JDM 2JZ-GTE Runs rough

[sttt11]

I did a JDM 2jz-GTE swap in a MK111 N/A. It has been nothing but problems. The most recent is when started the engine will rev fine for about 8 seconds then will sputter and die if the throttle is pushed. It will continue to idle though. Any thoughts?
There are no mods of any kind. Have installed new coils, igniter, have 2 ecus they both do the same thing, new Map sensor. All the vacuum lines have been replaced. new fuel pump.

 

[bioskyline]

not an expert but id be leaning towards a bad tps. give that a test.

 

[IBoughtASupra]

Can you check codes?

Cam and crank sensor replaced?

TPS adjustment?

With that said, I have started JZ motors without the TPS input and it has very little effect to how it runs. It is a speed density based system so the main load indicator is the MAP sensor. What about the IAT sensor?

What is the voltage reading on your MAP sensor when this is happening?

Check and see if your injectors are in spec.

Before doing any of this, check codes.