Neo Hunting At Idle

[Simon-S14]

my rb25 saw a large overboost last track day...thanks to a broken wastegate boost line which led to uncontrollable boost and it saw 2.5 bar, not nice lol. anyway the motor survived and mechnically it seems to be ok still. thanks to E85 i would say.

however it now huts on idle luke crazy, between 900-2000 rpm and un and down. i first thought it was the vac leak due to broken gate line but i fixed that and its still there. i checked for all leaks and cant find a thing.

unplugging the AFM to put in in limp home mode makes it hunt faster and worse.

unplugging the idle solenoid stops it.. but its getting the signal from the ecu to vary the idle. so the problem lies somewhere.

any ideas?

[DVS JEZ]

Can u try another idle solenoid valve?

What ecu are u running?

[Simon-S14]

nistune ecu.. i need to get a laptop on there and see if theres any errors or faults coming up.

[R31Nismoid]

due to overboost it hasn't cracked a pipe, hose slightly come loose or otherwise?

[DVS JEZ]

Yep. Connect it up to laptop and see what it says.

if there is no external air leaks, then check the idle motor or the throttle is incorrectly adjusted giving an internal airleak.

[R.3.2.G.T.R]

broken rings? Blown intake gasket perhaps?