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IS F (2008-2014) Discussion topics related to the IS F model

Lexus 4.6 makes 380hp, 5.0 makes 416hp...5.5 liter would make...

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Old 05-19-10, 09:20 PM
  #16  
flipside909
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Originally Posted by lowrideraz
Ya know, you'd expect the F to have a more aggressive ECU, and with the trick Yamaha heads and fancy valves, you'd think the HP per liter would be higher on the F than it is on the LS

Lou
Then the ISF would fall into gas guzzler territory. Toyota and Yamaha made this engine to run optimally. Of course a performance bias over efficiency, but they've done a great job to manage both. You cant do that in an M3 or AMG C63.
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Old 05-21-10, 07:18 PM
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CajunIS250
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what is the torque on these engines?
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