F8 Just arrived yesterday

You can never have enough space. Have to say I Love the new shark blue 992 TTS. I also have a CWM 992 TTS cab and I’m waiting for my F8.

 

Congrats great spec I absolutely love mine over the last year and 2400 miles!

 

Anyone have any experiences with this I’m wondering how much better it can sound. I’m debating either adding this or doing a whole Novitec set up. Obviously they can’t compare but if this can make the car sound better may be an easy fix. Love to hear feedback


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The F8 sounds great on startup …. And then the bypass valves slam shut. As I await delivery of my F8, two things I won’t do is; 1) modify the exhaust in a way that may void the warranty; and 2) spend crazy $ to improve the sound. With those two caveats noted, I may well end up living with a less than pleasing exhaust sound. But ….. I have a few ideas in mind that I’ll try on my car when it arrives (before Christmas I believe) and I will be sure to share the results on this forum.

 

its hard not to drive the car so much

 

Yes the 992 in shark blue is just amazing.. wow; congrats!

 

The F8 uses pneumatic valves same as Pista. The Portofino, Roma, SF90 use electric valves.

steve

 

Hello, did you ever figure out a solution to open the exhaust valve

 

Hi Greg,

I believe that with cars that have GPFs, there is going to be an issue with opening and closing the car's exhaust bypass valves if that overrides what the car's ECU is trying to do ... here is why.

The GPF consists of a ceramic liner placed in the exhaust pipe that will collect very fine, invisible, particulates from the exhaust gases. The GPF is typically placed between the catalytic converter and exhaust silencer although it may be combined with the catalytic converter. Here is an illustration from the Audi Q3:

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With gasoline powered engines, the exhaust gases are generally hot enough to continually burn off the collected particulates and GPF regeneration is normally not required. However, there is a possibility that the GPF could become clogged and, therefore, the car’s ECU will monitor the GPF performance. If it becomes necessary, the vehicle may either perform a regeneration cycle (if one exists) or signal the driver to service the GPF.

The GPF is typically equipped with a pressure differential sensor. The pressure sensor measures the difference in pressure between the inlet and the outlet of the GPF, the difference in pressure corresponding to the degree of saturation inside the filter. The more the filter is clogged, the higher the voltage (in volts) transmitted by the sensor to the ECU. At a specific voltage, corresponding to the quantity of trapped particulates, the ECU will register a Diagnostic Error Code (DTC) and may trigger an events. It may activate a forced regeneration of the GPF by raising the temperature of the exhaust gas. If the regeneration cycle is not successful, or if the car does not have a GPF regeneration cycle, the ECU may trigger the car to go into “limp” mode until the GPF is either manually service or replaced and the error code is cleared.

On Ferrari's equipped with GPFs and exhaust bypass valves, I believe the car's ECU passes a signal to close the bypass valves (momentarily) when the ECU is "measuring" the pressure in the GPFs. If the ECU senses that something is amiss due forcing the valves open at this moment in time, then the ECU may trigger the previously mentioned error code(s) or go into limp mode. My understanding is the car will perform a GPF function check every 7 (or so) start cycles or every few hundred miles. Not sure about this, but suffice it say the check will occur on a regular basis.

What does all this mean for aftermarket exhaust systems and exhaust controllers? It boils down to an incompatibility issue. Already in Europe, the sales of after-market exhaust systems has substantially declined for cars equipped with GPFs. Unless the after-market exhaust manufacturer is able to duplicate how the car's ECU handles these pressure readings, all bets are off. The only solution that I have confidence is an ECU tune or a device that constantly monitors for GPF errors and deletes them on the fly.

GPFs are not required in North America, however several lower volume manufacturers of luxury vehicles (e.g., Ferrari), have elected to equip all their cars made after 2021 with GPFs. If a person wants to delete the GPFs and have an ECU tune, then the Forza controller will work fine. Otherwise, you will probably have to live with car as it is delivered to you.

I want to add a word of advice to new owners of GPF equipped cars, if an after-market exhaust manufacturer tells you that their system can work without causing these errors or that they have an exhaust controller that forces the valves open without causing any error conditions, get that in writing and make sure that they are going to back that claim. I will use an example, Capristo ... a reputable after-market manufacturer of exhaust systems. They sell valved exhausts for the F8 with OPF delete. (OPF is the German term for GPF). They do not indicate that their exhaust controller is compatible with the F8.

Best regards,

Steve