![]() | Home > Technical (L322) > Second Turbo 4.4 TDV8 |
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kevinp Member Since: 28 Sep 2019 Location: Telford Posts: 1315 ![]() ![]() ![]() |
Second turbo doesn't activate untill about 2400rpm so even at 100mph it will still be at idle I would have thought. |
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mjdronfield Member Since: 04 Nov 2011 Location: Derbyshire Posts: 7929 ![]() ![]() ![]() |
It’s not speed, it’s rpm… / engine load / throttle position.
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Rambles Member Since: 16 Apr 2011 Location: UK Posts: 830 ![]() ![]() |
Use the flappy paddles if you want to keep revs up without being so foot heavy … |
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pcourtney Member Since: 14 Jan 2020 Location: Stansted Posts: 922 ![]() ![]() ![]() |
OK, using the paddle gears I got to hear the second turbo, not as much extra oomphhh or noise as I was expecting, but its there sure enough, I also came onto the slip road of the motorway and maintained about 2800rpm for about 60 seconds to see how much smoke out of the back I could see, and nothing there, so that's a good sign |
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mjdronfield Member Since: 04 Nov 2011 Location: Derbyshire Posts: 7929 ![]() ![]() ![]() |
Yes, I try and get mine going at least once every trip.
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JayGee Member Since: 27 Jul 2021 Location: London Posts: 3283 ![]() ![]() ![]() |
On the pre MY12 cars with the old style crossover valve 'regular excercise' is a good idea. The 2nd turbo is smaller than the primary one and just keeps the power going further up the rev range. I don't notice a sudden jump in power or any change in noise and it's all very smoothly integrated. 2012 TDV8 Vogue (L322) |
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Rambles Member Since: 16 Apr 2011 Location: UK Posts: 830 ![]() ![]() |
https://www.automobile-catalog.com/curve/2...#gsc.tab=0
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DrRob Member Since: 16 Apr 2015 Location: Petersfield, Hampshire Posts: 4338 ![]() ![]() ![]() |
Use the second turbo daily when warm to keep the crossover valve working well….
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JayGee Member Since: 27 Jul 2021 Location: London Posts: 3283 ![]() ![]() ![]() |
Be carefull what you class as warm. The oil temp is what it important to get up to temp not the coolant. If you monitor oil temps with your GAP IID tool you will be suprised how long this takes esp on cold days. 2012 TDV8 Vogue (L322) |
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