rb20 r31 dies after revving (idles fine and no sputter)

[particlewav]

Hey, I have a rb20 w/r33 turbo swapped r31, the car runs, and idles fine with no issues, however whenever its revved to above 4-5k+ rpm when you let off the throttle it goes down to 0 rpm and stops running, it doesnt sputter or make and unusual noises just falls and doesnt recover. If you blip the throttle to catch it when falling its fine and goes back to idling normally. Wondering if anyone can help me out here, I really don't know what I'd be looking for on this. After fiddling with the AAC valve it seemed to fix but when I tried it again a few hours later still was doing it. Perhaps the AAC adjustments didnt do anything and instead once its warm its fine (yet to test this).

Any help appreciated.

[GTSBoy]

Probably need to properly clean the IACV. If it is dirty and sticky it can be slow to catch the idle on the way down from a rev.

[particlewav]

On 08/09/2022 at 2:40 PM, GTSBoy said:

Probably need to properly clean the IACV. If it is dirty and sticky it can be slow to catch the idle on the way down from a rev.

I'll give a good one and update, thanks.

[Duncan]

Do you know if the ECU is standard? If it is flashed or aftermarket it could also be an idle control issue in the tune

[particlewav]

Its got a nistune ecu in it

[joshuaho96]

On 9/7/2022 at 11:01 PM, particlewav said:

Its got a nistune ecu in it

Make sure the TP limit settings are sane for your load scale, I don't really expect it to have been messed with but you never know.

[EndZee]

Broooo have exact same issue. Did you solved it? Please answer