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Additional info on GPF removal

Discussion in 'FF/Lusso/F12/812S' started by KarlA69, Dec 18, 2020.

  1. KarlA69

    KarlA69 Formula Junior

    Oct 9, 2017
    629
    UK
    Full Name:
    Karl
    Hi

    I went to Brooke Race Exhaust today (highly recommended!) to get my stock cats and GPF replaced with 200 cell sports cats on my GTS. See pic - the blue part is the standard cat, the red part is the GPF unit, so you can see they are easily removed together. The shiny silver ones are the new 200 cell sports cats. You also need a module to cancel the GPF warning lights (mine was from Novitec). All seems to work well.

    The sound is epic - back to the 'good old' 812 SF sound (with a bit more volume) including the scream at higher revs. Can't wait to throw down the roof in spring and drive it properly!

    Karl


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  3. Wheels1

    Wheels1 F1 Rookie
    Silver Subscribed

    Oct 23, 2007
    2,956
    UK
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    Grant
    You must have shares in the exhaust company Karl, the number of Ferrari exhausts you have changed :)
    I thought the GPF part would have much bigger.
    Did you fit an X pipe instead of the straight through pipes shown?
    I think we need a sound video in spring please?
     
  4. Nuri Bodur

    Nuri Bodur Rookie

    Jan 15, 2019
    5
    Full Name:
    Nuri Bodur
    Can’t wait to hear her Karl! Let’s hope for an opportunity soon


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  5. ForeverCar

    ForeverCar Karting

    Jan 20, 2017
    218
    Can we hear it please? :D
     
  6. Avia11

    Avia11 Formula Junior
    Silver Subscribed

    Jan 21, 2017
    714
    San Diego, CA
    Awesome, can you post a video of the EPIC sound?
     
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  8. REALZEUS

    REALZEUS F1 Veteran

    Feb 16, 2011
    5,993
    Bournemouth, UK
    What's the plan for the MOT inspection, if I may ask...?
     
  9. Caeruleus11

    Caeruleus11 F1 Veteran
    Rossa Subscribed

    Jun 11, 2013
    9,678
    Bravo Karl!
     
  10. ScrappyB

    ScrappyB Formula Junior

    Oct 3, 2017
    823
    Full Name:
    T
    Are any changes required to the engine mapping? I would have thought a tune is necessary to account for the reduced back pressure. I presume your Ferrari warranty is voided?
     
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  11. KarlA69

    KarlA69 Formula Junior

    Oct 9, 2017
    629
    UK
    Full Name:
    Karl
    Haha yes I have spent WAY too much money on exhaust parts in the last few years (for Portfolio, 812 SF and now GTS) but I'm done now.. the GTS is a keeper. To address the questions above:

    - Sure, it might affect the warranty. But so might changing the standard cats to sports cats on a pre-GPF car. Or, if you have a fussy dealer, even changing the rear mufflers technically affects the warranty. I made my modification that in mind. If/when I have a warranty claim I might have an argument on my hands with the dealer/Ferrari factory. So be it.
    - regarding MoT (in the UK), I have spoken to a few garages and their feedback is that if the car passes emissions standards (which it will, because I didn't remove the cats) they are pretty relaxed. As an aside, a few months back I took my 812 SF for a 'test' MOT with 100 cell sports cats fitted, thinking it would fail the emissions test. Surprisingly, it passed.
    - yes I fitted an X pipe to replace the stock mid-section. In my experience, an X pipe is only worth adding if you are doing the cats as well. If you have stock cats, the x pipe makes little difference other than making it quieter and 'thinning out' the sound. You need the extra flow/volume of the sports cats to make the package work.
    - no ECU changes required. The Novitec module cancels the GPF warning light and regeneration cycle. In terms of reduced back pressure, the ECU automatically notices this and adjusts (as would be the case for adding sports cats in a pre-GPF car)

    I think Ferrari did a decent job with the GTS's sound, given the limitation of GPF. But to me, the (pre-GPF) 812 SF still sounds better. Specifically, I find the GTS to be quiet at idle and low revs, plus it looses some of that high pitched scream after about c. 5k revs. My modification addresses both. The GTS sounds decent and is probably loud enough for most, especially with the roof down. But to quote Scarface: nothing exceeds like excess! :)

    Will post a video shortly! But if you've ever heard an F12 or 812 SF with sports cats, it sounds just like that!
     
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  13. italiafan

    italiafan F1 World Champ

    Jul 19, 2006
    10,540
    USA
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    Stickbones Swagglesmith
    Who makes the exhaust parts?
    How to order?

    Thanks, brilliant!
     
  14. KarlA69

    KarlA69 Formula Junior

    Oct 9, 2017
    629
    UK
    Full Name:
    Karl
    The rear boxes and mid section (x pipe) from the 812 SF will fit just fine, so you can buy existing versions (or move them over from your SF, which is what I did)

    The sports cats and OBD port module are specific to the GTS. As far as I know, the only people currently making the module are Novitec.

    For sports cats, Brooke Race Exhaust, Novitec or Kline all do them already. No doubt other companies will, over time, too.

    I don’t know about ordering; depends where you live. But hopefully the above helps you to find it.
     
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  15. KarlA69

    KarlA69 Formula Junior

    Oct 9, 2017
    629
    UK
    Full Name:
    Karl
    Hi, as requested please see attached video of my GTS with 200 cell sports cats. Videos never do it justice... it is epic in person!

    Shout out to Eddy at Brooke Race Exhaust in the UK for a quality product and install!
     

    Attached Files:

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  16. Ngcanada

    Ngcanada Karting

    May 16, 2016
    193
    Ottawa Canada
    OMG that sounds incredible
     
  17. KarlA69

    KarlA69 Formula Junior

    Oct 9, 2017
    629
    UK
    Full Name:
    Karl
    Thanks, trust me in person it's even better! The cold start is WAY too loud but thankfully I now have it in underground garage so no neighbours to annoy. With the roof down at 6k and above revs it is truly amazing. I'd recommend the mod to anyone but understand it might be a bit much for some. For me, I'm just glad we found a way out of the GPF mess (for those that want to)
     

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