Overrun DownShift Throttle

[ATSUSHI]

 

[Adamw]

No, even if the ECU was able to temporarily disable the fuel cut for a downshift blip it wouldnt work - torque recovery is too slow after a fuel cut to give fast enough response for a blip.  You have to disable overrun fuel cut if you want a downshift blip.

[ATSUSHI]

G4Xのバージョンで、オーバーランダウンシフトスロットル　フューエルカットONでもブリップが出来るようになりましたか？

[Adamw]

Im not sure I understand why you would want over-run fuel cut and downshift blip together?  Typically over-run fuel cut is only used to acheive a very small increase in fuel economy.  If you use downshift blip you will wreck any chance of good fuel economy because you have to dump a big load of extra transient fuel in for every down shift.  If you want good downshift blip then you dont want the extra delay in torque recovery that a fuel cut will cause.  So most people would consider these two functions mutually exclusive or contradicting to each other.   

So what Im saying is we can consider adding the ability to temporarily disable over-run fuel cut to achieve a downshift blip in G4X, if there was a good logical reason to but I dont quite see what is the objective you are trying to achieve.  Doing so will likely give poor downshift blip response and poor fuel ecomony so it kind of wrecks both functions. 

Surely if you have a activation delay of 0.5 or 1.0 for over-run fuel cut it will allow enough time for a downshift?