The car start and idle fine but it will die when i drive it or rev it pass 4k rpm
2001 is300
aristo motor
aristo ecu
aristo engine harness
aristo air flow meter
5 speed swap as the same time
single turbo kit

i just jump the diagnostic box it give me 2 code 39 and 21. code 21 is main o2 sensor and i have 2 on my car.where is the main o2 sensor ?please help guys

 

The main O2 was directly after the twinturbo outlet. So when you went single where did you reinstall that o2 sensor (if at all)?

You GE motor had 4 o2's, two pre cats and two post cats, the 2 post cats you can leave removed/disconnected as they don't effect how the ecu runs the car. If you used the complete aristo loom and aristo ecu you only need to deal with one sensor.

I also assume your using a VVTI/161 engine and ecu??

Got a pic of your engine bay?

 

thanks for reply 99gs3
the car is running on stock 2jz gte ecu and harness. the main o2 sensor is right behind the turbo
i will post some pix of my engine bay soon