Best options for 812 exhaust (rear boxes)?

You are right, it’s 8 years now. That’s good. I think with the x pipe doing sport cats won’t be too loud. I’ll think about the next move. I wonder if the Novitec X pipe is any different in sound from the Capristo? Doubtful, but just in the back of my mind, though I’ve heard a video of the Novitec x pipe and back boxes only and it sounds good, but softer. I was thinking maybe it was just a video, but unfortunately not the case.

 

The Novi and Capristo X sound very different actually. X-pipes only sound the same if they share the same amount of gas and pulses. The Novi is a different design and sound a bit more raspy where the Capristo is a bit smoother.

 

Interesting. I like the smoother idea, but I wonder if it’s softer because of that. A lot of people say it’s just a pipe, but in my business the smallest difference makes a big change. The ultimate sound for me is in the Novitec GTS video. Just incredible highs and full lows. I was going to try the Novitec x pipe on the GTS when it comes.

 

Nothing could be further from the truth. I understand why as some X-pipes look very similar.

But take a look at these two. Top is Novi and bottom is Capristo. The Novi is basically a 2-1-2 system more than a very traditional X-pipe which seems to use the full tube diameter at the actual crossover. Some systems use two pipes that bend towards each other and just share a bit of the exhaust through am oblong smaller hole etc..

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Completely different designs. The Tubi is more like an OE sound but slightly different and so forth.

 

Interesting. I couldn't tell what Novi had going on since it is heat wrapped, but what you say makes sense. I will likely do the Novi when the GTS comes, and it was my plan all along, but thought I'd save a couple grand in the meantime and do the Capristo. Any volume differences between the two?

 

Not really. You may actually perceive an x pipe alone as a bit more quiet, especially the Capristo.

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That’s why I posted. It is definitely, and disappointingly, more quiet on its own.

 

FWIW I had a Brooke Racing Exhausts x pipe and silencers put on my non GPF '20 SF.

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Even the valved exhaust note is deeper than stock in the low revs. I had an '05 Vanquish S which I took delivery with the valves pinned open so I was looking for that British guttural deep growl.

The Brooke exhaust is absolutely top notch build quality- my installer who is also a Novitec and Capristo dealer was thoroughly impressed. The best thing is that it is inconel and costs less than the others' SS.

First vid you can hear the deeper note at idle and then the valves open. Next two vids are normal driving down my driveway with pinned open OEM valves and with the Brooke. And still screams like a banshee as you go up the revs.



OEM valves pinned open:



Brooke:

 

OEM still seems to have more presence and sound to me. Just as I was saying with the x pipe…agree?

 

Pitch is different.

If you want a higher pitched raspy note- yes. For every day driving the Brooke is more boom-y. You can hear the loudness of a snare drum (OEM) but you feel the sound of a base drum (Brooke).

 

This sounds like the right combination. Thanks for sharing.
Do you have any sound clips or videos?

 

This sounds like the right combination. Thanks for sharing.
Do you have any sound clips or videos?

 

On my Lusso V12, I have a full Kline system with SS 200 cell cats, with SS x-pipe, connected with SS straight pipe to an Inconel Exhaust. Sounds awesome.
So a little mix and match to save a few dollars but worked out well.

 

Has anyone tried 200 cell cats with an x-pipe and stock rear box?


I have a 2022 GTS and looking for the right combination. Stock GTS is too quiet.
I have a Kline full system (SS 200 cell, SS x pipe, inconel exhaust) on my Lusso and it’s a bit on the loud side.
Looking for something in the middle sound wise, but I understand that when I replace the cats, I need a tune so my GTS doesn’t go into limp mode. This happens when GPF is replaced.

 

I was thinking of doing this with the fabspeed set up (200 cell + x-pipe); just had a new baby though so might not get to it for a few months

 

I think Novitec has that worked out. If you buy their 100cell cats, you can get the tectronic for a good price, otherwise it's pricey. Interesting that there are separate GPF related sport cats, as in I can't use ones from the Superfast on the GTS.

 

In terms of volume you'll be pretty much bang on for a usable level of noise with 200-cell cats. The rear silencers do very little to change the volume, they augment HOW the exhaust note sounds rather than boosting volume. Really that just comes down to personal preference, some people love the sound of the stock boxes with high flow cats, some don't!

 

The GTS has a bunch of GPF pressure sensors that need to be connected to the cats, otherwise you get a host of errors that the Tectronic doesn't account for! The non-GPF cats don't have these sensor connections. Pics of Novitec GPF cats


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Thanks for all the info, I currently have a valve controller Novi back boxes and an x pipe but, not the cats, I'm thinking to out I the 200 cell cats but when I called up to order them I was told it would throw a cell after a few months once the cats aged a bit and saw some use, did your car keep passing mot emissions and did it eventually throw a cel after more use?

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Bumping this thread. How are people doing with 200 cell cats and CEL? Fabspeed is the only one that seems to claim no CEL, would it be adviseable to buy their cats and combine it with Novitec x pipe and back boxes for the F1 sound?

 

I recently had Fabspeed 200 Cell Cats and an X pipe on my 812 GTS and not only did they throw codes, my car went into limp mode regularly. I tried 100 different suggestions from them on how to fix the issue, including multiple OBD modules, and nothing solved my problem. Had to pay to have the cats removed and then had to fight to get my money back. In fairness Fabspeed did refund me 100% and then offered to try and square things with me by giving me a discount on other products, which I didn’t take. I’m in the same boat. I recently installed a capristo exhaust and X Pipe but while the note is great, it’s still incredibly muted due to the GPF filters. I’m waiting on 400 cell cats to see if they add enough volume without throwing codes. Fingers crossed because I’m not sure what the point of a powerful V12 GT is without the sound.

 

PS- Would also love any suggestions from the community on how to resolve this issue. I’ve been investigating this with all of the most reputable Motorsport companies around LA for months and no one seems to have a solution

 

Well that’s super discouraging. I hope you find a solution.

 

You cannot get around GPF without tuning the engine emission systems which is a federal crime with jail time. This is not same as tuning the car to make more power. This is why no one does this and you cant find any companies offer a solution. When it comes to 200 Cell cats the old way, in the older cars, you might get lucky but with GPF, you are out of luck sorry. If you do find someone who tunes GPF stuff off, understand that this is a very sensitive area and I’d be careful.