Wasn't the shaft failure due to 'brittle' metal? One owner an engineer had a lot to say previously regarding the Turbo issues her including solutions?
Yes you are correct that was me. My point was it has nothing to do with changing your exhaust or mods or driving like a grandma. It is a poor material design, just because some last longer than others, makes some owners believe they will escape the eventual failure.
Thanks for your reply. Your original comments were extremely informative and shed some light on a little discussed topic!
go back and re-read my post and comprehend what I said... I did not say all I said not many... yours is one of the "not many" but your car was not 100% stock so go fight with someone else as my statement is true. I do not believe the muffler on a 488/F8 does much but it does restrict flow at certain RPM's and exhaust flow is all tied into the turbo's. Changing to a muffler with more flow can cause issues with a turbo by leading to overboost, where the wastegate cannot vent exhaust gases fast enough, causing boost pressure to exceed safe levels. This can result in the turbo overspeeding, potentially leading to power loss if the system is not tuned correctly to compensate, or damage to the turbo and engine over time. The excessive pressure differential can overpower the wastegate and pressure control systems. Potential issues Boost creep: The most common issue is boost creep, where removing exhaust restriction allows the turbo to spin faster than the wastegate can control. Overspeeding: Without enough exhaust restriction, the turbo can overspeed, which can lead to a loss of efficiency or damage to the turbine and compressor. Excessive pressure differential: A large drop in back pressure can create a very large pressure differential across the turbine, which can lead to overboost conditions that overwhelm the wastegate. Engine and turbo damage: If the boost pressure gets too high, it can cause damage to the engine's internal components and the turbocharger itself. Loss of power: In some cases, a less restrictive exhaust system can reduce power, especially if not tuned properly to account for the increased exhaust flow
Seems like Ferrari spec'd the 488 turbo's reliability parts ...looking for the words here... not good enough to withstand how the car could actually be used. Even companies like Pure Turbo's 800 turbo claims no power gains but is more of a reliability package they offer. What I've heard and Id love to really know the parts differences is some claims that the turbo in the Pista is improved over the 488 and the turbo for the F8 were improved. 3 Florida Ferrari dealers have all told me they saw a very minor amount of 488 turbo issues. ( I took this with a large grain of salt lol), most not stock cars, hardly any Pista turbo issues ( I personally know of 1 but that car had cat back oem cats X pipe no valves exhaust and a tune) and no F8 turbo issues. I am sure there have been warranty on F8 turbos somewhere but it is something you just do not hear about. time will tell though.
I hate to be "that guy" but doesn't changing a muffler affect backpressure? Which in turn can make turbos spool faster and quicker, and thus possibly affect longevity as this causes higher turbine speeds and temps?
That would likely depend on how much of the exhaust was changed, full system and decat then yes, rear silencer(s) then most likely not.
In theory yes but none of us know without testing. I ran my 488 for 10k miles with stock exhaust but I pulled the exhaust valve vacuum lines and plugged them so the exhaust was open under 3800 rpm. I am no expert here but my thoughts are most likely not on a 488 but again we do not know, Ferrari would know.
