Hondata

thanks for your input EFICU, looks like i managed to accidentally find the workaround over the weekend.
It is somehow AC related, once i turn AC off and then back on it starts to rev normally after few seconds.
I am usually running with AC on auto. Not sure what the root cause of such behavior ...

Atleast 3-4 years, maybe even since tuning bit I didnt notice it right away. Not like i am trying to hold higher revs in neutral on regular basis.
Btw. when car is cold it can hold steady rpm in neutral, problem with bouncing rpms starts when car gets warm.
I tried swapping different intakes ...

Hello,

i am having problem with fast idle. Car drives just fine but i am unable to hold steady rpm in 2-3k rpm range while in neutral.
Because of this issue with fast idle i cannot legally pass emissions test so i want to fix it.
Car was tuned by Vit years ago, so my calibration is password ...