JakeG Posted September 27, 2010 Share Posted September 27, 2010 As said I have a flat spot from 4 to 5000rpm, first showed up on a dyno run and has been getting slightly worse and can be really noticed now, any ideas lads what it could be? Supra NA jspec Link to comment Share on other sites More sharing options...
Nic Posted September 27, 2010 Share Posted September 27, 2010 The variable intake manifold valve on the 2JZ-GE should open at around 4000rpm, if this isn't opening it could be causing the symptoms you are experiencing. Link to comment Share on other sites More sharing options...
fastcar Posted September 29, 2010 Share Posted September 29, 2010 The variable intake manifold valve on the 2JZ-GE should open at around 4000rpm, if this isn't opening it could be causing the symptoms you are experiencing. This dude is a minefeild of information Link to comment Share on other sites More sharing options...
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