Has anyone only installed Novitec cats, or cats + X-pipe? In other words, kept the stock Ferrari back boxes? In my experience with a previously naturally aspirated car, just changing from standard to high flow performance cats makes a very big difference. I'm just looking to increase the volume some. Thoughts?
cats with the x pipe will do wonders. I've heard mixed on not doing the back boxes. I would expect an improvement with the back boxes, but may be worth just starting without.
got experience with Kline cats + x-pipe (I'd imagine Novitec is similar). X-pipe doesn't increase the volume; race cats (or no cats) do. IMO, there is no need to change the rear boxes, especially if the valve stays open.
I tend to agree. I think the cats are probably all you need on the 812. I have 250 Capristo cats, X pipe and a capristo exhaust and I think I would have been fine without the exhaust. Cats were the game changer
Personally….could not be a better fit for me. Just the right balance between opening up the engine note as to where it should be, versus overly obnoxious. No codes. No limp mode etc.
I have capristo 250 sport cats on my 22 812 GTS. Spoke to my Motorsport guys here in LA who also spoke to capristo. Response below from a question raised on this issue in another thread. Can’t remember which one because it’s been discussed endlessly and I can’t keep up. “Its integrated into the stock cat component as mentioned (whereas on F8 it is part of the muffler). We use a lower cell count in the replacement section. still has bungs for monitoring etc. have not had any issues with the 250cell on 812GTS. I have never heard of anyone damaging an engine from this. There are two types of GPF regeneration. The following are the two methods of GPF regeneration: Passive regeneration: During this process, the high exhaust temperatures generated under normal driving conditions are sufficient to burn off captured particulate matter. The engine control system monitors the condition of the filter and initiates regeneration if necessary. The collected particles are oxidized and converted to carbon dioxide (CO2) and water vapor. Active regeneration: Active regeneration involves the use of additional methods to increase exhaust gas temperature to facilitate the combustion of captured particles. This is usually done when the exhaust temperature under normal driving conditions is not high enough for passive regeneration. The engine control system can inject additional fuel into the exhaust system or adjust ignition timing to increase exhaust temperature. This process helps burn off trapped particles and cleans the filter. Gas Particulate filter regeneration is an important aspect of maintaining the performance and emissions control of vehicles equipped with this technology. It helps ensure that the filter is cleared of accumulated particulate matter and continues to effectively reduce harmful emissions. If the readings show its clogged it would run the engine richer to help raise temp and clear it out. its not going to show clogged as its a lower cell count.” hope this helps. All I can say is I’ve had 0 issue so far but I’m also willing to take the risk for the engine to sound the way it does now. I’m ok with it. Whatever happens happens. Brings me too much happiness to worry about what if. I’ve got 8k miles on it in less than a year.
Do you happen to have any videos? And…so you don’t need any code clearing device with these? The 250 seems to be a sweet spot for not triggering a co2 cel, but I’m not sure how it bypasses the gpf cel. I’ll have to dig more into it.
correct. No OBD device and no codes. I researched this extensively because I had a setup prior which threw codes non stop and put it into limp mode. 250 seems to be perfect balance as told to me by capristo and my guys. Will take video asap. Car is in service. Soon as I get it back.
That's very positive to hear, not having to deal with any kind of computer management. So, do the new cats have a GPF of sorts, or just the appropriate sensor mounts to let the computer do its thing?
If I’m understanding correctly, they use a replacemt GPF with lower cell count so you can hear the engine better and it’s less restrictive. Also avoiding a GOF delete and all the issues that come with ut. I pick it back up TMW evening PST. Will take video
I believe that the Novitec sport cats are 100 cell. Could just installing those with the OBD be enough to make it much louder? I like the stock sound, I just want more volume.
Yes, but you’ll need to clear the code with a plug-in or tune. The high pitch shriek is from the x pipe, but I don’t recommend an x pipe without the sport cats.
Been reading your comments on this! I just got a 812 SF and today I ordered a set of Novitec catless cats and the x-pipe. I of course dont have the GPF but I wonder if going catless is going to be an issue for the car. I wonder if I should go with the 200 cell. I also got the tectronic module or whatever novitec calls it.
I had fabspeeed sport cats 200 cel on my 812 GTS and it was an utter disaster. I do not recommend. Non stop codes. OBD did not work. Limp mode…
