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livinlrg05

Member Since 16 Aug 2017
Offline Last Active Today, 12:42 AM
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Posts I've Made

In Topic: Rolling launch how to?

14 February 2021 - 12:46 PM

Excessive EGTs will usually impact (burn or warp) the exhaust valves.

Thanks, Makes sense.


In Topic: Rolling launch how to?

13 February 2021 - 10:06 PM

Quick google search - boost pressure is diverted around the engine (instead of going through it) into the exhaust manifold. It works by delaying the ignition timing very slightly to balance an inherent loss in combustion efficiency with increased pressure at the charging side of the turbo. This is achieved as a small amount of fuel/air mixture escapes through the exhaust valves and combusts in the hot exhaust manifold spooling the turbocharger creating higher usable pressure. Turbochargers are manufactured to extremely fine tolerances and not designed for explosive pressure waves.

Ok, sill not grasping how the valves take the hit. Sounds like the turbo is getting pretty worked just as I stated. Not trying to argue a point but am genuinely curious of the process. Is there something that I'm not taking into account?


In Topic: Rolling launch how to?

13 February 2021 - 12:57 AM

Your valves will like you more ;)

Did not know it was hard on valves, only thought it was hard on turbos because of the retard in timing similar to anti lag... do you have more info?


In Topic: AMS Titanium Exhaust

06 February 2021 - 04:41 PM

Apologies for the thread jack but to answer your Q on the midpipe The material wont make much difference in tone or loudness from the midpipe. The benefit here is weight savings (a few lbs) What matters is if you want resonated or non resonated, Catted or no cats, Diameter plays a role. If 90mm, most mids are bolt connection, if 4" most mids are vband. Choose what fits your application. 


In Topic: why

29 January 2021 - 08:46 PM

LOL! i used to think that too. After owning my Turbo S, i still can't tell a turbo S, targa or carrera from the front.

The 992 has a clear re-design on the lower bumper, but I dont know if even that revamp can signify between the TTS, Targa, Carrera.........LOL!

 

But in all fairness, a Stock 991.2 Turbo S will run well on a FBO GTR - From a dig or from a roll...........

Let's line 'em up. Loser pays for lunch. I have more risk since you like beer so much $$$.