2JZGE NA-T Cold Idle low sometimes stall

[2JZNA-T]

Hello, so as the title imply's the car when it starts up idles extremely low and sometimes even stalls if its cold enough.

When the car is warmed up it idles perfect and smooth. I've spent some time with idle ref and trying to adjust accordingly to the coolant temp. Also spent time with after start enrichment and some other things but i always have the same result.

The only problem i have is when its cold so its got to be some sort of correction parameter not in an ideal adjustment ?

Anyways because of this low idle when its cold i usually have lightly hold the gas peddle down just to keep it at around 2k so it warms up. But literally if i try to start the car with out any throttle it will absolutely not start. Its almost like trying to start a carb operated vehicle where you have to give it gas while its cranking.

That has been the only problem i've had so far. I love the way the emu is otherwise. I've been driving the car frequently and love how it drives.

Just needa find out what parameter to adjust so i can have a good solid starting point.

Thank you for your time.

[Jadzwin]

Post your config and log file

[2JZNA-T]

Here is the tune thats on it, my VE tables don't look that great but for the most part the only thing thats not working well is cold idle. Other than that the car drives and feels great.

The log file i believe is there. But not sure. i haven't taken it on a very long drive and having really redlined it yet.

[ihiryu]

Any word on this? WIll be working on a NA-T setup pretty soon.

[WHPZach]

Your idle ref table needs work. Duty cycle needs to increase quite a bit at lower coolant temperatures.

Also, increasing duty cycle to 100% during cranking (under the parameters menu) will help with cold starts.

The main issue is your idle ref table, though. Duty cycle always goes up as coolant temperatures go down.