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Message: <blockquote data-quote="supergripen" data-source="post: 421797" data-attributes="member: 1254">Depends on the application.If its a smallish turbo ie in LPT applications,yes the turbo will run out of breath 3/4 way up the rev range.In high performance turbos ie the Mivec turbo of the Evo9,10 or even Subaru's EJ20 with AVCS,the turbo pushes all the way up the rev range.The limiting factor in these cars are their 4WD drivetrain and the close ratio 6speed box.The FD2R,slightly tuned,will have these cars owned once it hits 5th and in it's iVTEC zone.The Evo and STi tops at 157mph,gearing limited.The FD2R is known to top at 175mph in mildly tuned form.There are so many variables nowadays..RWD turbo,RWD NA,FWD NA,4WD turbo.Twincroll turbos,VGV turbos,LP turbos,big displacement NA,small displacement high revving VVT NA.It just goes on and on...I still think the person behind the steering wheel makes that car tho..</blockquote>