Speciale Exhaust Mod

I've consulted with the mod brothers & sisters and they all say "Yes to Inconel and Yes to Kline!"

Novitech is very good also.

I've re-welded cracked brackets on Capristo exhausts before. Not sure about their 458 exhausts, but usually their exhaust systems are nice sounding.

As far as the cats, I'm not sure why 100 vs. 200 cell cats would produce a gas smell - unless perhaps the mixture at the downstream O2 sensor is throwing off the air fuel ratio at the ECU or something (or just not fully burning something in the exhaust stream). But unless you want the car to be super loud, I would stick with 200 cell as they should flow plenty well enough. I ran 200 cell on my 360 and it was fine. No check engine lights or anything.

Keep in mind that the Speciale exhaust note tends to be more aggressive in nature than the 458's exhaust note. I have heard 458 Speciales with custom exhausts and to me they just sound loud, not better.

As far as material: either SS or Inconel is fine. I'd ask the guys building your exhaust for more into. Inconel has more nickel in the alloy and tends to be superior at higher temps. But stainless is very good too. I just built a full stainless exhaust system for my truck and I used 304SS on most all of it - works just fine But given that you are doing the full exhaust (so I presume headers as well correct?), I'd probably opt for Inconel myself.

Ray

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I researched quite a bit as well for my previous Speciale.... decided upon IPE full system headers back.
Perfect F1 sound




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I came.

 

That sounds INCREDIBLE!

 

Just keep in mind, nothing you do to the V8 will ever really get you the scream you hear from something like the F12 with an exhaust. It's just like with the older 355 motors - install a Tubi and it sounds like an F1 car. With the 458 it's just a lower pitch due to the differences in the motor.

Ray

 

Well, the IPE full system on the Speciale is quite high pitched, similar to the S line exhausts on 458’s and Scuds. I thought it was near perfect F1 sound.
When I traded my S for a TDF, you are Right! 12 cylinders just makes more angels sing.


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just put 100 cell cats on a Stock Speciale exhaust system

 

Looks like a thread for me, I'm quite familiar with Speciale aftermarket exhausts so hope I can help.

When considering what parts of the exhaust system to install and the impacts they will have:

1. Headers: will increase volume slightly. Won't change pitch. Will unlock a lot of power if you decide to tune
2. Cats: will increase volume dramatically if you go less restrictive or decat. Will add a more popping or gurgling noises. Will throw a CEL without a tune (possibility of CEL even with 200cell cats)
3. Muffler: can increase volume noticeably if you go with a system with weaker mufflers. This part will be the primary influencer on the pitch of the 458.

Most people go with a cat + muffler replacement of some sorts. Headers are less common since they are usually over 50% of the cost of the entire system alone.

Brands differ in terms of approach. Some go for pitch, others volume. This has been my observations from all the systems I've heard.

Pitch (highest to low):

1. IPE, S-line, FI
2. Novitec, Kline
3. Capristo
4. Akrapovic
5. Tubi

Volume (high to low):

1. S-Line, Tubi
2. IPE, FI, Capristo, Novitec
3. Kline
4. Akrapovic

Finally, I have a full header-back Kline inconel system with 200 cell cats on my Speciale, along with their valve controller. Been really impressed with it so far. It's louder than stock but not painful. I never received a CEL but do note that some cars will receive them occasionally even with aftermarket cats.

Hope this helps.

 

Those titanium "exhaust pipes" are just short tip extensions thru the bumper, it was an option but has no effect on the sound or power, the actual muffler tubes are a smaller dia than the tip extensions.

 

Congrats.
IPE is the best system.

 

To answer your questions regarding IPE full system....
No smell of gas in cabin at all...behind the car yes, you can smell it. This was with full decat.
In regards to CEL, I would say I’d receive a CEL maybe every couple hundred miles. Simply cleared it with an OBDII scanner (kept one in the car).






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I didn't tune it. But if you want to tune, I suggest getting a tune from a reputable tuner such as DME.

If all you want to do is prevent a CEL, then consider an OBD Wizard from Capristo. It's an OBD device that will clear any emissions related CEL that appears while it is plugged in.

Note that with 200 cell cats, even if you do get a CEL, as long as you have an OBD tool to manually clear it, it shouldn't be too much of a hassle because it will probably be a very long time before it appears again. This is different than decat where it will reappear everytime it reaches enough driving distance to do a proper reading.

You can reduce the chance of a CEL further by using minicat o2 extenders from BigDaddyGarage or Fabspeed.

In regards to IPE, IPE was the most popular Speciale setup. It's the highest pitch, but it loses the lower notes that you will hear from Novitec or Kline (the latter two sound like they play two notes at once, while IPE will scream a single high pitch note, if that makes sense).

Up to you what you feel you would like most.

 

I really wanted that Blue Elettrico Pista. I saw it it GRP last summer and never pulled the trigger. The lack of alcantara on the interior and the rear segment not in CF was an issue. I also had the Blue Sterling leather in my 812. Tyler at LFSC ended up finding me a loaded Rosso Fiorano car just before Christmas that I bought.