actual ex vvt varies differently from target
 

Hello guys,

For my JDM 2015 evo x gsr which has stock setting, the actual ex vvt value changes differently from the target ex vvt value.

Below is my ex vvt table of 56870008. It's a stock setting.


https://cimg3.ibsrv.net/gimg/www.evo...2f80f6971b.jpg

And below is the graph at 3rd-gear WOT.

https://cimg7.ibsrv.net/gimg/www.evo...76936defb4.jpg

It seems that in the vicinity of 4500 rpm, the actual ex vvt value is dropped to -3.91 even though the target vvt value is 0.0.

For comparison, below is the graph at 3rd gear WOT of previous owned 2008 evox gsr.

https://cimg1.ibsrv.net/gimg/www.evo...9e1a95fccb.jpg

Although it is natural, the value of actual ex vvt varies according to the value of target ex vvt.

I don't know why it occurs. What could be the cause of this? Where should I modify to fix this problem?

Thanks,