 3

    Nov 22, 2009
    1,200
    Florida
    Full Name:
    Jeffrey
    Wow- Can I get this deal?
     
  23. Faider

    Faider Formula Junior
    Rossa Subscribed

    Mar 30, 2024
    323
    LA/NY
    my advice would be to build a relationship with your service department and just feel them out. Tell them you’re thinking about this and see if they will void your warranty based on these mods. They deal with this all day every day. This isn’t uncommon to do to these cars. My guys had 0 issue but I would bet based on what I’ve read here that every service dept is different.

    fired my 812 up again this morning and still no codes whatsoever….
     
    Thecadster likes this.
  24. x z8

    x z8 Formula 3

    Nov 22, 2009
    1,200
    Florida
    Full Name:
    Jeffrey
    TY. It’s not the service department that determines the validity of a warranty claim- it’s the factory. I have a 12 year relationship with my current service department. I don’t think that’s enough if I have a claim.
     
    mdrums likes this.
  25. Faider

    Faider Formula Junior
    Rossa Subscribed

    Mar 30, 2024
    323
    LA/NY
    Interesting. I’ve had work done with no issue.
     

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