Mystic RX8 DBW throttle problem at track
This will only happened at track when I track over 2 lap , dbw will jump to limp
Mode
But once I unplug it , is good to go again.

Check time mark 6:24

 

What do you mean by DBW? Power steering? Electronic throttle? Which thing are you plugging/unplugging to fix it?

 

Dbw TB

 

Is the car just going into limp mode? Is there an OBD code?
The throttle is how it enforces limp mode, but it's not the cause. I'd look at your OMP or coolant temp sensor. Errors with either of those will cause limp mode and set a code. Hard to guess without that info.
Since it's happening after a few laps, as heat builds up, I would guess coolant sensor.. but specifically what is wrong with it, hard to say. Get those codes.

 

Err code replate to pcm

P0301-FF
P2004-FF IMRC
P2138-FF

I think I will replace Pedal with another unit

 

Put some Jdm low mileage Pedal and DBW
Use contact cleaner clean ECM
Let see if this fix the problem

 

Seen to fix the problem

 

Based off the NADM vehicle code list, it’s hard to be sure if these match the JDM code list:

P0301 - Front rotor misfire detected

P2004 - Intake manifold APV stuck open

P2138 - Throttle position sensors #3 & #4 voltage correlation problem - likely a throttle pedal issue because the test for this can’t be run if there’s a fault in the throttle pedal assembly, but possibly the throttle body because it houses the TP sensors. Correlates to you replacing them both.
.

 

It will only throw car at In limb mode
With track driving for more then 2 lap around 10min
But yesterday I did around 20min track testing
No issue

 

Pretty much confirm I fix the issue
Today weather over 100F
And car preform nicely for 4-5 laps