Flames are only the concequence of such technical architecture.. they do not affect the way your engine goes... or at least in games..
I'm sure if PD put flames it will only be for graphical reasons and nothing related to turbo or whatever real technical reason...
Like I said, why not, but It is not something really important for GT...
Before flames, the first graphical improvement to add is at least a rear gear light. Really difficult to explain why GT still do not have this ! That's why I really doubt flames will be in GT4...
I'm sure if PD put flames it will only be for graphical reasons and nothing related to turbo or whatever real technical reason...
Like I said, why not, but It is not something really important for GT...
Before flames, the first graphical improvement to add is at least a rear gear light. Really difficult to explain why GT still do not have this ! That's why I really doubt flames will be in GT4...