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Thread: 348 exhausts

  1. #1
    Nosevi's Avatar
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    Default 348 exhausts

    Hi all.

    After reading a few recent threads I've been thinking about a possible exhaust change next year. Love the sound of my Nouvalari Supersport for a blat through the countryside but in all honesty it's a bit raucous for longer journeys. I want to start using the car a bit more and something with a nice sound yet not quite as deafening might be a good plan.

    A valved Capristo might fit the bill - louder when I want it to be but quieter when the situation demands it but does anyone know how good it sounds when open and how much quieter it is when closed? Also, anyone got a clue how much they cost in the UK? There seems to be a massive difference in price between Europe and the US and all I can find in the UK is "Please enquire for price" (which I always find irritating).

    Are there any other valved exhausts out there for the 348?

  2. #2
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    "Yellow compass" on fchat are always advertising deals on capristo exhausts and I did enquire a few years back and the prices seemed pretty good.

    Valved and unvalved capristos are for sale on ebay too but your looking at about 5k for a valved one.

    Have you thought about asking the folk (nouvalari?) who made your existing exhaust how much it would be to add valves to it? The actual valves don't seem that expensive based on example below (not saying it fits etc - just to give you an idea).

    https://www.ebay.co.uk/itm/261031706...IAAMXQjWtRLOyK

    I imagine it's quite a popular mod to meet track noise regs etc - you could do with having a chat with someone in the racing/modding community

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    Quote Originally Posted by irarref View Post
    "Yellow compass" on fchat are always advertising deals on capristo exhausts and I did enquire a few years back and the prices seemed pretty good.

    Valved and unvalved capristos are for sale on ebay too but your looking at about 5k for a valved one.

    Have you thought about asking the folk (nouvalari?) who made your existing exhaust how much it would be to add valves to it? The actual valves don't seem that expensive based on example below (not saying it fits etc - just to give you an idea).

    https://www.ebay.co.uk/itm/261031706...IAAMXQjWtRLOyK

    I imagine it's quite a popular mod to meet track noise regs etc - you could do with having a chat with someone in the racing/modding community
    Would be great if I could valve the exhaust I've got, didn't think of that. The guys who make them are fairly local to me so will have to ask them if it can be done. Good idea, Jeff.

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    Just doing a bit of reading but not sure if I've got this correct - do you need to have a quieter exhaust to start with and the valves just reroute around the sound deadening in the exhaust? So you can't make a loud exhaust quieter using valves, you can only make a quiet exhaust louder? As I say, not sure if I've got that right.

    As an aside it looks like valved Capristos are more like 3000 in Europe.

    https://tuning-wheels-exhaust.com/exhaust/ferrari-348/

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    Quote Originally Posted by Nosevi View Post
    Just doing a bit of reading but not sure if I've got this correct - do you need to have a quieter exhaust to start with and the valves just reroute around the sound deadening in the exhaust? So you can't make a loud exhaust quieter using valves, you can only make a quiet exhaust louder? As I say, not sure if I've got that right.

    As an aside it looks like valved Capristos are more like 3000 in Europe.

    https://tuning-wheels-exhaust.com/exhaust/ferrari-348/
    Bet it would be more in the UK...just because. So worth a little "holiday" to Europe?

    I know its not a direct comparison but as a form of comparison I've got a capristo stage 2 on the 355. Playing with the bypass valve is just addictive, and especially enjoyable when you pass any silly little electric car Yes I'm juvenile!

    As to sound, actually its Ok; louder than the 348 (mines got either a tubi or quicksilver, not sure which). I really don't like loud pipes as they just give me a headache, and cruising on the motorway with the 355 is fine. The boss hasn't even said anything, about the noise, not my driving obviously. So it must be ok!

  6. #6
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    If you look on the link below it says the valved one is equivalent to the sound 3 (noisiest) but with valves to quieten it down

    https://capristoexhaust.com/product-...i/ferrari-348/

    I have a feeling you can fit the valves to any type. If you look the valves its only blocking one set of the pipes not 2 so I assume that set of pipes is the "loud" side

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    Thanks both. I don't think I can legitimise stumping up the sort of amount the Capristo would cost in the States, maybe if it as closer to the cost in Europe I'd give it some thought. I'm in no particular hurry but will give it all some thought.

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    Here is my take on how valved exhausts work... The valves traditionally tap in to a vacuum line within the engine bay. The vacuum line to the valve is equipped with a control module/valve which applies & removes the vacuum supply to the exhaust valve. When the vacuum is applied, the valve is closed and when the vacuum is removed the valve opens via a return spring within the valve assembly.

    So on to the valves themselves and how they effect the flow of exhaust gasses and silencer function. The physical location of the valves within the system is between the cats and silencer. In essence, all they do is divert the exhaust gasses either through the silencer when they are closed resulting in 'quiet mode' or provide a path of least resistance to the second tail pipe on either side of the exhaust system. This in effect removes the silencer function (for the majority of the exhaust gasses). Some gasses will still pass through the silencer as the pipe remains unaffected by the valves, the exhaust gasses will obviously take the path of least resistance though and head straight out the open tail pipe...

    Useful drawings available in the link below to help visualise this.

    https://aldousvoice.com/2012/11/16/c...-to-fit-a-360/

    Your comments around the philosophy of exhaust valves making quiet exhausts loud is correct Pete. It would not be possible to install valves to an existing loud exhaust system and make it quieter without also installing additional silencers in the system.

    Hope this helps

    Edit: The F430 system drawing is the easiest to see the philosophy of the valve. The principal of the 360 system is the same I believe, the re-routing of the exhaust gases takes place within the silencer itself which contains a more complex arrangement of chambers and internal link pipes.
    Last edited by BSM; 12-10-2021 at 06:29 AM.

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    Quote Originally Posted by BSM View Post

    Your comments around the philosophy of exhaust valves making quiet exhausts loud is correct Pete. It would not be possible to install valves to an existing loud exhaust system and make it quieter without also installing additional silencers in the system.

    Hope this helps
    Cheers Ben. Thought it was along these lines but thanks for clarifying. Looks like a new system would be my only option. As I say, love my system for a blast in the countryside but if I want to start using the car for longer trips I'd want something else.

    As an aside, anyone fitted an exhaust to their 348 themselves? Easy? Hard to get to fit? Just bolt on or do you need to seal joins with something? Just wondering how easy switching between them would be if I had 2 systems.

    Actually it'd be 3 systems - still got my original twin can system sat in the garage but it sounds seriously unimpressive to my ear and I really want something between the quiet buzz of the old system and the deafening raw of my SuperSport.

  10. #10
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    I've got a feeling the system for the 348 was not as clever as that. If you look at the pic below the only valves are on the exit pipes AFTER the cans.

    Name:  Capristo Valves.jpg
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    They did used to sell the valves by themselves so they could be fitted to an already existing exhaust plus there was an option to have manual valves ie adjust with a spanner to switch them on or off - see pic from link below.

    https://www.capristo.de/for-348/?lang=en

    NB if you look on the link above then click on the controllers there's a link for the instructions. They can be set up with 2 valves (like on a 348) or 4 valves like ben has described for more modern cars.

    With regard to changing the exhaust its easy....if the original has been change otherwise everything will be rusted together and have to be cut off etc. Took me ages to remove all the bolts on mine but when I changed it I swapped all teh bolts for stainless and now its a 10 min job to remove the exhaust. The bumper doesn't have to be removed for a capristo but cant comment on other makes. Also, youll need the new doughnut gaskets.


    Stainless conversion...

    Name:  IMAG2551.jpg
Views: 45
Size:  60.8 KB

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