The Capristo on my Testarossa sounds same as OEM | FerrariChat

The Capristo on my Testarossa sounds same as OEM

Discussion in 'Boxers/TR/M' started by Dkouseller, Nov 18, 2024.

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  1. Dkouseller

    Dkouseller Rookie

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    I installed a Stage 3 Capristo exhaust on my ‘87 TR earlier this year.

    When I got it out of the shop. Both the installer and I was surprised that it really didn’t sound much different than my stock exhaust. I still have the cats installed, but shouldn’t I still hear a noticeable difference between Capristo and stock?
    Curious what others have experienced that have installed that same exhaust. I know it’s a popular one.

    Thank you in advance for any input.
     
  2. ttforcefed

    ttforcefed F1 World Champ Rossa Subscribed

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    that sounds very off. even at high revs?
     
  3. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ Lifetime Rossa

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    If you have both precats and cats still in place (or maybe even precats that have broken up internally and are blocking things up) = yes, it probably will still be pretty muted.
     
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  4. Veedub00

    Veedub00 F1 Veteran Owner Silver Subscribed

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    Gotta see if your precats are partially melted.
     
  5. ferralc

    ferralc Formula 3 Owner

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    I don’t have cats nor precats and I had an Ansa exhaust before and now a Capristo level 3 and the sound is WAAAY louder than the Ansa (and the Ansa was already louder than stock) so yes most likely you have your precats clogged.
     
  6. bernieb

    bernieb Karting

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    You've got the cart before the horse. It will come to life once you get rid of both the cats and pre cats.
     
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  7. Jango

    Jango Rookie

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    I have the electric valved Capristo exhaust, and when fully opened up sound mega and I have cats removed
     
  8. George Vosburgh

    George Vosburgh F1 Rookie Silver Subscribed

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    Along the same conversation, can someone tell me why the Tubi exhausts have a different design for cat and non cat? If you have a California car with a Tubi exhaust can you pull the cats off and find some kind of pipe to take its place?
     
  9. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ Lifetime Rossa

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    Because on a TR there are different length headers for the TR that came "without catalytic converter" and those that came "with catalytic converter".. Look at the two exhaust systems in any? TR SPC -- not only are the headers different, virtually everything else is too.

    On the "with catalytic converter TR", there are F bypass pipe available for replacing the precats (and aftermarket versions), but you'd need something aftermarket to replace the cats -- but you'd still buy the Tubi "for cat".
     
    Last edited: Nov 29, 2024
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  10. Dkouseller

    Dkouseller Rookie

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    Is there a way my mechanic can check that without removing majority of the exhaust system? One of the mechanics out here in Las Vegas told me he would have to remove the cats in order to see the condition of the precast.

    Would it be best to remove both pre-cats and cats? Or just one set? I would like to bring my V12 engine to life, but not make it obnoxiously loud if that makes sense.
     
  11. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ Lifetime Rossa

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    Better to remove the precats so that you can look into the inlet side as well -- however (if you don't need to be strictly legal) they should either be "cleaned out" completely or replaced with precat bypass pipes IMO. (If they are still intact and OK, might be best to get the precat bypass pipes so that a still-intact precat can be sold/preserved.)

    Too loud or not loud enough is subjective, but I preferred an exhaust configuration of bypassed (or cleaned out) preacts + cats + Tubi. In this configuration, the thermocouples need to be moved to the exit side of the cats. Doesn't make sense to me to have intact precats + bypassed cats + Tubi.
     
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  12. MMM

    MMM Rookie

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    My 91 came with a Capristo Exhaust. No way a stock exhaust is that loud. No sneaking out of the Neiborhood in the TR! I have been forbidden to remove it by the wife who loves the gurgle it makes when you de-accelerate.
     
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  13. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ Lifetime Rossa

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    Do you have intact precats and intact cats? My guess would be "no" ;).
     
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  14. turbo-joe

    turbo-joe F1 Veteran

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    loud pipes save lives ;)
     
  15. 66MK

    66MK Karting

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    My UK Testarossa with no cats and a stage 3 Capristo is full on 80's F1 - Ear plugs on a long run - its amazing!! :)
     
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  16. MMM

    MMM Rookie

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    Funny. I don't know. But I am guessing that you are right.
     
  17. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ Lifetime Rossa

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    This is always the problem when talking about, or trying to compare, the sound of the various manufacturers silencers/mufflers on TR -- very dependent on what's between the header exits and the silencer/muffler inlets.
     
  18. ago car nut

    ago car nut F1 Veteran Silver Subscribed

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    Was reported on this forum that pre-cats are bad for performance?
     
  19. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ Lifetime Rossa

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    Any extra obstruction in the exhaust flow path is technically bad for performance, but doubtful that anyone could detect it with their butt-dyno, and, if you were operating in a way that you noticed a performance difference = you'd probably be in jail ;). IMO, one significant downside is the location of "hot" precats being sort of under/next to the powerplant. Of course, if the precat catalytic structure has melted, or broken up, that's a bigger problem (and that does happen). The precats were a (desperate?) afterthought to minimize cold-startup emissions more quickly. When the engine is up to operating temperature, the main cats work just fine.

    (Anyone who has ever used a private jet - even one time -- has released far more "pollution" than a TR without precats will release over its whole lifetime vs a TR with precats.)
     
    Last edited: Dec 1, 2024
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  20. Dkouseller

    Dkouseller Rookie

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    This information is great. I'm having trouble finding a qualified shop here in Las Vegas that is willing to dig in and see if we can clean out/remove the pre-cats. I have a feeling you guys are right and that there is an obstruction or they have melted down.

    Would anybody on here? Have any recommendations for a good shop out here in the Las Vegas area?
     

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