Best options for 812 exhaust (rear boxes)?

I have a single data point to add to your consideration: Klein
I heard an 812 with the quietest version of a Klein exhaust and the sound alone was enough to make me consider making the same spontaneous decision you just made.

Others with more wisdom will doubtless chime in.
if possible, try to get some before/after videos for sound comparison (with the usual caveats about video quality etc)

Congrats on your purchase!

 

Having just purchased an 812, this is something I am interested in as well. I searched for previous threads on this subject but couldn't find any. I hope some fellow 812 owners chime in.

 

I went with Capristo exhaust for my 812. I really like it as it improves upon the beautiful stock sound of the 812 and doesn’t “change” the sound dramatically it heightens it.

 

Capristo is nice and of superb quality. Novi is on the same level, but more pricey. What you like in terms of sound, is subjective. I think the Capristo X pipe is a nice addition no matter which back box one chooses. It does not really do much for loudness, but it changes the sound signature to a less factory style sound. I don't care much for IPE. Have seen both cracked tubes and fitment issues. No thanks.

Tubi usually do things well, but I have not heard their 812 stuff, and I have no experience with Kline. Again, consider the Capristo X pipe with these as well.

 

I have a F12 and through my research a lot of people said that the mufflers are pretty free flowing from the factory and you won't get too much sound benefit by paying thousands for aftermarket mufflers. I presume this could applicable to the 812.

So I ended up going with Kline 200 cell sport cats ( No check engine light or tune required) and Capristo X-pipe with valve controller.

I couldn't be happier. The car sounds amazing and it's not intrusive in the cabin. No drone either. However when you hammer it, you hear all the magnificence of the V12 symphony. When cruising, you have a sweet purr. I have never even had to close my valves due to excessive noise.

Later on I did a tune from Vivid Racing and I had them add some pops and burbles for the decels.... I'm so in love.

 

Doing the cats is by far the best exhaust option for sound and power gain. The rear boxes don't add any power and maybe a slight sound change.

If you do 100 cell, you will likely require a tune, 200 cell you might need bung extensions to keep the CEL off, which is minor. The 200 cell cats is the best thing you can do for sound and power. I couldn't be happier.

If you'd like, go on my instagram (Pazzo009) and there are clips from a few weeks ago of sound.

Good luck.

 

Yes it is based on the F12.

The 812 has a .2 larger displacement so I suppose that could make a difference in sound, but I can't see it being much. Aside from that, the recipe should be the same. Cats restrict air flow and sound, and that's your best benefit. The mufflers, were free flowing on the F12, so I can't see Ferrari changing that on the 812.

The X-pipe essentially made no difference on my F12. I only heard a slight change in tone at higher RPMs.

So in summary, the mufflers will offer no power gain. If the manufacturer claims that, I'd be skeptical. The cats definitely offer sound and power...but not obnoxious. It's just right IMO

 

What makes a difference between the F12 sound and 812 sound has little to do with displacement. You would never be able to tell the difference by that alone. However, the slightly higher compression makes a difference, and so does the more aggressive cam profile. But I think the main difference is due to different intakes. As I have touched upon elsewhere a few days ago, a lot of this sound is intake sound. This might sound odd in terms of how the exhaust sound, but the intake sound still travels through the exhaust, so the sound of the exhaust is also a by-product of what the intake does. Even though the F12 and 812 has very similar cats, resonators and back boxes, they sound quite different, just like the FF vs. Lusso, and the 812 is louder, just like the Lusso is louder than the FF. This is mainly down to the intake resonance and flow. I had a bit of a first for me a few months back, which was a completely straight piped F12 next to a completely straight piped 812. Both had full Novi exhaust with cat deletes and X pipes etc. the works. They were both loud, but yet the 812 was on another level. I'm all for a loud exhaust and have done some pretty weird things, but I will be honest and say that driving an uncorked 812 would make me feel like an entitled *******. That's too much, and while I normally say, "share the joy", this is a situation where I do understand why people might get properly upset. It was loud. and I mean getting into the 138-140 db range loud @ 2 meters or so. I did not have a DB meter with me, but I've done a lot of SPL measuring in my time for concert events and tours etc. so I have a pretty good idea about how it feels once you get into that db range. This was up there, and you can't expect others and your neighbours to be okay with that. in other words - not cool.

I think the 200 cell cats is a great option along with an X pipe and valved back boxes etc. It will make it very loud, and the sound signature will be close to that of a straight piped car, but not so that you become one of those idiots on youtube, revving an Aventador in front of a nightclub just for attention.

 

I think you'll be quite happy with that. You can always add cats if more is needed. Looking forward to seeing your videos.

 

Well put and makes a lot of sense... Thanks for explaining

 

So I went with Klein. I did a cat back with x pipe, straight pipes and boxes: all in inconel. It will take five weeks to receive the system and I’ll report back when installed. I’m very excited and I want to give a big shout out to James at Vivid. He is a consumate professional and his service is second to none. Vivids Black Friday prices made this purchase quite attractive.

 

Could you explain please? You say it's a cat-back system, but also straight piped. A straight piked system is a system with no cats, no resonators, and either switchable mufflers with no restrictions in the open mkde, or no mufflers at all.

 

Sure. In the 812, the x pipe starts after the cats, then comes the straight pipes that link the x pipe with the muffler boxes. With some system you just get an x pipe and the exhaust boxes and you use the oem straight pipes to link the two, but with Klein, they provide their own straight pipe with the x pipe and exhaust boxes.

 

By the way, i misspelled the manufacturer. It's Kline.

 

Both Novitec and Capristo are very solid choices! We are huge fans of both and would not hesitate to install either on any 812. That being said, we opted for the Novitec on our N-Largo 812. This car has the Novitec Valved Exhaust with the Novitec X-Pipe and Novitec Switchtronic to open and close the valves. We also decided it was best to retain the stock cats as Novitec Cat Replacement Pipes are for clients who want max volume.



I'd love to hear some feedback on the system!​

 

I have Capristo valves exhaust on my 812 and just had the Capristo X-pipe installed. Now the car sounds really quiet- the opposite of what we expected. Vacuum lines are pulled so it’s not the valves. Anyone have anything like this happen before?

 

May be a silly question but were the valves open when the lines were disconnected? Also why not use the Capristo Valve Control as opposed to disconnecting the lines.

Only thing I can think of would be valves being permanently closed.

 

Cannot comment on their 812 application , but my Novitec rear boxes on the Lusso are insane on cold start . It makes me laugh every time , though my neighbours don’t find it so amusing . I struggle to hear much difference between valve closed and open though , it’s there but not night and day when warm . Someone needs a remote control to instigate a cold start ! Cannot wait to hear your 812 solution , as standard the 812 is ok , little muted . Nothing like the TDF . So lead the way bro

 

We were thinking the same but the valves are definitely open. The sound difference is actually bigger than the difference between valves open and closed. I think it must just be the nature of the X pipe causing the sound to bounce around instead of go direct like the H pipes. I’m leaning towards ordering Kline 200 cell cats and when they install those remove the X pipe. I’ll drive with the X pipe until the cats come in and see if I’m sure I want to get rid of the X pipe. Gut tells me if you want higher pitch and lower volume X pipe is good. People seem to be saying it mostly helps with low end “drone” but I don’t feel like I have any meaningful drone and it sounds just about perfect with Capristo valved exhaust without the X pipe. Do you guys think the sport cats are worth doing / will it maintain the deeper low end sound and the high pitch high end sound? The X pipe seems to have ruined the low end sound and reduced overall volume considerably.

 

With 100 cell cats I recommend you consider the NR software to address the less back pressure as well as possible CEL...